JP6601991B1 - Connecting member and orthodontic appliance set using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting member that is easy to use and enables a tooth movement mode close to or close to tooth movement. SOLUTION: A connecting member 13 for connecting an orthodontic wire 11 that pulls a tooth 20 and a pulling member 14 that pulls the wire 11, and the connecting member 13 can be pulled by the pulling member 14. The connecting member 13 has a flexible portion 13a. The connecting member 13 can be bent and extended by deformation of the flexible portion 13a. The connecting member 13 is extended in a state where no force is applied to the connecting member 13. The connection member 13 can be bent by applying a traction force by the traction member 14, or the connection member 13 is bent in a state where no force is applied to the connection member 13, and the traction force is applied by the traction member 14. The connecting member 13 can be extended, and when the connecting member 13 is bent or extended by applying a pulling force by the pulling member 14, the deformed flexible portion 13 a tries to return to the lip side. The connecting member 13 is characterized in that a resistance force against the inclination of the root 22 of the tooth is exerted. [Selection] Figure 1

Description

  The present invention relates to a connecting member and an orthodontic appliance set using the connecting member.

  As orthodontic appliances, a bracket that is fixed to a tooth and a wire that is inserted into the bracket to pull the tooth are widely used (Patent Document 1, etc.).

Japanese Patent No. 2797183

  Examples of the method (tooth movement mode) for moving teeth (tooth) for orthodontic correction include inclination movement and tooth body movement.

  Inclination movement is a method of changing the inclination angle of a tooth. In this method, for example, the position of the jawbone itself is normal (skeletal grade 1), but the upper teeth protrude too far forward (alveolar maxillary protrusion) due to the inclination angle of the teeth, or the lower teeth are Suitable for cases that are overprotruding (alveolar mandibular protrusion). FIG. 5 shows an example of tilt movement. In FIG. 5 (a), the crown (the tip portion of the tooth) of the upper incisor (first tooth) is inclined forward with respect to the root (the root portion of the tooth). Too much (on the lip side). Therefore, the crown of the upper incisor is tilted backward (to the lingual side) as indicated by an arrow Y1. Thereby, as shown in FIG.5 (b), it becomes a normal dentition. In addition, for example, in order to create a space for moving the front teeth backward, extraction of premolars may be performed as necessary.

  On the other hand, tooth movement does not substantially change the inclination angle of the tooth, and the tooth (dental tooth) is such that the moving distance between the crown (tooth tip part) and the tooth root (tooth root part) is substantially the same. ). In this method, for example, the case where the inclination angle of the tooth itself is normal, but the upper jaw itself is protruding forward, and the upper tooth is protruding excessively (skeletal second grade), or conversely Since the mandible is protruding forward, it is suitable for cases where the lower teeth are protruding excessively (skeletal grade 3). FIG. 6 shows an example of tooth body movement. In FIG. 6 (a), the upper teeth protrude too far forward (to the labial side) relative to the lower teeth because the upper jaw protrudes excessively forward with respect to the mandible. Therefore, the crown of the upper incisor is moved back (to the lingual side) (translated) as indicated by the arrow Y2. Thereby, as shown in FIG.6 (b), it becomes a normal dentition. In addition, for example, in order to create a space for moving the front teeth backward, extraction of premolars may be performed as necessary.

  Although there are many cases where tooth movement is required in daily clinical practice, it may be difficult to achieve well controlled tooth movement.

  Therefore, an object of the present invention is to provide a connecting member that is easy to use and enables tooth movement or a tooth movement mode close thereto, and an orthodontic appliance set using the connecting member.

In order to achieve the above object, the connecting member of the present invention comprises:
A connecting member for connecting an orthodontic wire for pulling teeth and a pull member for pulling the wires,
The connecting member can be pulled by the pulling member,
It said connecting member has a flexible portion, the connecting member by the deformation of the adjustable-flexure is bendable and extension,
In a state where no force is applied to the connection member, the connection member is extended, and the connection member can be bent by applying a traction force by the traction member, or
In a state where not apply force to the connecting member and the connecting member is bent, Ri said connecting member is extendible der by applying traction by the traction member,
When a traction force is applied by the traction member to bend or extend the connection member, the deformed flexible portion tries to return to its original state, and a resistance force against the inclination of the tooth root toward the lip side works. And

  The orthodontic appliance set of the present invention includes the connecting member of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, it is easy to use and the connection member which enables a tooth body movement or the tooth movement mode close | similar to it, and an orthodontic appliance set using the same can be provided. In the present invention, “tooth” is synonymous with “tooth”.

