JP2015134138A - Orthodontic wire, method for manufacturing orthodontic wire, orthodontic set, and pliers for manufacturing orthodontic wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an orthodontic wire capable of almost completely preventing tooth root resorption by being used for an orthodontic treatment which enables a three-dimensional tooth body movement, which hardly damages a tissue.SOLUTION: An orthodontic wire 11 includes a first part 11a, a second part 11b, an arch-shaped third part 11c, a fourth part 11d, and a fifth part 11d, and is composed of a stainless steel wire, which is arch-shaped as a whole, having a rectangular cross-sectional shape of (0.41±0.05 mm)×(0.56±0.05 mm). The first and fifth parts are located substantially in a first plane, the second and fourth parts are located substantially in a second plane, and the third part is located substantially in a third plane. The long side of the rectangle in the cross-section of the stainless steel wire is substantially parallel to the first, second, and third planes. The first plane is inclined by 12-25 degrees with respect to the second plane, and the third plane is inclined by 12-25 degrees on the same side as the first plane with respect to the second plane.

Description

  The present invention relates to an orthodontic wire, a method for producing an orthodontic wire, an orthodontic set and a pliers for producing an orthodontic wire, and particularly suitable for orthodontic use when a dentist performs orthodontic treatment. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an orthodontic wire manufacturing pliers suitable for use in manufacturing a wire, an orthodontic set including the orthodontic wire and a bracket.

  In orthodontic treatment, by attaching an orthodontic device such as a bracket to the crown of a tooth, attaching an orthodontic wire with the necessary bend to this orthodontic device, and fixing both ends to a fixing source, It is common to apply a force to the teeth and move them with this orthodontic wire (for example, see Non-Patent Documents 1 and 2).

  About 160 years have passed since modern orthodontic treatment was first performed. In the meantime, various orthodontic materials have been developed, orthodontic theories have been developed, and it is considered that the treatment has been rationalized to some extent. However, it is doubtful that all the contents of orthodontic treatment that are generally performed today have been established as safe and highly rational treatments. In conclusion, the orthodontic treatment that is generally performed at present cannot be considered as a safe and highly rational treatment from a mechanical point of view. Above all, there is no reliable treatment theory that says "this is correct in all", there is no book that can be said to be a 100% reliable manual, and treatment using the theory and easy techniques that each orthodontist believes to be correct. It can be said that the current situation is only doing.

  Originally, orthodontic treatment should be "a treatment that establishes an occlusal relationship by safely moving teeth without causing harm to the tissue in the oral cavity", but even if considered from all directions, it does not harm the tissue. There is no established method to move teeth safely and reliably without giving them.

  Under these circumstances, safe orthodontic treatment is not always available, and it is thought that medical problems such as root resorption, temporomandibular joint symptoms, and occlusion failure occur at a certain probability. .

  Especially for root resorption, there is no noticeable symptom after treatment except in severe cases. At first glance, it seems that the teeth are arranged neatly. Therefore, X-rays should be taken after treatment. This is a very difficult problem to understand. However, depending on the degree of root resorption, it can be a big trouble in the future.

  When treatment is based on the current orthodontic theory, it is an incomplete theory of histological and mechanical balance, so any time root resorption occurs in one third of the root apex It is given up if it cannot be helped, and if the root resorption does not occur, it must be fortunate.

  Even if some root resorption occurs, the tooth itself does not immediately go bad, and many orthodontists consider it unavoidable even if some degree of root resorption occurs. Not all cases cause root resorption, but the mechanisms of many orthodontic techniques that are currently practiced are inevitably considered to cause root resorption with a probability of a few percent. It was.

  However, the root resorption that occurs in orthodontic treatment is actually a big problem. That is, if extreme root resorption occurs, the teeth will be easily removed. In addition, even if you are young (or soon after treatment), it will be easy to come off if you have a periodontal disease in the future and your gums become weak. If this happens, the only way to deal with it is to remove the tooth.

  The mechanism of root absorption will be described in detail. There are several mechanisms of root resorption. There are cases where root resorption occurs congenitally (pathologically), but in fact, there are overwhelmingly cases that are caused artificially by orthodontic treatment. The following two patterns are considered as cases that are caused artificially.

  One is when the correction force is too strong. As a mechanism of orthodontic treatment, the force is always applied to the teeth by a mechanical orthodontic device, but in fact, orthodontic treatment transmits a continuous force from the teeth to the tissue and moves the teeth using some kind of metabolism. It is treatment to let you. However, there is an allowable range for the force to move the teeth, and it will not move properly if the force is too strong or too weak. If this force exceeds the allowable range and is too strong, it will cause root resorption.

  The other is root resorption by jiggling. The tooth movement mechanism includes tooth body movement and inclination movement, and most of the orthodontic treatments currently carried out perform inclination movement in which the tooth is inclined and moved while performing small jiggling or large jiggling. This inclination movement is a major cause of root resorption, and it is considered that most tooth root resorption can be avoided if tooth movement without tilting the tooth becomes possible.

  The reason why perfect tooth movement has not been realized so far will be described. The large wall is due to anatomical tooth structure and mechanical structure. That is, as shown in FIG. 39, the tooth 501 has a crown portion 501a and a root portion 501b planted in the alveolar bone 503 through the periodontal membrane 502. The height ratio of the crown portion 501a and the root portion 501b is about 1: 1.5, but there are individual differences. Since the orthodontic appliance cannot be mounted on the root portion 501b, it is mounted on the crown portion 501a, but what is actually desired to be moved is the root portion 501b. This is exactly the point at which it is impossible to perform mechanically. That is, when the correction force is applied by a normal mechanism, the vicinity of the root apex 1/3 becomes a fulcrum when the tooth root portion 501b moves due to the positional relationship between the force point and the action point. In other words, the root apex 1/3 moves while repeating jiggling. Therefore, when the movement is completed, the teeth 501 are surely damaged.

  Under the background as described above, the present inventor has proposed an orthodontic treatment system (called a three-dimensional light force sliding technique (3D-LST)) based on a new concept (Non-Patent Documents 3 and 4). reference.). In Non-Patent Document 3, a thin wire that does not apply an excessive load during orthodontic treatment is selected, and special bends (two tip back bends and two torque holding bends, 15 ° to 20 °) are provided at four places on the wires. It is described that the tooth body can be moved by attaching a high bend (°), and as a result, treatment can be performed safely and rationally. In Non-Patent Document 4, it is possible to control torque and angulation by using a 022 × 028 inch slot bracket with a main arch of 016 × 022 or 017 × 025 and three-dimensional tooth movement with a thin wire. It is described that there is a certain thing (torque holding bend << 15 to 20 degrees >>) and tip back high bend << 15 to 20 degrees >>. However, “torque holding bend” described in Non-Patent Documents 3 and 4 is a term coined by the present inventor, and does not describe the meaning of torque holding bend. Wherein tip back bend and torque holding bend are located on the wire. There is no description about whether to add or not.

William R. Proffit (translated by Kenji Takada) "The new edition of Profito's modern orthodontics" (Quintessence Publishing Co., Ltd., issued on June 10, 2004) Haruo Ishikawa and Masatada Koga “Pre-Adjusted Bracket System Straight Wire Technique” (Quintessence Publishing Co., Ltd., published on January 25, 1997) [Searched on November 21, 2013], Internet <URL: http://www.cat-ortho.jp/treatment/categories/t01.html> [Search on November 21, 2013] Internet <URL: http://www.japos.jp/purpose/index.html>

  As described above, in conventional orthodontic treatment, it is inevitable that tooth root resorption occurs because teeth are generally inclined (jiggling).

  Therefore, the problem to be solved by the present invention is that, by using it for orthodontic treatment, three-dimensional tooth movement can be achieved, so that root resorption can be almost completely prevented and the tissue An orthodontic wire that hardly causes damage and an orthodontic set including the orthodontic wire and a bracket are provided.

  Another problem to be solved by the present invention is to provide a method of manufacturing an orthodontic wire that can easily manufacture the orthodontic wire.

  Still another problem to be solved by the present invention is to provide a pliers for producing orthodontic wires that can easily produce the orthodontic wires described above.

  As a result of thorough research on the mechanism of root resorption in a situation where root resorption is considered to occur in many conventional orthodontic treatments, the present inventor has obtained a thin bend with a special bend at a specific position. By using an orthodontic wire, it can be moved linearly and three-dimensionally, that is, in a translational direction in the direction in which the root (or tooth axis) of the anterior tooth is to be moved, using an appropriate correction force that is not too strong. And came up with the present invention. It has been confirmed in many cases that root resorption is not caused by orthodontic treatment due to the realization of such tooth movement.

That is, in order to solve the above problems, the present invention provides:
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third portion is an orthodontic wire having a length that can be stretched over the entire upper teeth of the patient's upper or lower jaw.

  This orthodontic wire is suitable for use in orthodontic treatment by extracting the first premolar. That is, this orthodontic wire has a first portion with respect to the second portion and the fourth portion in the state where the left and right first premolars are extracted in advance when performing orthodontic treatment of the patient's upper teeth. With the third and fifth parts facing up, the first part is attached to the front face of the left first molar crown and the second part is the left front face of the second premolar The third part is attached to the front of the left and right central incisors, side incisors and canines, and the fourth part is attached to the front of the right second premolar crown The fifth portion is attached to the front surface of the right crown portion of the first molar. Further, when orthodontic treatment of the lower jaw teeth of the patient is performed, the first part, the third part, and the fifth part are compared with the second part and the fourth part in a state where the left and right first premolars are extracted in advance. With the part down, the first part is attached to the front of the right first molar crown, the second part is attached to the front of the right second premolar crown, and the third part Is attached to the front of the left and right central incisors, side incisors and canines, the fourth part is attached to the front of the left second premolar crown, and the fifth part is on the left Attached to the front surface of the crown of the first molar. In addition, this orthodontic wire can, for example, extract the left first premolar and the right second premolar or vice versa, for example, extract the left second premolar. In addition, the right first premolar can be extracted and used for orthodontic treatment, and is particularly suitable for use when moving the front teeth backward (lowering). Specifically, this orthodontic wire is used when, for example, the left first premolar is extracted and the right second premolar is extracted when performing orthodontic treatment of the patient's upper teeth. The first part is mounted on the front surface of the left first molar crown with the first part, the third part and the fifth part facing up with respect to the second part and the fourth part. Is mounted on the front of the crown of the left second premolar, the third is mounted on the front of the left and right central incisors, side incisors and canines, and the fourth is on the right The first premolar tooth is attached to the front surface of the crown portion, and the fifth portion is attached to the right front surface of the first molar tooth crown portion. Alternatively, the orthodontic wire has a first part, a third part, and a second part and a fourth part in a state where the left second premolar is extracted in advance and the right first premolar is extracted. With the fifth part up, the first part is attached to the front face of the left first molar crown, the second part is attached to the front face of the left first premolar tooth, Three parts are attached to the front of the left and right central incisors, side incisors and canines, the fourth part is attached to the front of the right second premolar crown, and the fifth part It is attached to the front surface of the right crown of the first molar. In addition, when performing orthodontic treatment of the patient's lower teeth, this orthodontic wire is used in the state where, for example, the left first premolar is extracted in advance and the right second premolar is extracted. With the first part, the third part and the fifth part down with respect to the part and the fourth part, the first part is mounted on the front surface of the right first molar crown and the second part is on the right side. Attached to the front of the crown of the first premolar, a third part attached to the front of the left and right central incisors, side incisors and canines, and a fourth part to the left second small A fifth portion is attached to the front surface of the crown portion of the first molar on the left side. Alternatively, the orthodontic wire has a first part, a third part, and a second part and a fourth part in a state where the left second premolar is extracted in advance and the right first premolar is extracted. With the fifth part down, the first part is attached to the front face of the right first molar crown, the second part is attached to the front face of the right second premolar, Three parts are attached to the front of the left and right central incisors, side incisors and canines, the fourth part is attached to the front of the left first premolar crown, and the fifth part It is attached to the front surface of the left first molar crown.

  When a stainless steel wire is used for the orthodontic wire, the rectangular dimension of the cross section is within the range of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) as required. To be elected. If the cross-sectional rectangular dimension is a stainless steel wire within the range of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm), the second plane of the first plane is required as necessary. By adjusting the inclination angle and the inclination angle of the third plane with respect to the second plane, the same effect as when a stainless steel wire having a rectangular cross section of 0.41 mm × 0.56 mm is used can be obtained. Is possible. In addition, as long as the orthodontic wire has the same mechanical properties (Young's modulus, torsional rigidity, etc.) as the stainless steel wire, a wire made of a material other than stainless steel may be used. Depending on the material of the wire, the cross-sectional shape of the stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) and the similarity ratio 1: p ( However, it should have a cross-sectional shape similar to 0.9 ≦ p ≦ 1.1). In this way, even if a wire made of a material other than stainless steel is used, the first plane can be crossed by adjusting the tilt angle of the first plane with respect to the second plane or the third plane with respect to the second plane. It is possible to obtain the same effect as when a stainless steel wire having a surface rectangular dimension of 0.41 mm × 0.56 mm is used. Examples of materials other than stainless steel include various metals other than stainless steel (single metals and alloys), various fiber reinforced plastics (FRP), composite metal materials of two or more metals, metals and other materials, such as A composite material with a fiber reinforced plastic or the like can be used. Examples of metals other than stainless steel include nickel. Examples of the fiber reinforced plastic include carbon fiber reinforced plastic, silicon carbide fiber reinforced plastic, and glass fiber reinforced plastic. A wire made of a material other than stainless steel is not only a wire made of a uniform material but also, for example, a core material made of metal and a coating layer made of metal or fiber reinforced plastic covering the core material. Also good. Preferably, a stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.02 mm) × (0.56 ± 0.02 mm) or a cross-sectional shape of this stainless steel wire and a similarity ratio of 1: A wire made of a material other than stainless steel having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1) is used, and the most typical example is 0.41 mm × 0.56 mm. A stainless steel wire having a rectangular cross-sectional shape of (0.016 ″ × 0.022 ″) is used. By using a thin stainless steel wire or a wire made of a material other than stainless steel as described above, an appropriate correction force that is not too strong can be applied to the teeth, and therefore root absorption can be effectively prevented. Specifically, for example, when this orthodontic wire is attached, a force of 100 ± 30 g weight is applied to the central incisor on both sides of the patient's upper or lower jaw in the direction perpendicular to the third plane. Similarly, a force of 200 ± 50 g weight can be applied to the side incisor of this side, and a force of 250 ± 50 g weight can also be applied to the canine teeth on both sides.

  This orthodontic wire is typically manufactured by bending four portions of a single stainless steel wire or a wire made of a material other than stainless steel. That is, a first part, a second part, a third part, a fourth part, and a fifth part are formed by bending four portions of a single stainless steel wire or a wire made of a material other than stainless steel. . In this orthodontic wire, the bent part of the boundary between the first part and the second part and the bent part of the boundary between the fifth part and the fourth part are inclined the left and right first molars to the distal side, That is, it is for preventing tip tilt and tipping to the mesial position, and hereinafter referred to as a tip back bend part. Also, the bent part of the boundary between the second part and the third part and the bent part of the boundary between the fourth part and the third part are when this orthodontic wire is attached to the upper or lower teeth using a bracket. In addition, a torque in the direction of rotation that causes the front teeth to tilt toward the labial side is applied, and when the orthodontic wire is locked in the slot of the bracket attached to the front teeth as described later, the torque at that time is maintained. In the following, it is referred to as a torque holding bend section. The inclination angle of the first plane with respect to the second plane and the inclination angle of the third plane with respect to the second plane is within a range of 12 ° or more and 25 ° or less, depending on the material of the wire used and the rectangular dimensions of the cross section, etc. Although suitably selected, it is preferably 12 ° to 23 °, typically 15 ° to 22 °, for example 20 °.

  Typically, the orthodontic wire bisects the third portion and is generally symmetric with respect to a plane perpendicular to the second plane. Also, when this orthodontic wire is attached to a bracket attached to the front surface of the crown of the patient's maxillary or mandibular anterior teeth, one longitudinal ridge of the orthodontic wire is typically bracketed. A point contact or a line contact is made on the bottom surface of the slot, and ridges on both sides sandwiching the ridge make a point contact or a line contact with both side surfaces of the bracket slot. As a result, the frictional force acting between the orthodontic wire and the bracket can be made extremely small, so that the tooth body can be moved even with a small orthodontic force, and the burden on the patient's teeth can be greatly reduced. Become. The cross-sectional shape of the slot of the bracket is generally rectangular.

In addition, this invention
An orthodontic set comprising an orthodontic wire and a bracket for attaching the orthodontic wire,
The orthodontic wire is
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third part has a length that can be stretched over the entire front teeth of the patient's upper or lower jaw,
The bracket is
An orthodontic set comprising a slot having a rectangular cross-sectional shape having a width of 0.56 ± 0.05 mm or a slot having a rectangular cross-sectional shape having a width of (0.56 ± 0.05 mm) × p It is.

  By using this orthodontic set, the effect of performing orthodontic treatment using the orthodontic wire according to the present invention can be most reliably obtained. In this orthodontic set, the orthodontic wire is preferably a stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.02 mm) × (0.56 ± 0.02 mm) or It has a cross-sectional shape similar to the cross-sectional shape of a stainless steel wire with a similarity ratio of 1: p, and is made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire. The plane is inclined at 15 ° or more and 22 ° or less with respect to the second plane, the third plane is inclined at 15 ° or more and 22 ° or less on the same side as the first plane with respect to the second plane, and the bracket has a width of 0.56. It has a slot having a rectangular cross-sectional shape of ± 0.02 mm or (0.56 ± 0.02 mm) × p.

In addition, this invention
By bending four locations of a single stainless steel wire or a wire made of a material other than stainless steel,
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third part is a method of manufacturing an orthodontic wire having a length that can be stretched over the entire upper teeth of the patient's upper or lower jaw.

  In the invention of the method of manufacturing the orthodontic wire, what has been described in relation to the invention of the orthodontic wire is valid.

In addition, this invention
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined by 7 ° or more and 20 ° or less with respect to the second plane,
The third plane is inclined by 7 ° or more and 20 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third portion is an orthodontic wire having a length that can be stretched over the entire upper teeth of the patient's upper or lower jaw.

  This orthodontic wire is suitable for use in orthodontic treatment by extracting the second premolar. That is, this orthodontic wire has a first portion with respect to the second portion and the fourth portion in the state where the left and right second premolars are extracted in advance when performing orthodontic treatment of the patient's upper teeth. With the third and fifth parts facing up, the first part is attached to the front face of the left first molar crown and the second part is the left front face of the first premolar The third part is attached to the front of the left and right central incisors, side incisors and canines, and the fourth part is attached to the front of the right first premolar crown The fifth portion is attached to the front surface of the right crown portion of the first molar. Further, when orthodontic treatment of the lower jaw teeth of the patient is performed, the first part, the third part, and the fifth part with respect to the second part and the fourth part in the state where the left and right second premolars are extracted in advance. With the part down, the first part is attached to the front of the right first molar crown, the second part is attached to the front of the right first premolar crown, and the third part Is attached to the front of the left and right central incisors, side incisors and canines, the fourth part is attached to the front of the left first premolar crown, and the fifth part is on the left Attached to the front surface of the crown of the first molar. In addition, this orthodontic wire can, for example, extract the left first premolar and the right second premolar or vice versa, for example, extract the left second premolar. In addition, the right first premolar can be extracted and used for orthodontic treatment, and is particularly suitable for moving the first premolar to the mesial position. The specific method of using the orthodontic wire in this case is the same as the above-described method of using the orthodontic wire that is suitable for use in orthodontic treatment by extracting the first premolar.

  When a stainless steel wire is used for the orthodontic wire, the rectangular dimension of the cross section is within the range of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) as required. Chosen. If the cross-sectional rectangular dimension is a stainless steel wire within the range of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm), the second plane of the first plane can be used as necessary. By adjusting the inclination angle and the inclination angle of the third plane relative to the second plane, the same effect as when a stainless steel wire having a rectangular cross section of 0.43 mm × 0.64 mm is used can be obtained. Is possible. In addition, as long as the orthodontic wire has the same mechanical properties (Young's modulus, torsional rigidity, etc.) as the stainless steel wire, a wire made of a material other than stainless steel may be used. Depending on the wire material, (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) rectangular cross-sectional shape of stainless steel wire and similarity ratio 1: p ( However, it should have a cross-sectional shape similar to 0.9 ≦ p ≦ 1.1). In this way, even if a wire made of a material other than stainless steel is used, the first plane can be crossed by adjusting the tilt angle of the first plane with respect to the second plane or the third plane with respect to the second plane. It is possible to obtain the same effect as when a stainless steel wire having a surface rectangular dimension of 0.43 mm × 0.64 mm is used. Preferably, a stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.02 mm) × (0.64 ± 0.02 mm) or a similarity ratio with the cross-sectional shape of this stainless steel wire is 1: A wire made of a material other than stainless steel having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1) is used. The most typical example is 0.43 mm × 0.64 mm. A stainless steel wire having a rectangular cross-sectional shape of (0.017 ″ × 0.025 ″) is used.

  The inclination angle of the first plane with respect to the second plane and the inclination angle of the third plane with respect to the second plane is within a range of 7 ° or more and 20 ° or less, depending on the material of the wire used, the rectangular dimensions of the cross section, etc. Although it is appropriately selected, it is preferably 8 ° or more and 18 ° or less, typically 10 ° or more and 17 ° or less, for example, 15 °.

  Except for the above, the orthodontic wire has been described in relation to the orthodontic wire, which is suitable for application when the first premolar is extracted and orthodontic, as long as it is not contrary to its nature. That is true.

In addition, this invention
A first arm having a jaw on the front end and a grip on the rear end;
A second arm having a jaw part at the front end and a grip handle on the rear end side;
The first arm and the second arm are connected to each other in an X shape by a connecting shaft so as to be rotatable around the connecting shaft,
On the surface of the jaw portion of the first arm facing the jaw portion of the second arm, a triangular columnar convex portion extending in the direction along the first arm is provided,
A triangular prism-shaped recess extending in a direction along the second arm is provided on a surface of the jaw of the second arm facing the jaw of the first arm,
The apex angle of the triangle in the cross section perpendicular to the longitudinal direction of the convex portion of the jaw portion of the first arm is 155 ° or more and 173 ° or less,
The apex angle of the triangle in the cross section perpendicular to the longitudinal direction of the concave portion of the jaw portion of the second arm is 155 ° or more and 173 ° or less,
When the first arm and the second arm are rotated around the connecting shaft to close the jaw portion of the first arm and the jaw portion of the second arm, the jaw of the first arm An orthodontic wire manufacturing pliers, wherein the convex part of the part and the concave part of the jaw part of the second arm are fitted together.