FIG. 1 is a side view showing an example of an orthodontic appliance set according to the present invention. FIG. 2 is a diagram showing an example in which the orthodontic appliance set of FIG. 1 is attached to the lingual side (inside of the teeth). FIG. 3 is a view showing an example in which the orthodontic appliance set of FIG. 1 is attached to the labial side (outside of the teeth). FIG. 4 is a side view showing another example of the orthodontic appliance set of the present invention. FIG. 5 is a side view showing an example of orthodontic correction by tilt movement of teeth. Fig.5 (a) is a figure which shows before orthodontic, FIG.5 (b) is a figure which shows after orthodontic. FIG. 6 is a side view showing an example of orthodontics by tooth body movement (parallel movement of teeth). Fig.6 (a) is a figure which shows before orthodontics, FIG.6 (b) is a figure which shows after orthodontics. FIG. 7 is a side view showing an example of a general orthodontic appliance set. FIG. 8 is a diagram showing an example in which the orthodontic appliance set of FIG. 7 is attached to the lingual side (inside of the teeth). FIG. 9 is a view showing an example in which the orthodontic appliance set of FIG. 7 is attached to the labial side (outside of the teeth). FIG. 10 is a side view showing another example of a general orthodontic appliance set.

  Next, the present invention will be described in more detail with reference to examples. However, the present invention is not limited by the following description.

  In the present invention, as described above, for example, the connection member extends in a state where no force is applied to the connection member, and the connection member can be bent by applying a traction force by the traction member. There may be. In this case, for example, the traction member may be able to return to the extended state by removing the traction force. Alternatively, in the present invention, as described above, for example, the connection member is bent in a state where no force is applied to the connection member, and the connection member is extended by applying a traction force by the traction member. It may be possible. In this case, for example, the traction member may be able to return to a bent state by removing the traction force. Thus, when the restoring force that the connecting member tries to return to works, for example, a tooth movement mode or a tooth movement mode close thereto is possible by the reaction of the force.

  For example, the connecting member of the present invention may be capable of pulling the connecting member at a position lower than the resistance center of the tooth to be pulled in a state where a pulling force is applied by the pulling member.

In the connection member of the present invention, for example, the connection member is extended in a state where no force is applied to the connection member, and the connection member can be bent by applying a traction force by the traction member. in extended state, the height of the portion to apply traction by the traction member may be substantially the same as the resistance center of the tooth to be towed by the wire.

Connecting member of the present invention, for example, the friendly flexures is a torsion spring (also referred to as a torsion coil spring) may have a structure.

  The orthodontic appliance set of the present invention further includes, for example, an orthodontic bracket including an orthodontic bracket, the orthodontic wire, the traction member, and a traction member fixing member for fixing the traction member. It may be an instrument set. The traction member fixing member may be at least one selected from the group consisting of, for example, an implant, a bracket, a tube, and a transparatal arch.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following examples. Also, each drawing is schematically drawn with omission, exaggeration, etc. as appropriate for convenience of explanation.

  Prior to the description of the connecting member of this embodiment and the orthodontic appliance set using the connecting member, first, an example of a general orthodontic appliance and a method of using the orthodontic appliance will be described with reference to FIGS.