  Here, the length of the convex part of the jaw part of the first arm and the concave part of the jaw part of the second arm is determined so that one or more wires can be bent between them. It is done.

  According to the orthodontic wire according to the present invention, it is attached using brackets attached to the maxillary anterior teeth or the mandibular anterior teeth and the bondable tubes attached to the left and right first molars, and an appropriate correction force is applied to these brackets The power chain selected in consideration is hooked while being stretched, and both ends of the power chain are fixed to the bondable tubes attached to the left and right first molars. If the state is maintained for a certain period of time, the orthodontic orthodontic force perpendicular to the third plane and generated by the third portion being bent downward or upward around the torque holding bend and the orthodontic Fixing both ends of the wire to the left and right first molars, and the combined force with the almost horizontal correction force generated by attaching the power chain, the left and right central incisors, side incisors and Work against canine teeth. As a result, these teeth are three-dimensionally aligned so that the roots of these teeth are aligned towards a temporary point that is ultimately set as the intersection of the extension lines of the central axes (or tooth axes) of the roots of these teeth. Tooth body can be moved. At this time, since jigging is not performed, root resorption can be effectively prevented. In addition, the bend angle of the torque holding bend portion is 12 ° to 25 ° for an orthodontic wire suitable for orthodontic treatment by extracting the first premolar, and the second premolar is extracted. An orthodontic wire suitable for use in orthodontic treatment has a large orthodontic wire of 7 ° or more and 20 ° or less, so that the thickness of the orthodontic wire can be small. Can be obtained, thereby minimizing tissue damage during correction. Moreover, according to the manufacturing method of the orthodontic wire by this invention, said orthodontic wire can be easily manufactured by a bending process. Furthermore, according to the pliers for producing orthodontic wires according to the present invention, the wire can be easily bent, whereby the orthodontic wires can be easily produced.

It is a top view, a right side view, a left side view, a front view, and an enlarged sectional view showing an orthodontic wire according to an embodiment of the present invention. It is a basic diagram which shows the 1st example of the manufacturing method of the orthodontic wire by one embodiment of this invention. It is a basic diagram which shows the 2nd example of the manufacturing method of the orthodontic wire by one embodiment of this invention. It is a side view which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is a perspective view which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is a perspective view which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is a side view which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is a front view which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is sectional drawing which shows the pliers for orthodontic wire manufacture suitable for manufacture of the orthodontic wire by one Embodiment of this invention. It is a perspective view which shows the method of manufacturing the orthodontic wire by one Embodiment of this invention using the pliers for orthodontic wire manufacture. It is a perspective view which shows the method of manufacturing the orthodontic wire by one Embodiment of this invention using the pliers for orthodontic wire manufacture. It is sectional drawing which shows the method of manufacturing the orthodontic wire by one Embodiment of this invention using the pliers for orthodontic wire manufacture. It is a top view which shows the state which attached the orthodontic wire with the bracket to the upper jaw tooth and the lower jaw tooth. It is a perspective view which shows the state which attached the orthodontic wire with the bracket to the upper jaw tooth and the lower jaw tooth. It is a perspective view which shows an example of the bracket used for an upper jaw tooth, and a bondable tube. It is a perspective view which shows the state by which the orthodontic wire was attached to the upper jaw tooth with the bracket. It is a perspective view which shows the state by which the orthodontic wire was attached to the lower jaw tooth with the bracket. It is the expanded view which shows the state by which the orthodontic wire was attached with the bracket with which the upper jaw tooth was mounted | worn, and a cross-sectional view of each part of the orthodontic wire. It is a basic diagram which expands and shows the part from the maxillary right first premolar of the orthodontic wire shown in FIG. 18A to the maxillary right canine. It is a top view of the orthodontic wire of the state attached to the bracket with which the upper jaw tooth was mounted | worn. It is sectional drawing which shows the orthodontic wire passed through the bracket with which the maxillary right middle incisor was mounted | worn, and the slot of this bracket. It is sectional drawing which shows the orthodontic wire passed through the bracket with which the maxillary right side incisor was mounted | worn, and the slot of this bracket. It is sectional drawing which shows the orthodontic wire passed through the bracket with which the upper right canine was mounted | worn, and the slot of this bracket. It is sectional drawing which shows the bracket with which the maxillary right first premolar was mounted | worn, and the orthodontic wire passed through the slot of this bracket. It is a basic diagram for demonstrating the tooth body movement enabled by the orthodontic wire by one embodiment of this invention. It is a basic diagram which shows the specific example of the usage method of the orthodontic wire by one embodiment of this invention. It is a basic diagram which shows the other specific example of the usage method of the orthodontic wire by one embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph which shows the photograph which image | photographed the orthodontic wire and power chain shown in FIG. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph for demonstrating an example which actually performed orthodontic treatment using the orthodontic wire by one Embodiment of this invention. It is a drawing substitute photograph which shows the panoramic X-ray photograph before the treatment start of the patient who actually performed the orthodontic treatment using the orthodontic wire according to the embodiment of the present invention. It is a drawing substitute photograph which shows the panoramic X-ray photograph after the completion of the treatment of the patient who actually performed the orthodontic treatment using the orthodontic wire according to the embodiment of the present invention. It is an approximate line figure for explaining the mechanism in which root resorption occurs by conventional orthodontic treatment.

  Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described. The description will be given in the following order.

[Orthodontic wire]
[Method of manufacturing orthodontic wire]
[Pliers for manufacturing orthodontic wires]
[How to use pliers for manufacturing orthodontic wires]
[How to use orthodontic wires]

[Orthodontic wire]
First, an orthodontic wire according to an embodiment used in orthodontic treatment will be described.

  1A to 1D show the orthodontic wire 11. 1A is a plan view, FIG. 1B is a right side view, FIG. 1C is a left side view, and FIG. 1D is a front view.

As shown in FIGS. 1A to 1D, the orthodontic wire 11 includes a substantially straight first portion 11a, a substantially straight second portion 11b, and a central arch-shaped third portion from one end to the other end. 11c, a substantially straight fourth portion 11d and a substantially straight fifth portion 11e, and is made of an overall arched metal wire having a rectangular cross-sectional shape. The length of the short side of the rectangular cross section of the metal wire is a, and the length of the long side is b (b> a). The cross-sectional shape along the EE line of the first portion 11a shown in FIG. 1A is shown in FIG. 1E. In the orthodontic wire 11 suitable for orthodontic treatment by extracting the first premolar, this metal wire is a × b = (0.41 ± 0.05 mm) × (0.56). ± 0.05 mm) stainless steel wire or a cross-sectional shape similar to the cross-sectional shape of this stainless steel wire at a similarity ratio of 1: p (where 0.9 ≦ p ≦ 1.1). It consists of a wire made of a metal other than stainless steel having the same mechanical properties as a stainless steel wire. On the other hand, in the orthodontic wire 11 that is suitable for orthodontic treatment by extracting the second premolar, this metal wire is a × b = (0.43 ± 0.05 mm) × (0 .64 ± 0.05 mm) or a cross-sectional shape similar to the cross-sectional shape of this stainless steel wire with a similarity ratio of 1: p (where 0.9 ≦ p ≦ 1.1) The wire is made of a metal other than stainless steel having the same mechanical properties as the stainless steel wire. Here, the first portion 11a and the fifth portion 11e are substantially located in the first plane, the second portion 11b and the fourth portion 11d are substantially located in the second plane, and the third portion 11c is substantially in the third plane. Located in. The long side of the rectangular cross section of the metal wire is substantially parallel to the first plane, the second plane, and the third plane. In this case, the first plane on which the first portion 11a and the fifth portion 11e are located is inclined at an angle θ ₁ with respect to the second plane on which the second portion 11b and the fourth portion 11d are located. The third plane on which the third portion 11c is located is the same side as the first plane on which the first portion 11a and the fifth portion 11e are located with respect to the second plane on which the second portion 11b and the fourth portion 11d are located. It is the angle theta ₂ inclined. In an orthodontic wire 11 suitable for use in orthodontic treatment by extracting the first premolar, θ ₁ and θ ₂ are 12 ° or more and 25 ° or less, and typically 15 ° or more and 22 °. For example, 20 ° or less. Typically, θ ₁ = θ ₂ , but is not limited to this. On the other hand, in the orthodontic wire 11 suitable for use in orthodontic treatment by extracting the second premolar, θ ₁ is 7 ° or more and 20 ° or less, and typically 10 ° or more and 17 °. Hereinafter, it is, for example, 15 °. Typically, θ ₁ = θ ₂ , but is not limited to this. If necessary, it may be different from each other and theta ₁ of theta ₁ and the right half of the left half of the orthodontic wire 11, may be different from the _second left half theta and theta ₂ of the right half from each other . The first portion 11a has a length L ₁ which can be passed tension in the first molar of the left or right side of the upper or lower jaw of patients undergoing orthodontic treatment. The second portion 11b has a length L ₂ that can be passed tension to the left or right side of the first premolar and the second premolar. The third portion 11c has a length L ₃ that can be passed tension across the front teeth. The fourth portion 11d has a length L ₄ which can be passed tension to the first premolars and the second premolars of the left or right. The fifth portion 11e has a length L ₅ that can be passed tension to the left or right side of the first molar. L _{1 to} L ₅ are appropriately selected according to the patient performing orthodontic treatment. To give specific examples, the length L ₁ of the first portion 11a and the length L ₅ of the fifth portion 11e are, for example, 5 mm or more. 18mm or less, the length L ₄ of length L ₂ and the fourth portion 11e of the second portion 11b is, for example, 7mm or 20mm or less, the length L ₃ of the third portion 11c is less than 80mm for example 40mm or more. The bent portion at the boundary between the first portion 11a and the second portion 11b is the tip back bend portion B _TB , and the bent portion at the boundary between the second portion 11b and the third portion 11c is the torque holding bend portion B _TH . Similarly, the bent portion at the boundary between the fifth portion 11e and the fourth portion 11d is the tip back bend portion B _TB , and the bent portion at the boundary between the fourth portion 11d and the third portion 11c is the torque holding bend portion B _TH . .

  The metal wire having a rectangular cross-sectional shape constituting the orthodontic wire 11 is most preferably used when the orthodontic wire 11 extracts the first premolar and performs orthodontics. If it is, the stainless steel wire having a rectangular cross section of a × b = 0.016 ″ × 0.022 ″ (0.41 mm × 0.56 mm), the orthodontic wire 11 is the second. When it is suitable for use in orthodontic treatment by extracting premolars, a rectangular cross of a × b = 0.177 ″ × 0.025 ″ (0.43 mm × 0.64 mm) A stainless steel wire having a surface shape is used, but is not limited thereto.

[Method of manufacturing orthodontic wire]
A first example of a method for manufacturing the orthodontic wire 11 will be described.
As shown in FIG. 2A, a metal wire 20 having the same rectangular cross-sectional shape as the orthodontic wire 11 and curved in an arch shape in advance is prepared.

Next, as shown in FIG. 2B, the metal wire 20 is bent at an angle θ _{1 in a} direction perpendicular to the long side of the rectangle of the cross section of the metal wire 20 at a point A having a length L ₁ from one end, 11a is formed.

Next, as shown in FIG. 2C, the metal wire 20 is bent at the angle θ ₂ in the same manner from the point A to the point B of the length L ₂ to form the second portion 11b.

Next, as shown in FIG. 2D, similarly, the metal wire 20 is bent at an angle θ ₁ from the other end at a point C of a length L ₅ to form a fifth portion 11e.

Next, as shown in FIG. 2E, the metal wire 20 is bent at the angle θ ₂ in the same manner from the point C to the point D having the length L ₄ to form the fourth portion 11d. A portion between the second portion 11b and the fourth portion 11d of the metal wire 20 becomes a third portion 11c.

  Thus, as shown in FIG. 2F, the intended orthodontic wire 11 is manufactured.

  The 2nd example of the manufacturing method of this orthodontic wire 11 is demonstrated.

  As shown in FIG. 3A, a straight metal wire 20 having a length corresponding to the entire length of the orthodontic wire 11 and having the same rectangular cross-sectional shape as the orthodontic wire 11 is prepared.

Next, as shown in FIG. 3B, the metal wire 20 is bent at an angle θ _{1 in a} direction perpendicular to the long side of the rectangle of the cross section of the metal wire 20 at a point A having a length L ₁ from one end. 11a is formed.

Next, as shown in FIG. 3C, the metal wire 20 is bent at the angle θ ₂ in the same manner from the point A to the point B of the length L ₂ to form the second portion 11 b.

Next, as shown in FIG. 3D, in the same manner, the metal wire 20 is bent from the other end by an angle θ ₁ at a point of a length L ₅ to form a fifth portion 11 e, and further from that point, a length L ₄ The fourth portion 11d is formed by bending the angle θ ₂ at this point. A portion between the second portion 11b and the fourth portion 11d of the metal wire 20 becomes a third portion 11c.

  Next, as shown in FIG. 3E, the entire metal wire 20 bent in four places is bent in an arch shape.

  Thus, the intended orthodontic wire 11 is manufactured.

  A third example of the method for producing the orthodontic wire 11 will be described.

  In this manufacturing method, the straight metal wire 20 is bent in an arch shape, and then bent at four points A, B, C, and D in the same manner as the manufacturing method shown in FIGS. Thus, the orthodontic wire 11 is manufactured.

  A fourth example of the method for manufacturing the orthodontic wire 11 will be described.

  In this manufacturing method, an arch-shaped or linear metal wire 20 is prepared, and the metal wire 20 is press-molded using a predetermined mold, whereby four points of points A, B, C, and D are provided. The orthodontic wire 11 is manufactured by bending at once.

[Pliers for manufacturing orthodontic wires]
An orthodontic wire manufacturing pliers according to an embodiment suitable for use in manufacturing the orthodontic wire 11 by bending will be described.

  FIG. 4 is a side view of the pliers 100 for manufacturing an orthodontic wire, FIGS. 5 and 6 are perspective views seen from two different directions, and FIG. 7 is a side view of a state in which the jaw is closed, FIG. 8 shows a front view with the jaws closed.

  As shown in FIGS. 4 to 8, the pliers 100 for manufacturing an orthodontic wire includes a first arm 101 and a second arm 102. The 1st arm 101 and the 2nd arm 102 have the shape curved in the substantially S shape which consists of a gentle curve as a whole. FIG. 4 shows a state in which the first arm 101 and the second arm 102 are opened. The first arm 101 and the second arm 102 are connected to each other in an X shape by a connecting shaft 103 so as to be rotatable around the connecting shaft 103. The connecting shaft 103 is composed of a cylindrical convex portion provided on the surface of the first arm 101 facing the second arm 102, and this convex portion is provided on the surface of the second arm 102 facing the first arm 101. It is fitted in a cylindrical hole.

  The first arm 101 has a jaw 104 at the front end and a grip 105 on the rear end side. The outer surface of the handle 105 is covered with a grip 106 made of, for example, a tubular plastic molded product. Similarly, the 2nd arm 102 has the jaw part 107 in the front end, and has the grip handle 108 in the rear end side. The outer surface of the grip handle 108 is covered with a grip 109 made of, for example, a plastic molded product. The material of the first arm 101 and the second arm 102 is not particularly limited as long as it is a material having a sufficiently high mechanical strength capable of bending a metal wire such as a stainless steel wire. For example, a steel material (carbon Tool steel, machine structural carbon steel, etc.).

A clamping part 110 is provided on the distal end side of the jaw part 104 of the first arm 101 in a state of protruding slightly inward. Similarly, a clamping portion 111 is provided on the distal end side of the jaw portion 107 of the second arm 102 in a state of slightly protruding inward. 9A is a cross-sectional view of the holding portion 110 of the jaw 104 of the first arm 101 (enlarged sectional view taken along the line AA in FIG. 4), and FIG. 9B is a holding portion of the jaw 107 of the second arm 102. FIG. 9C is a cross-sectional view showing the sandwiching portion 110 and the sandwiching portion 111 in a state where the jaw portion 104 and the jaw portion 107 are closed. . As shown in FIGS. 4 to 8 and 9A, the first arm 101 is placed on the surface of the clamping part 110 of the jaw part 104 of the first arm 101 facing the clamping part 111 of the jaw part 107 of the second arm 102. A convex portion 112 (see FIG. 5) having a triangular prism shape is provided so as to extend along the direction. Further, as shown in FIGS. 4 to 8 and FIG. 9B, the second arm is formed on the surface of the clamping part 111 of the jaw part 107 of the second arm 102 facing the clamping part 110 of the jaw part 104 of the first arm 101. A triangular prism-shaped recess 113 (see FIG. 6) extending in a direction along the line 102 is provided. As shown in FIG. 9A, the apex angle φ ₁ of the triangle in the cross section perpendicular to the longitudinal direction of the convex part 112 of the clamping part 110 of the jaw part 104 of the first arm 101 is 155 ° or more and 173 ° or less, and from this range It is determined according to θ ₁ and θ ₂ of the orthodontic wire 11 to be manufactured. Similarly, as shown in FIG. 9B, the apex angle φ ₂ of the triangle in the cross section perpendicular to the longitudinal direction of the concave portion 113 of the clamping portion 111 of the jaw portion 107 of the second arm 102 is 155 ° or more and 173 ° or less. Specifically, it is selected to be the same as the apex angle φ ₁ of the triangle in the cross section perpendicular to the longitudinal direction of the convex part 112 of the clamping part 110 of the jaw part 104 of the first arm 101. When the first arm 101 and the second arm 102 are rotated around the connecting shaft 103 to close the jaw portion 104 of the first arm 101 and the jaw portion 107 of the second arm 102, the jaw portion of the first arm 101 The convex part 112 of 104 clamping part 110 and the recessed part 113 of the clamping part 111 of the jaw part 107 of the 2nd arm 102 are comprised so that it may mutually fit. FIG. 9C shows a state where the convex part 112 of the clamping part 110 of the jaw part 104 of the first arm 101 and the concave part 113 of the clamping part 111 of the jaw part 107 of the second arm 102 are fitted together.

[How to use pliers for manufacturing orthodontic wires]
A method of using the pliers 100 for manufacturing the orthodontic wire will be described. Here, although the case where an orthodontic wire is manufactured using an arch-shaped metal wire is considered, the case where a linear metal wire is used is the same.

  As shown in FIGS. 10 and 11, the person who manufactures the orthodontic wire 11 holds the arched metal wire 20 in one hand (not shown) and the other hand (not shown) The straight wire manufacturing pliers 100 have a first arm 101 grip 106 and a second arm 102 grip 109. Next, with the jaw portion 104 of the first arm 101 and the jaw portion 107 of the second arm 102 slightly opened, the convex portion 112 of the clamping portion 110 of the jaw portion 104 and the concave portion 113 of the clamping portion 111 of the jaw portion 107. Pass the metal wire 20 between them. The direction in which the metal wire 20 is passed is a direction orthogonal to the plane formed by the first arm 101 and the second arm 102 and orthogonal to the extending direction of the convex portion 112 and the concave portion 113. Next, the grip handle 106 of the first arm 101 and the grip handle 109 of the second arm 102 are gripped to close the jaw portion 104 and the jaw portion 107, and the metal wire 20 is sandwiched between the convex portion 112 and the concave portion 113. . This state is shown in FIG. 12A. Next, when the grip handle 106 of the first arm 101 and the grip handle 109 of the second arm 102 are gripped more firmly and the jaw portion 104 and the jaw portion 107 are further closed, as shown in FIG. When the central portion of the metal wire 20 supported by is pushed by the tip of the convex portion 112, the metal wire 20 begins to bend. The jaw 104 and the jaw 107 are closed to the limit by grasping the first arm 101 and the second arm 102 more firmly, and the metal wire 20 is completely sandwiched between the slope of the projection 112 and the slope of the recess 113. Touch in contact. After this state is continued for a certain period of time, the gap between the grip handle 106 of the first arm 101 and the grip handle 109 of the second arm 102 is widened to open the jaw portion 104 and the jaw portion 107, and the metal wire that has been bent is finished. 20 is taken out. Then, the position of the metal wire 20 in the longitudinal direction is shifted and the same bending process as described above is performed to produce the intended orthodontic wire 11 as shown in FIGS.

[How to use orthodontic wire 11]
A method of using the orthodontic wire 11 in orthodontic treatment will be described. When using the orthodontic wire 11, it is determined in advance whether or not a tooth is to be extracted and which tooth is to be extracted, and necessary extraction is performed. Also, leveling and alignment of maxillary teeth and / or mandibular teeth for orthodontic treatment, correction of the dental arch form, and some correction (about 80%) of the torsion teeth are performed.

  Thus, when the upper teeth and / or lower teeth are in an appropriate state for starting the orthodontic treatment using the orthodontic wire 11, the orthodontic treatment using the orthodontic wire 11 is performed. In this state, the crown portions of the teeth are usually aligned to some extent, but the directions of the tooth axes are different.

  FIG. 13A is a view of upper teeth viewed from the inside of the oral cavity, and FIG. 13B is a view of lower teeth viewed from the oral cavity to the lower side. 13A and B, reference numerals 1L and 1R are left and right middle incisors, 2L and 2R are left and right side incisors, 3L and 3R are left and right canines, and 4L and 4R are left sides, respectively. And right first premolars, 5L and 5R are left and right second premolars, 6L and 6R are left and right first premolars, respectively, and 7L and 7R are left and right second premolars, respectively. 8L and 8R represent the left and right third molars, respectively. However, FIGS. 13A and 13B show a case where the teeth are arranged almost ideally.