  As a method of attaching the orthodontic appliance for moving the tooth body, for example, the methods shown in FIGS. FIG. 7 is a side view showing the orthodontic appliance set attached to the teeth and jawbone. In FIG. 7, for simplification of illustration, the illustration of the jawbone is omitted, and the illustration is omitted except for one tooth. As illustrated, the orthodontic appliance set 10B includes an orthodontic wire (hereinafter sometimes simply referred to as “wire”) 11 and an orthodontic bracket (hereinafter simply referred to as “bracket”). ) 12, an orthodontic appliance set including a hook 13B, a coil 14, and an implant 15. The hook 13B can be fixed to the wire 11 at one end 13Bb. On the other hand, the other end 13 </ b> Bc of the hook 13 </ b> B has a hook shape (hook shape) capable of hooking one end of the coil 14 as illustrated. The tooth 20 includes a crown (a tip portion of the tooth) 21 and a root (a root portion of the tooth) 22. Reference numeral 23 denotes a resistance center of the tooth 20. The resistance center 23 is generally located at a height (length) of about ½ of the root length (length in the vertical direction of the root 22). As illustrated, the bracket 12 is fixed to the crown 21 and the wire 11 is attached (inserted) to the bracket 12. On the other hand, one end 13Bb of the hook 13B is fixed substantially perpendicular to the wire 11 as shown. Furthermore, one end of the coil 14 is hooked on the hook-shaped portion 13Bc at the other end of the hook 13B as shown in the figure. Thereby, as illustrated, the wire 11 and the coil 14 can be connected via the hook 13B. In this state, as shown in the figure, the hook-shaped portion 13Bc of the hook 13B is located at substantially the same height as the resistance center 23 of the tooth. Further, as shown in the figure, the end of the coil 14 opposite to the hook 13B is fixed to the jawbone by the implant 15 at substantially the same height as the resistance center 23 of the tooth. Thereby, the tooth 20 is pulled with a force applied backward (to the lingual side) via the implant 15, the coil 14, the hook 13 </ b> B, the wire 11, and the bracket 12. In the state of FIG. 7, the tooth 20 is pulled by the crown via the bracket 12 and is pulled by applying a force at substantially the same height as the resistance center 23 via the hook 13 </ b> B. For this reason, the tooth body movement (parallel movement) of the tooth 20 becomes possible. In FIG. 7, the bracket 12 and the wire 11 are attached to the outside (lip side) of the tooth 20, but can be attached to the inside (tongue side) of the tooth 20. 8 and 9 are examples in which an orthodontic appliance set 10B similar to that of FIG. 7 is attached to teeth and jawbone, and the jawbone and other teeth are illustrated. FIG. 8 is an example in which the bracket 12 and the wire 11 are attached to the inside (the lingual side) of the tooth 20. FIG. 9 shows an example in which the bracket 12 and the wire 11 are attached to the outside (lip side) of the teeth 20. The crown can be pulled by a bracket and a wire, but the root cannot be pulled directly because it is buried in the alveolar bone, so it is indirectly pulled using a hook or the like as shown in FIGS. It will be.

  However, as shown in FIGS. 7-9, fixing the implant 15 to the jawbone at approximately the same height as the resistance center 23 of the teeth is extremely difficult or impossible in some cases. For example, in lingual correction, if the patient's palatal ceiling is low, the implant 15 cannot be fixed to the jawbone at almost the same height as the resistance center 23 of the tooth. On the lip side, depending on the position of the movable mucous membrane, the implant 15 may not be embedded at substantially the same height as the resistance center 23 of the tooth. In this case, the tooth body moves, but the teeth are pulled out to the crown side (upwardly in the case of the upper tooth, obliquely upward in the case of the lower tooth), and the tooth is crushed. . Therefore, this method is not suitable for a case where there is no problem in the depth of the front tooth cover and a case where the overlid is occluded.

Therefore, in such a case, as shown in FIG. 10, the tooth is pulled at a position lower than the resistance center. The orthodontic appliance set 10C shown in FIG. 10 has the hook 13C instead of the hook 13B and the orthodontic appliance set 10B shown in FIGS. 7 to 9 except that the length of the hook 13C is shorter than the hook 13B. The same. One end 13Cb of the hook 13C is the same as the one end 13Bb of the hook 13B in FIGS. 7 to 9, and the other end 13Cc of the hook 13C is the same as the other end 13Bc of the hook 13B in FIGS. As illustrated, since the length of the hook 13C is short, the implant 15 is fixed to the jawbone at a position lower than the resistance center of the tooth according to the length of the hook 13C. The teeth 20 are pulled at a position lower than the resistance center 23 via the hooks 13C. As a result, in the case of FIG. 10, the crown 21 is likely to be inclined and pulled behind the root 22. In this way, the root 22 easily moves to the outside (lip side) opposite to the pulling direction. In spite of the normal inclination angle of the teeth, when the roots move to the lips in this way, for example, the roots collide with the labial cortical bone (the hardest bone outside the gums), and the following (1) There is a possibility that the problem (3) will occur.

(1) The backward movement of the front teeth stops.
(2) The root resorption (the tooth root gradually becomes shorter) occurs in the tooth root colliding with the cortical bone.
(3) The root is exposed through the cortical bone.