  As shown in FIG. 13A, upper central incisors 1L and 1R, side incisors 2L and 2R, canines 3L and 3R, first premolars 4L and 4R, and second premolars 5L and 5R in front of the crown portion. The bracket 201 is bonded to the substantially central portion using a dental adhesive, and the bondable tube 202 is similarly bonded to the substantially central portion of the front surface of the crown portion of the first molars 6L and 6R. However, actually, the first premolars 4L and 4R or the second premolars 5L and 5R are extracted. And the 1st part 11a, the 3rd part 11c, and the 5th part 11e are turned up with respect to the 2nd part 11b and the 4th part 11d of the orthodontic wire 11, and the 1st part 11a, the 3rd part 11c, and the 5th part 11e Are bent downward with respect to the second portion 11b and the fourth portion 11d, and in a state of being nearly horizontal, the second portion 11b, the third portion 11c and the orthodontic wire 11 are inserted into the slots of the brackets 201. The first portion 11a and the fifth portion 11e of the orthodontic wire 11 are passed through the bondable tube 202 through the fourth portion 11d, and the tip portions of the first portion 11a and the fifth portion 11e that protrude rearward from the bondable tube 202 are passed through. The first part 11 a and the fifth part 11 e are fixed to the bondable tube 202 by bending. Accordingly, the first portion 11a is attached to the front surface of the crown portion of the left first molar 6L, and the second portion 11b is attached to the left first premolar 4L and second premolar 5L (actually, the first small The third portion 11c is attached to the front surface of the crown portion of one of the molar 4L and the second premolar 5L), and the third portion 11c is the left and right central incisors 1L and 1R, side incisors 2L and 2R, and canines 3L and 3R. Of the first premolar 4R and the second premolar 5R (actually one of the first premolar 4R and the second premolar 5R). The fifth portion 11e is attached to the front surface of the crown portion of the right first molar 6R. Thereafter, a bondable tube in which one end of a power chain (not shown) selected so that an appropriate horizontal correcting force works in consideration of an appropriate correcting force is attached to one of the first molars 6L and 6R. 202 hooks (see FIG. 15F) and fixed, hooked to each bracket 201 attached to the maxillary anterior teeth, etc. while extending the power chain, and attached to the hook of the bondable tube 202 attached to the other of the first molars 6L and 6R. Hook the other end of the power chain and fix it. As shown in FIG. 13B, the orthodontic wire 11 is similarly attached to the lower jaw tooth, and the power chain is hooked. The proper horizontal correction force is, for example, a stainless steel wire having a rectangular cross-sectional shape of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″), and the front teeth Is moved backward (lowered), generally a force of 100 to 200 g, a rectangular cross-sectional shape of 0.43 mm x 0.64 mm (0.017 "x 0.025") is used. In the case of using the stainless steel wire having the first molars 6L and 6R to move mesial, the force is generally 300 to 400 g.

  FIG. 14 is a perspective view showing a state in which the orthodontic wire 11 is attached to the upper and lower teeth. However, in FIG. 14, only the part which is not covered with gingiva and is exposed to the outside is shown for both the upper and lower jaw teeth.

  The torque angle, angulation angle, offset angle and span (distance between the outer sides of the left and right wings) of the bracket 201 are determined for each tooth. As an example of the bracket 201, the brackets 201 for the maxillary right middle incisor, the maxillary right side incisor, the maxillary right canine, the maxillary right first premolar, and the maxillary right second premolar are shown in FIGS. Show. An example of the bondable tube 202 for the first molars 6L and 6R is shown in FIG. 15F. As an example, the case of using “Microarch Formula R (loss type) maxilla” manufactured by Tommy International Co., Ltd. is as follows. The bracket 201 for the maxillary central incisor shown in FIG. 15A has a torque angle of 12 °, an angulation angle of 5 °, an offset angle of 0 °, a span of 3.4 mm, and a bracket for the maxillary incisor shown in FIG. 15B. The torque angle of 201 is 8 °, the angulation angle is 9 °, the offset angle is 0 °, the span is 2.6 mm, the torque angle of the bracket 201 for the maxillary canine shown in FIG. 15C is −2 °, and the angulation angle Is 10 °, the offset angle is 4 °, the span is 2.6 mm, the torque angle of the bracket 201 for the maxillary right first premolar and the maxillary right second premolar shown in FIGS. The adjustment angle is 0 °, the offset angle is 2 °, and the span is 2.6 mm. 15A to 15E, reference numeral 201a indicates a slot of the bracket 201. The cross-sectional shape of the slot 201a is generally almost rectangular. The bondable tube 202 has a torque angle of −14 °, an angulation angle of 0 °, an offset angle of 14 °, and a span of 4.0 mm.

  The use of the orthodontic wire 11 has proven that the present inventors have performed orthodontic treatment for many years to enable three-dimensional tooth movement with little damage to the tissue. The mechanism that enables three-dimensional tooth movement by using the orthodontic wire 11 has not yet been completely theoretically elucidated yet, but the following will attempt to explain the mechanism theoretically.

As described above, the orthodontic wire 11 has the tip back bend portion B _TB , the second portion 11b and the third portion 11c at the boundary between the first portion 11a and the second portion 11b, as shown in FIGS. boundary torque holding bend B _TH between the fifth portion 11e and the tip back bend B _TB at the boundary between the fourth portion 11d, a fourth portion 11d and the torque holding bend B _TH at the boundary between the third portion 11c Have For this reason, when the orthodontic wire 11 is passed through the slot 201a and the bondable tube 202 of each bracket 201, the third portion 11c has the second portion 11b and the fourth portion centered on the torque holding bend portion _BTH . With respect to the portion 11d, the orthodontic wire 11 for the maxillary teeth is bent downward as shown in FIG. 16, and the orthodontic wire 11 for the mandibular teeth is bent upward as shown in FIG. Bend to. Further, the first portion 11a and the fifth portion 11e are arranged in the orthodontic wire 11 for the maxillary teeth with respect to the second portion 11b and the fourth portion 11d with the tip back bend portion B _TB as the center. As shown in FIG. 17, the orthodontic wire 11 for the lower jaw is bent upward as shown in FIG. As a result, the first portion 11a, the fifth portion 11e, and the third portion 11c are positioned in substantially the same plane. On the other hand, the second portion 11b and a fourth portion 11d, as a result of the third portion 11c is bent relative to the second portion 11b and a fourth portion 11d around the torque holding bend B _TH, orthodontic for maxillary teeth As shown in FIG. 16, the wire 11 for bending is curved upward in a mountain shape, and the orthodontic wire 11 for lower teeth is curved downward in a mountain shape as shown in FIG. If the curvature of the second portion 11b and the fourth portion 11d is ignored, the orthodontic wire 11 as a whole is located in substantially the same plane. At this time, due to the elasticity of the orthodontic wire 11, in the orthodontic wire 11 for the maxillary teeth, a force that restores the original position indicated by the alternate long and short dash line with respect to the third portion 11c is an arrow in FIG. In the orthodontic wire 11 for the mandibular teeth, the force that restores to the original position indicated by the alternate long and short dash line with respect to the third portion 11c is shown in FIG. As shown by an arrow 17 in FIG. 17, it acts vertically downward with respect to the third plane, and in any case, a torque in the rotational direction that inclines the front teeth toward the labial side is applied. This force becomes a correction force in a substantially vertical direction. This force is greater closer to the torque holding bend B _TH, central incisor, lateral incisor, increases in the order of canine, shows the situation in the length of the vertical arrow in FIG. 16 and FIG. 17. For example, when a stainless steel wire having a rectangular cross section of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″) is used as the orthodontic wire 11, Tooth and mandibular central incisor are subjected to a force of 100 ± 30 g weight, maxillary incisor and mandibular incisor to a force of 200 ± 50 g weight, and maxillary canine and mandibular canine to a force of 250 ± 50 g Will be added. On the other hand, since the power chain is hooked on each bracket and the bondable tube as described above, a substantially horizontal correction force acts on the lingual side of the orthodontic wire 11.

  18A is attached to maxillary left and right central incisors 1L and 1R, maxillary left and right incisors 2L and 2R, maxillary left and right canines 3L and 3R, and maxillary left and right first premolars 4L and 4R, respectively. An example of a state in which the orthodontic wire 11 is passed through the slot 201a of the bracket 201 is shown, and the dental arch is developed in a plane parallel to the frontal surface so that the orthodontic wire 11 is positioned in the plane. FIG. In FIG. 18A, reference numerals 201b and 201c denote mesial and distal wings of the bracket 201, respectively. FIGS. 18B to 18I show upper right first premolar 4R, upper right canine 3R, upper right incisor 2R, upper right central incisor 1R, upper left central incisor 1L, upper left left incisor 2L, respectively. It is the cross-sectional view to which the orthodontic wire 11 in the slot 201a of the bracket 201 each mounted | worn with the upper left canine 3L and the upper left first premolar 4L is expanded, and the left side of each figure is a front side. What is important here is that the orthodontic wire 11 has a long side of a rectangular cross section in a substantially horizontal direction in the first premolars 4L and 4R, whereas the left central and right central incisors 1L. 1R, maxillary left and right incisors 2L and 2R, and maxillary left and right canines 3L and 3R are rotated and twisted around the central axis of the orthodontic wire 11 and have a rectangular cross section. That is, the side, and therefore, the upper surface of the orthodontic wire 11 is inclined so that the inner side is lower than the horizontal direction. FIG. 19 is an enlarged view of a portion from the upper first premolar 4R to the upper right canine 3R of the orthodontic wire 11 in this state. A plan view of the orthodontic wire 11 in this state is shown in FIG.

For a certain period after the orthodontic wire 11 is attached, the left and right central incisors 1L and 1R, the upper left and right incisors 2L and 2R, and the left and right canines 3L and 3R of the upper jaw The orthodontic wire 11 in the slot 201a is usually in surface contact with the bottom surface or side surface of the slot 201a. When a certain period of time has elapsed since the orthodontic wire 11 is attached, the torque holding bend _BTH is provided on the orthodontic wire 11 so that a force continuously acts in the direction perpendicular to the third plane, and the power chain As a result, the orthodontic wire moves as a result of the movement of the upper left and right middle incisors 1L and 1R, the upper left and right incisors 2L and 2R, and the upper left and right canines 3L and 3R. 11 comes into point contact or line contact with the bottom surface and both side surfaces of the slot 201a of the bracket 201, and is thereafter fixed in this state. In other words, the orthodontic wire 11 is locked in a state of point contact or line contact with the bottom surface and both side surfaces of the slot 201a of the bracket 201. This state is shown in FIGS. That is, FIG. 21 is a cross-sectional view showing a state in which the orthodontic wire 11 is passed through the slot 201a of the bracket 201 attached to the upper right central incisor 1R. FIG. 22 is a cross-sectional view showing a state in which the orthodontic wire 11 is passed through the slot 201a of the bracket 201 attached to the upper right incisor 2R. FIG. 23 is a cross-sectional view showing a state where the orthodontic wire 11 is passed through the slot 201a of the bracket 201 attached to the upper right canine 3R. The cross-sectional shape and dimensions of the slot 201a of the bracket 201 are appropriately determined according to the orthodontic wire 11 to be used. For example, stainless steel having a rectangular cross-sectional shape of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″) as the orthodontic wire 11 when the first premolar is extracted and orthodontic is performed. When using the wire made, the slot 201a has a rectangular cross-sectional shape of 0.56 mm (width) × 0.71 mm (depth) (0.022 ″ × 0.028 ″). Stainless steel wire having a rectangular cross-sectional shape of 0.43 mm × 0.64 mm (0.017 ″ × 0.025 ″) as orthodontic wire 11 when the second premolar is extracted and orthodontic is performed The bracket 201 having the same slot 201a is also used when using. As shown in FIGS. 21 to 23, the orthodontic wire 11 is accommodated in a state of the rotation angle Θ with respect to the slot 201a of the rectangular cross-sectional shape, one of Ling E ₁ orthodontic wire 11 slots The bottom surface of 201a is in point contact or line contact, and the two ridges E ₂ and E ₃ on both sides of this ridge E ₁ are in point contact or line contact with both side surfaces of the slot 201a. Θ is typically approximately equal to θ ₂ , for example, if θ ₂ is 20 °, Θ is also approximately 20 °. 21 to 23, for example, when F ₁ and F ₂ have the same size, the angle formed by the resultant force F of F ₁ and F ₂ and the horizontal direction is approximately 45 °, for example. Become. The same applies to the maxillary left central incisor 1L, the maxillary left side incisor 2L, and the maxillary left canine 3L. On the other hand, FIG. 24 is a sectional view showing a state where the orthodontic wire 11 is passed through the slot 201a of the bracket 201 attached to the first premolar 4R. As shown in FIG. 24, the orthodontic wire 11 is accommodated in the slot 201a in a substantially horizontal state, and one of the portions is in contact with the side surface or the bottom surface of the slot 201a. In this case, the orthodontic wire 11 has play in the slot 201a and is not locked. The above is the same for the upper left first premolar, the same for the upper left and right second premolars, and the same for the lower left and right first premolars and second premolars. It is.

As shown in FIGS. 21 to 23, one ridge E ₁ of the orthodontic wire 11 is in point contact or line contact with the bottom surface of the slot 201a, and two ridges E ₂ and E _{3 on} both sides of the ridge E ₁ are formed. After locking in a state of point contact or line contact with both side surfaces of the slot 201a, each bracket 201 attached to the maxillary right middle incisor 1R, maxillary right side incisor 2R and maxillary right canine 3R has an orthodontic The wire 11 has a substantially horizontal correction force F ₁ and a substantially vertical correction force F ₂ perpendicular to the third plane, and as a result, the resultant force F of F ₁ and F ₂ is applied to each bracket 201 and thus this bracket. 201 is added to the crown portion of the tooth to which 201 is attached. As shown in FIGS. 13A and B, the substantially horizontal correction force F ₁ is finally set to a temporary point P (for example, the dental arch is reflected by the curvature of the dental arch). It faces the point in the horizontal plane and the midplane. However, the point P does not mean an exact point, but means a region having a certain spread, for example, a circular region having a diameter of about 1 to 10 mm. As a result of the resultant force F applied to the maxillary right middle incisor 1R, maxillary right side incisor 2R and maxillary right canine 3R, finally set as the intersection of the extension lines of the central axes (or tooth axes) of the roots of these teeth These teeth move in a three-dimensional manner so that the roots of these teeth are aligned toward a temporary point (herein referred to as a gathering point GP). However, the set point GP does not mean an exact point, but means a region having a certain spread, for example, a spherical region having a diameter of about 1 to 10 mm. Since the orthodontic wire 11 is in point contact or line contact with the slot 201a as described above, the frictional force between the orthodontic wire 11 and the slot 201a is greatly increased when the tooth body moves. So that the orthodontic wire 11 can move smoothly in the slot 201a. As a result, not only the correction force in the horizontal direction is small, but also the tooth movement can be performed more quickly and smoothly. The same applies to the maxillary left central incisor 1L, maxillary left side incisor 2L and maxillary left canine 3L, and further, the mandibular left and right central incisors, the mandibular left and right side incisors and the mandibular left side. The same applies to the right canine. As described above, the three-dimensional tooth movement of the front teeth is possible, and finally the roots of each tooth can be radially aligned toward the set point GP.

FIG. 25 shows how three-dimensional tooth movement occurs in this way. In FIG. 25, reference numeral 301 indicates an alveolar bone, 302 indicates a periodontal ligament, and 303 indicates a tooth. As described above, a substantially horizontal correction force F ₁ and a substantially vertical correction force F ₂ are applied to the teeth 303 by the bracket, and the resultant force F is applied to the teeth 303. As a result, the teeth 303 are indicated by a one-dot chain line. The tooth body moves in three dimensions. At this time, since jigging is not performed, root absorption of the teeth 303 can be effectively prevented.

On the other hand, as shown in FIG. 24, the bracket 201 attached to the first premolar 4R has the orthodontic wire 11 accommodated in the slot 201a in a substantially horizontal state, whereby a substantially horizontal correcting force is obtained. F ₁ works. In addition to this, in the bracket 201 attached to the first premolar 4R, as shown in FIG. 16, the second portion 11b and the fourth portion 11d of the orthodontic wire 11 are curved upward in a mountain shape. As a result, an almost upward force (referred to as F ₃ ) works. As a result, the resultant force of F ₁ and F ₃ is applied to the bracket 201 attached to the first premolar 4R and eventually to the crown portion of the first premolar 4R. As a result of applying this resultant force, finally, the first premolar 4R moves the tooth body so that the extension line of the central axis of the root of the tooth is directed to the set point GP. The above is the same for the upper left first premolar, the same for the upper left and right second premolars, and the same for the lower left and right first premolars and second premolars. It is.

  A method of performing orthodontic treatment using the orthodontic wire 11 will be described more specifically by taking as an example the case of performing orthodontic treatment of the upper teeth. The same applies to orthodontic treatment of the lower jaw teeth.

(1) When the first premolar is extracted and orthodontic treatment is performed In this case, as shown in FIG. 26A, a rectangular cross section of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″) The orthodontic wire 11 is made of a stainless steel wire having a shape and θ ₁ = θ ₂ = 20 °. In this case, the length L ₄ of the fourth portion 11d has a boundary portion between the right second bicuspid 5R and first molar 6R, distal side of the bracket 201 which is attached to the front surface of the crown portion of the canine 3R Is selected to be approximately equal to the distance between the end face of the tube and the position that is centrifuged 3 to 5 mm. Similarly, the length L ₂ of the second portion 11b is on the left side of the second premolar 5L and the boundary portion between the first molar 6L, bracket 201 which is attached to the front surface of the crown portion of the left canine 3L The distance is selected to be approximately equal to the distance between the end face on the centrifugal side and the position centrifuged 3 to 5 mm.

First, the bracket 201 is bonded to the front surface of the crown portion of each of the patient's upper anterior teeth and premolar teeth, and the bondable tube 202 is bonded to the front surface of the crown portion of the first molar 6R. The orthodontic wire 11 is attached to the bracket 201 and the bondable tube 202 by the method. Thus, the orthodontic wire 11 is fixed to the maxillary tooth using the bracket 201 and the bondable tube 202. Thereafter, as described above, a power chain (not shown) is hooked on the bracket 201 and the bondable tube 202. FIG. 26B shows a state where the dental arch with the orthodontic wire 11 attached is viewed from the right side. At this time, tip back bend B _TB of the boundary between the first portion 11a and a second portion 11b in the boundary portion between the second premolar 5L and first molar 6L on the left side, the second portion 11b and the third portion 11c a position boundary torque holding bend B _TH of the 3~5mm centrifuged from the end face of the distal side of the bracket 201 which is attached to the front surface of the crown portion of the left canine 3L and, fifth portion 11e and a fourth portion 11d the tip-back bend _TB of boundary between the right two at the boundary between the premolars 5R and the first molar 6R, torque holding bend B _TH of the boundary between the fourth portion 11b and the third portion 11c right Each of the canine teeth 3R is positioned at a position 3 to 5 mm away from the distal end surface of the bracket 201 attached to the front surface of the crown portion of the canine 3R.

When the orthodontic wire 11 is attached to the patient's upper teeth as described above, finally, the front teeth move three-dimensionally so that the extension line of the central axis of their roots is directed to the set point GP. Similarly, the second premolars 5L and 5R move the tooth body so that the extension line of the central axis of their roots is directed to the set point GP. Then, the space formed by the extraction of the first premolar is closed (or filled) in the process in which the front teeth and the second premolars 5L and 5R move the tooth bodies. At this time, as shown in FIG. 26B, the second portion 11b and the fourth portion 11d of the orthodontic wire 11 are curved upward in a mountain shape, but the front surfaces of the crown portions of the second premolars 5L and 5R. When the orthodontic wire 11 is accommodated in the slot 201a of the bracket 201 attached to the bracket 201, the upward bending of the orthodontic wire 11 is restricted by the slot 201a. The upper side surface of the slot 201a of the side wing 201b and the lower side surface of the slot 201a of the centrifugal side wing 201c are brought into contact with each other. As a result, an upward force F ₃ in a direction slightly inclined rearward with respect to the vertical direction is applied to the second premolars 5L and 5R. In this case, the tip back of the first molars 6L and 6R is applied to the first molars 6L and 6R by the first part 11a and the fifth part 11e of the orthodontic wire 11 with the second premolars 5L and 5R as fulcrums. In this case, since the upward force F ₃ is applied to the second premolars 5L and 5R serving as fulcrums as described above, the second premolars 5L and 5R are prevented from protruding. can do. In addition, since the second portion 11b and the fourth portion 11d of the orthodontic wire 11 have play in the slot 201a of the bracket 201 and are not locked, the second premolars 5L and 5R and the second small portion of the lower jaw It is possible to prevent the occlusal relationship with the molars 5L and 5R from being damaged. Orthodontics is performed as described above.

(2) When the second premolar is extracted and orthodontic treatment is performed In this case, as shown in FIG. 27A, a rectangular cross section of 0.43 mm × 0.64 mm (0.017 ″ × 0.025 ″) The orthodontic wire 11 is made of a stainless steel wire having a shape and θ ₁ = θ ₂ = 15 °. At this time, the length L ₄ of the fourth portion 11d is approximately equal to the distance between the boundary between the right canine 3R and the first premolar 4R and the mesial side of the right first molar 6R. Equally chosen. Similarly, the length L ₂ of the second portion 11b is approximately the distance between the boundary portion between the left canine 3L and first premolar 4L, a mesial side of the first molar 6L of the left Equally chosen. The distance between the mesial side surface of the first molar 6R and the mesial side end surface of the bondable tube 202 attached to the front surface of the crown portion of the first molar 6R is 3 to 5 mm. Similarly, the distance between the mesial side surface of the first molar 6L and the mesial side end surface of the bondable tube 202 attached to the front surface of the crown portion of the first molar 6L is 3 to 5 mm. It is.

Next, the orthodontic wire 11 is fixed to the maxillary teeth using the bracket 201 and the bondable tube 202. Thereafter, as described above, a power chain (not shown) is hooked on the bracket 201 and the bondable tube 202. FIG. 27B shows a state where the dental arch with the orthodontic wire 11 attached is viewed from the right side. At this time, tip back bend B _TB of the boundary between the first portion 11a and a second portion 11b on the side of the mesial side of the first molar 6L on the left side, the boundary between the second portion 11b and the third portion 11c the boundary between the torque holding bent portion B _TH is left canine 3L and first premolar 4L, fifth portion 11e and the tip back bend B ₂ of the boundary between the fourth portion 11d right first molar 6R The torque holding bend portion B _{TH at} the boundary between the fourth portion 11b and the third portion 11c is located at the boundary portion between the right canine 3R and the first premolar 4R, respectively.

When the orthodontic wire 11 is attached to the patient's upper teeth as described above, finally, the front teeth move three-dimensionally so that the extension line of the central axis of their roots is directed to the set point GP. Similarly, the first premolars 4L and 4R move the tooth body so that the extension line of the central axis of their roots is directed to the set point GP. In addition, as described later, the first molars 6L and 6R move mesial. Then, while the front teeth and the second premolars 5L and 5R move the tooth bodies, the space formed by the extraction of the second premolars is closed in the process in which the first premolars 6L and 6R move mesial. (Or buried). At this time, as shown in FIG. 27B, the second portion 11b and the fourth portion 11d of the orthodontic wire 11 are curved upward in a mountain shape, but the front surfaces of the crown portions of the first premolars 4L and 4R. When the orthodontic wire 11 is accommodated in the slot 201a of the bracket 201 attached to the bracket 201, the upward bending of the orthodontic wire 11 is limited by the slot 201a. The wing 201c is in contact with the upper side surface of the slot 201a and the lower side surface of the slot 201a of the mesial wing 201b. As a result, an upward force F ₃ in a direction slightly inclined forward with respect to the vertical direction is applied to the first premolars 4L and 4R. By applying a force F ₃ slightly inclined forward with respect to the vertical direction, the first premolars 4L and 4R serve as a fixed source to move the first premolars 6L and 6R mesial. On the other hand, in this case, the tip backs of the first molars 6L and 6R are the first molars 6L and 6R by the first part 11a and the fifth part 11e of the orthodontic wire 11 with the first premolars 4L and 4R as fulcrums. However, at this time, since the upward force is applied to the first premolars 4L and 4R serving as fulcrums as described above, the first premolars 4L and 4R are squeezed out. Can be prevented. In addition, since the second portion 11b and the fourth portion 11d of the orthodontic wire 11 have play in the slot 201a of the bracket 201 and are not locked, the first premolars 4L and 4R and the first small portion of the lower jaw It is possible to prevent the occlusal relationship with the molars 4L and 4R from being damaged. Orthodontics is performed as described above.

  A specific example in which orthodontic treatment is actually performed using the orthodontic wire 11 will be described.

  28A to 28C are photographs obtained by photographing the upper and lower jaw teeth at the first visit of the patient before orthodontic treatment from the front, right side, and left side. As shown in FIGS. 28A to 28C, in this state, not only the maxillary dentition protrudes considerably forward due to the maxillary front protrusion, but also the tooth arrangement is poor.

  29A to 29C, before starting to use the orthodontic wire 11, leveling and alignment of the upper and lower teeth, correction of the dental arch form, some correction of the torsional teeth (about 80%), and the like. Therefore, after extracting the left and right first premolars of the upper and lower jaw teeth, a super elastic orthodontic wire made of shape memory alloy (NiTi) that has been generally used in the early stage of orthodontic treatment. The state which attached to upper and lower teeth is shown. However, FIGS. 29A to 29C are photographs of upper and lower jaw teeth taken from the front, right side and left side.

FIGS. 30A to C are photographs of upper and lower jaw teeth of a patient taken from the front, right side, and left side after about one month and one week have passed since the superelastic orthodontic wires were attached to the upper and lower teeth. As shown in FIGS. 30A to 30C, in this state, the lower teeth are still in poor alignment, but the upper teeth are considerably improved in alignment, and the use of the orthodontic wire 11 can be started. . Therefore, as shown in FIGS. 30A to 30C, the orthodontic wire 11 was attached to the maxillary tooth as described above with the superelastic orthodontic wire attached to the lower jaw tooth. At this point, the left and right canines 3L and 3R are in the angle malocclusion class II state, and in order to move these canines 3L and 3R to the angle malocclusion class I state, The chain is between the bracket 201 attached to the left canine 3L and the bondable tube 202 attached to the left first molar 6L and between the bracket 201 attached to the right canine 3R and the left first large It was hooked between the bondable tube 202 attached to the molar 6R. As the bracket 201 and the bondable tube 202, “Microarch Formula R (loss type) maxilla” manufactured by Tommy International Co., Ltd. was used. The slot 201a of the bracket 201 has a rectangular cross-sectional shape of 0.56 mm × 0.71 mm (0.022 ″ × 0.028 ″). A photograph of the orthodontic wire 11 used is shown in FIG. 31A. This orthodontic wire 11 is a stainless steel wire having a rectangular cross-sectional shape of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″), and θ ₁ = θ ₂ = 20 °. is there. As a power chain, “Pro Chain (Elastomeric Chain for Orthodontics) Part No. 505-0036 Medium Force M Space” manufactured by Dentsu Supply Sankin Co., Ltd. was used. A photograph of the power chain used is shown in FIG. 31B. This power chain uses thermosetting polyurethane, and in the initial unstretched state, a ring with an inner diameter of about 1.2 mm and an outer diameter of about 3 mm is connected with a pitch of about 3.7 mm. .5 mm.

32A to 32C are photographs obtained by photographing the upper and lower jaw teeth of the patient from the front side, the right side, and the left side after about two months and two weeks have passed since the orthodontic wire 11 was attached to the upper teeth. As shown in FIGS. 32A to 32C, the left and right canines 3L and 3R of the maxillary teeth have moved to an angle malocclusion class I state. In addition, as shown in FIGS. 32A to 32C, the alignment of the lower jaw teeth is considerably improved, and the use of the orthodontic wire 11 can be started. Therefore, as shown in FIGS. 32A to 32C, the orthodontic wire 11 was attached to the lower jaw teeth. At this point, the left and right canines 3L and 3R are in the angle malocclusion class II state, and in order to move these canines 3L and 3R to the angle malocclusion class I state, The chain is between the bracket 201 attached to the left canine 3L and the bondable tube 202 attached to the left first molar 6L and between the bracket 201 attached to the right canine 3R and the left first large It was hooked between the bondable tube 202 attached to the molar 6R. As the bracket 201 and the bondable tube 202, “Microarch Formula R (loss type) mandible” manufactured by Tommy International Co., Ltd. was used. The slot 201a of the bracket 201 has a rectangular cross-sectional shape of 0.56 mm × 0.71 mm (0.022 ″ × 0.028 ″). The used orthodontic wire 11 is as shown in FIG. This orthodontic wire 11 is a stainless steel wire having a rectangular cross-sectional shape of 0.41 mm × 0.56 mm (0.016 ″ × 0.022 ″), and θ ₁ = θ ₂ = 20 °. is there. As the power chain, the one already described was used.

  33A to 33C are photographs obtained by photographing the upper and lower jaw teeth of the patient from the front, the right side, and the left side after about 6 months have passed since the orthodontic wire 11 is attached to the lower jaw teeth. As shown in FIGS. 33A to 33C, the left and right canine teeth 3L and 3R of the lower jaw teeth have moved to an angle malocclusion class I state. Further, as shown in FIGS. 33A to 33C, it can be seen that the upper anterior teeth and the lower anterior teeth have begun to be aligned by tooth movement, and the space formed by the extraction of the left and right first premolars is considerably closed. At this point, the mounting method of the power chain was changed, and the power chain was hooked on the bracket 201 attached to the front teeth and the second premolars for both the upper and lower teeth, and both ends were attached to the first molars. Fixed to the bondable tube 202.

  FIGS. 34A to 34C are photographs of upper and lower jaw teeth of a patient taken from the front, right side, and left side after about 5 months and 2 weeks after the orthodontic wire 11 was attached to the upper and lower teeth. As shown in FIGS. 34A-C, it can be seen that the upper and lower anterior teeth continue to be better aligned, and the space formed by the extraction of the left and right first premolars is almost completely closed. At this point, the orthodontic wires 11 were removed from both the upper and lower jaw teeth, and the above-mentioned superelastic orthodontic wires were attached to the upper and lower teeth, respectively, in order to finish the leveling.

  35A to 35C are photographs obtained by photographing the upper and lower jaw teeth of the patient from the front, the right side, and the left side after about 3 months and 4 weeks have passed since the superelastic orthodontic wires were attached to the upper and lower teeth. As shown in FIGS. 35A to 35C, it can be seen that the upper and lower teeth are well leveled.

  36A-C show that after about 2 months and 2 weeks have passed since the superelastic orthodontic wires were attached to the upper and lower teeth, the superelastic orthodontic wires attached to the upper and lower teeth were removed, It is the photograph which image | photographed the patient's upper and lower jaw teeth from the front, the right side, and the left side. As shown in FIGS. 36A to 36C, it can be seen that the upper anterior teeth and the lower anterior teeth were well aligned, and the space formed by the extraction of the first premolar was completely closed.

  Thus, the orthodontic treatment using the orthodontic wire 11 is completed.

  FIG. 37 shows a panoramic radiograph of the patient taken before the start of orthodontic treatment. FIG. 38 shows a panoramic radiograph of the patient taken after the orthodontic treatment. As is clear from comparison of FIG. 38 with FIG. 37, root resorption does not occur after orthodontic treatment. It can also be seen that the maxillary anterior teeth and the mandibular anterior teeth are well aligned, and the space formed by the extraction of the first premolar is completely closed.

As described above, according to this embodiment, a novel orthodontic wire 11 can be realized. When the orthodontic wire 11 is mounted with a bracket 201 and Bonn double tube 202 to the upper jaw teeth or lower jaw tooth, the third portion 11c is folded on the lower or upper, respectively around the torque holding bend B _TH The combined force F of the substantially vertical correction force F ₂ generated by the above and the substantially horizontal correction force F ₁ generated by fixing both ends of the orthodontic wire 11 to the first molar is the left and right intermediate cuts. As a result of acting on the teeth 1L and 1R, the side incisors 2L and 2R and the canines 3L and 3R, these teeth are finally aligned so that the central axis of their roots is radially aligned toward the set point GP. Can be moved in three dimensions. At this time, since jigging is not performed, root resorption can be effectively prevented. Also, the bend angle of the torque holding bend B _TH, 25 ° suitable orthodontic wire 11 at 12 ° or more as is used to perform the orthodontic and dental extraction the first premolar below the second premolar The orthodontic wire 11 that is suitable for use in the case of tooth extraction and orthodontic treatment is as large as 7 ° or more and 20 ° or less, so that the thickness of the metal wire used for the orthodontic wire 11 can be small. An appropriate corrective force that is not too strong can be obtained, thereby minimizing tissue damage during correction. Furthermore, the first portion 11a and the fifth portion 11e of the orthodontic wire 11 are fixed to the left and right first molars. The orthodontic wire 11 includes the second premolars, the first molars, Having a tip back bend _BTB with a bend angle θ ₁ of 12 ° to 25 ° or 7 ° to 20 ° at the position of the mesial side surface of the first molar or the first molar. Since one molar is tipped distally, the first molar does not squeeze out, and only the distal cusp is squeezed and bites into the alveolar bone obliquely in a wedge shape. The horizontal correction force can be obtained using this fixed source. Moreover, according to this manufacturing method of the orthodontic wire 11, the above-described excellent orthodontic wire 11 can be manufactured easily and at low cost by bending. Furthermore, according to the pliers 100 for producing orthodontic wires, the metal wire can be easily bent, whereby the above-described excellent orthodontic wires 11 can be produced easily and at low cost. .

  The effect obtained by using the orthodontic wire 11 will be supplemented. That is, in order to enable three-dimensional tooth movement, the orthodontic wire 11 needs to have appropriate rigidity and flexibility. In this regard, the orthodontic wire 11 is a stainless steel wire of a × b = (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or stainless steel having mechanical properties equivalent thereto. A wire made of a metal other than steel, axb = (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) stainless steel wire, or stainless steel having mechanical properties equivalent thereto This condition is satisfied because the wire is made of a metal other than the above. In order to move a complex shaped tooth root, the rigidity and flexibility of the orthodontic wire 11 are important factors. By performing orthodontic treatment using the orthodontic wire 11, the force applied to the crown portion is transmitted to the entire root. At this time, neither excessive force nor unnecessary force is applied to the tooth, and the optimum force for the tooth movement (the appropriate corrective force is proportional to the root area) is always generated, and as a result, the bone replacement is performed in the optimum form. . More specifically, the conversion of alveolar bone by osteoclasts and osteoblasts, which is the normal reaction of the histology of the human body, is promoted, which leads to ideal tooth movement, resulting in ideal dentistry. Orthodontic treatment is possible. This orthodontic treatment does not cause pain or root resorption due to treatment.

  Although the embodiment of the present invention has been specifically described above, the present invention is not limited to the above-described embodiment, and various modifications based on the technical idea of the present invention are possible.

  For example, the numerical values, structures, shapes, materials, manufacturing methods and the like given in the above-described embodiments are merely examples, and different numerical values, structures, shapes, materials, manufacturing methods, etc. are used as necessary. Also good.

  For example, in the above-described specific example of actually performing orthodontic treatment, “Pro-Chain (Elastomeric Chain for Orthodontics) Part No. 504-0036 Light Force M Space” manufactured by Dentsu Supply Sankin Co., Ltd. is used as the power chain. May be. In addition, when performing orthodontic treatment by extracting the second premolar instead of the first premolar on the left and right sides of the upper and lower jaw teeth, as a power chain, for example, “Dentsu Supply Sankin Co., Ltd.” Pro chain (orthodontic elastometric chain) product number 505-0030 medium force s space "or" Pro chain (orthodontic elastometric chain) product number 506-0030 heavy force s space "can be used.

Further, the apex angle φ ₁ of the triangle in the cross section perpendicular to the longitudinal direction of the convex portion 112 of the jaw portion 104 of the first arm 101 of the orthodontic wire manufacturing pliers 100 and the jaw portion 107 of the second arm 102. The apex angle φ ₂ of the triangle in the cross section perpendicular to the longitudinal direction of the concave portion 113 of the sandwiching portion 111 is θ ₁ , θ ₂ is more than 25 °, or when producing an orthodontic wire less than 7 °, The angle may be less than 155 ° or greater than 173 °, for example, 150 ° or more and 176 ° or less.

  DESCRIPTION OF SYMBOLS 11 ... Orthodontic wire, 11a ... First part, 11b ... Second part, 11c ... Third part, 11d ... Fourth part, 11e ... Fifth part, 20 ... Metal wire, 100 ... Plier for manufacturing orthodontic wire , 101 ... First arm, 102 ... Second arm, 103 ... Connecting shaft, 104, 107 ... Jaw part, 110, 111 ... Clamping part, 112 ... Convex part, 113 ... Concave part, 201 ... Bracket, 201a ... Slot, 201b 201c ... Wing

Claims (16)

From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
An orthodontic wire characterized in that the third part has a length that can be stretched over the entire upper teeth of the patient's upper or lower jaw.   When performing orthodontic treatment of the patient's upper teeth, the first part, the third part, and the fourth part with respect to the second part and the fourth part in the state where the left and right first premolars have been extracted in advance. With the fifth part up, the first part is attached to the front face of the left first molar crown, and the second part is attached to the front face of the left second premolar The third part is attached to the front face of the left and right central incisors, side incisors and canine teeth, and the fourth part is attached to the front face of the right second premolar crown. The fifth part is attached to the front surface of the crown portion of the right first molar, and when performing orthodontic treatment on the lower jaw of the patient, the left first and right first premolars are already extracted. The first part, the third part and the second part and the fourth part. With the fifth part down, the first part is mounted on the front surface of the right first molar crown and the second part is mounted on the right second premolar crown surface. The third part is attached to the front of the left and right central incisors, side incisors and canines, and the fourth part is attached to the front of the left second premolar crown The orthodontic wire according to claim 1, wherein the fifth portion is attached to the front surface of the crown portion of the left first molar.   The orthodontic wire is made of a stainless steel wire having a rectangular cross section of (0.41 ± 0.02 mm) × (0.56 ± 0.02 mm) or a wire made of a material other than the stainless steel. The first plane is inclined at 15 ° to 22 ° with respect to the second plane, and the third plane is inclined at 15 ° to 22 ° with respect to the second plane on the same side as the first plane. The orthodontic wire according to claim 1, wherein the orthodontic wire is provided. From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined by 7 ° or more and 20 ° or less with respect to the second plane,
The third plane is inclined by 7 ° or more and 20 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
An orthodontic wire characterized in that the third part has a length that can be stretched over the entire upper teeth of the patient's upper or lower jaw.   When performing orthodontic treatment of the patient's upper teeth, the first part, the third part, and the second part and the fourth part with the left and right second premolars extracted in advance. With the fifth part up, the first part is attached to the front face of the left first molar crown and the second part is attached to the front face of the left first premolar The third part is attached to the front face of the left and right central incisors, side incisors and canine teeth, and the fourth part is attached to the front face of the right first premolar crown. The fifth part is mounted on the front surface of the crown portion of the right first molar, and when performing orthodontic treatment of the patient's lower teeth, the left and right second premolars are already extracted. The first part, the third part and the second part and the fourth part. With the fifth part down, the first part is mounted on the front face of the right first molar crown, and the second part is placed on the front face of the right first premolar. The third part is attached to the front of the left and right central incisors, side incisors and canines, and the fourth part is attached to the front of the left first premolar crown The orthodontic wire according to claim 4, wherein the fifth portion is attached to the front surface of the crown portion of the left first molar.   The orthodontic wire is made of a stainless steel wire having a rectangular cross section of (0.43 ± 0.02 mm) × (0.64 ± 0.02 mm) or a wire made of a material other than the stainless steel. The first plane is inclined at 10 ° to 17 ° with respect to the second plane, and the third plane is inclined at 10 ° to 17 ° with respect to the second plane on the same side as the first plane. The orthodontic wire according to claim 4, wherein the orthodontic wire is provided.   The orthodontic wire is manufactured by bending four portions of a single stainless steel wire or a wire made of a material other than the stainless steel. An orthodontic wire according to claim 1.   The orthodontic wire according to any one of claims 1 to 7, wherein the orthodontic wire bisects the third portion and is substantially symmetric with respect to a plane perpendicular to the second plane. Wire.   When the orthodontic wire is attached to a bracket attached to the front surface of the crown of the patient's maxillary or mandibular anterior teeth, one longitudinal ridge of the orthodontic wire makes point contact with the bottom surface of the bracket slot. The orthodontic wire according to any one of claims 1 to 8, wherein the ridges on both sides sandwiching the ridge are in point contact or line contact with both side surfaces of the slot of the bracket, respectively. An orthodontic set comprising an orthodontic wire and a bracket for attaching the orthodontic wire,
The orthodontic wire is
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third part has a length that can be stretched over the entire front teeth of the patient's upper or lower jaw,
The bracket is
An orthodontic set comprising a slot having a rectangular cross-sectional shape having a width of 0.56 ± 0.05 mm or a slot having a rectangular cross-sectional shape having a width of (0.56 ± 0.05 mm) × p . The orthodontic wire is composed of a stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.02 mm) × (0.56 ± 0.02 mm) or a wire made of a material other than the stainless steel,
The first plane is inclined at 15 ° or more and 22 ° or less with respect to the second plane,
The third plane is inclined at 15 ° or more and 22 ° or less on the same side as the first plane with respect to the second plane,
The orthodontic set according to claim 10, wherein the bracket has a slot having a rectangular cross-sectional shape with a width of 0.56 ± 0.02 mm or (0.56 ± 0.02 mm) × p. An orthodontic set comprising an orthodontic wire and a bracket for attaching the orthodontic wire,
The orthodontic wire is
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined by 7 ° or more and 20 ° or less with respect to the second plane,
The third plane is inclined by 7 ° or more and 20 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
The third part has a length that can be stretched over the entire front teeth of the patient's upper or lower jaw,
The bracket is
An orthodontic set comprising a slot having a rectangular cross-sectional shape having a width of 0.56 ± 0.05 mm or a slot having a rectangular cross-sectional shape having a width of (0.56 ± 0.05 mm) × p . The orthodontic wire is made of a stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.02 mm) × (0.64 ± 0.02 mm) or a wire made of a material other than the stainless steel,
The first plane is inclined at 10 ° to 17 ° with respect to the second plane,
The third plane is inclined by 10 ° or more and 17 ° or less on the same side as the first plane with respect to the second plane,
The orthodontic set according to claim 12, wherein the bracket has a slot having a rectangular cross-sectional shape with a width of 0.56 ± 0.02 mm or (0.56 ± 0.02 mm) × p. By bending four locations of a single stainless steel wire or a wire made of a material other than stainless steel,
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.41 ± 0.05 mm) × (0.56 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined at 12 ° or more and 25 ° or less with respect to the second plane,
The third plane is inclined at 12 ° or more and 25 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
A method for producing an orthodontic wire, characterized in that the orthodontic wire has a length that allows the third portion to be stretched over almost the entire anterior teeth of a patient's upper jaw or lower jaw. By bending four locations of a single stainless steel wire or a wire made of a material other than stainless steel,
From one end to the other end, it has a substantially straight first part, a substantially straight second part, a central arched third part, a substantially straight fourth part and a substantially straight fifth part, An overall arched stainless steel wire having a rectangular cross-sectional shape of (0.43 ± 0.05 mm) × (0.64 ± 0.05 mm) or a similarity ratio of 1 to the cross-sectional shape of this stainless steel wire : Having a cross-sectional shape similar to p (provided that 0.9 ≦ p ≦ 1.1), and made of a wire made of a material other than stainless steel having the same mechanical properties as this stainless steel wire,
The first part and the fifth part are located substantially in the first plane;
The second part and the fourth part are located substantially in the second plane;
The third part is located substantially in the third plane;
The long side of the rectangular cross section of the wire made of a material other than the stainless steel wire or the stainless steel is substantially parallel to the first plane, the second plane, and the third plane,
The first plane is inclined by 7 ° or more and 20 ° or less with respect to the second plane,
The third plane is inclined by 7 ° or more and 20 ° or less on the same side as the first plane with respect to the second plane,
The first part and the fifth part have a length that can be stretched over the first molar on the left or right side of the patient's upper or lower jaw,
The second part and the fourth part have a length that can be stretched over the first and second premolars on the left or right side of the patient's upper or lower jaw,
A method for producing an orthodontic wire, characterized in that the orthodontic wire has a length that allows the third portion to be stretched over almost the entire anterior teeth of a patient's upper jaw or lower jaw. A first arm having a jaw on the front end and a grip on the rear end;
A second arm having a jaw part at the front end and a grip handle on the rear end side;
The first arm and the second arm are connected to each other in an X shape by a connecting shaft so as to be rotatable around the connecting shaft,
On the surface of the jaw portion of the first arm facing the jaw portion of the second arm, a triangular columnar convex portion extending in the direction along the first arm is provided,
A triangular prism-shaped recess extending in a direction along the second arm is provided on a surface of the jaw of the second arm facing the jaw of the first arm,
The apex angle of the triangle in the cross section perpendicular to the longitudinal direction of the convex portion of the jaw portion of the first arm is 155 ° or more and 173 ° or less,
The apex angle of the triangle in the cross section perpendicular to the longitudinal direction of the concave portion of the jaw portion of the second arm is 155 ° or more and 173 ° or less,
When the first arm and the second arm are rotated around the connecting shaft to close the jaw portion of the first arm and the jaw portion of the second arm, the jaw of the first arm An orthodontic wire manufacturing pliers, wherein the convex part of the part and the concave part of the jaw part of the second arm are fitted together.