  Thus, it is very difficult to achieve fully controlled tooth movement when pulling teeth at a position below the resistance center. However, according to the present invention, for example, even when the tooth is pulled at a position lower than the resistance center, a sufficiently controlled tooth body movement or a tooth movement mode close thereto is possible. In a present Example, an example of such a connection member of this invention, an orthodontic appliance set using the same, and an example of how to use them are shown.

  In FIG. 1, an example of the connection member of a present Example and an example of an orthodontic appliance set using the same are shown. The figure is a side view showing a state in which the orthodontic appliance set is attached to the teeth and jawbone. In FIG. 1, for simplification of illustration, the jawbone is not shown, and one tooth is omitted except for one tooth. As illustrated, the orthodontic appliance set 10 includes an orthodontic wire (hereinafter sometimes simply referred to as “wire”) 11 and an orthodontic bracket (hereinafter simply referred to as “bracket”). ) 12, a hook (connection member) 13, a coil (traction member) 14, and an implant (traction member fixing member) 15. The tooth 20 is composed of a crown (tooth tip portion) 21 and a tooth root (tooth root portion) 22, and 23 represents the resistance center of the tooth 20.

The hook 13 corresponds to the connecting member of the present invention. As illustrated, the hook 13, the position of the middle thereof, has a flexible portion 13a. Flexible portion 13a is a torsion spring (torsion coil spring) structure, thereby, the hook 13 at the flexible portion 13a is bendable and extension. More specifically, in a state where no force is applied to the hook 13, the hook 13 extends as shown by a dotted line in the figure. On the other hand, by applying a traction force to the hook 13 by the coil 14, the hook 13 can be bent as shown by the solid line in the figure. The hook 13 can be fixed to the wire 11 at one end 13b. On the other hand, the other end 13c of the hook 13 has a hook shape (hook shape) on which one end of the coil 14 can be hooked as shown in the figure.

  As illustrated, the bracket 12 is fixed to the crown 21 and the wire 11 is attached (inserted) to the bracket 12. On the other hand, one end 13b of the hook 13 is fixed substantially perpendicular to the wire 11 as shown. On the other hand, one end of the coil 14 is hooked on the hook-shaped portion 13c at the other end of the hook 13 as shown in the figure. Thereby, the wire 11 and the coil 14 can be connected via the hook 13 as shown in the figure. As described above, when no force is applied to the hook 13, the hook 13 extends as shown by the dotted line in the figure. On the other hand, by applying a traction force to the hook 13 by the coil 14, the hook 13 can be bent in the traction direction as indicated by an arrow X1 as indicated by a solid line in the figure. In the state in which the hook 13 is extended, the hook-shaped portion 13c of the hook 13 is positioned at substantially the same height as the resistance center 23 of the tooth as shown in the drawing.

Further, as shown in the drawing, the end of the coil 14 opposite to the hook 13 is fixed to the jawbone by the implant 15 at a height lower than the tooth resistance center 23 (closer to the crown side). As a result, the teeth 20 are pulled with a force applied backward (to the lingual side) via the implant 15, the coil 14, the hook 13, the wire 11, and the bracket 12. In the state of FIG. 1, the tooth 20 is pulled by the crown via the bracket 12 and is pulled by applying a force via the hook 13. In this case, the hook 13 is towed at a lower position than the center of resistance 23, by a coil spring structure of the flexible portion 13a, a force which the hook 13 is to return to the original. The force that the deformed flexible portion and the connecting member attempt to return to the original is referred to as “spring back” in the present invention. This spring-back effect, tooth root 22, the resistance force against the inclined obliquely to the labial increases. For this reason, in FIG. 1, tooth body movement (parallel movement) of the tooth 20 or movement close thereto is possible. In addition, in FIG. 1, although the bracket 12 and the wire 11 are attached to the outer side (lip side) of the tooth | gear 20, it is also possible to attach to the inner side (tongue side) of the tooth | gear 20. FIG. 2 and 3 are examples in which an orthodontic appliance set 10 similar to that shown in FIG. 1 is attached to teeth and jaw bones, and the jaw bones and other teeth are illustrated. FIG. 2 is an example in which the bracket 12 and the wire 11 are attached to the inner side (lingual side) of the tooth 20. FIG. 3 is an example in which the bracket 12 and the wire 11 are attached to the outside (lip side) of the teeth 20.

A hook 13, as described above, has a spring structure flexible portion 13a torsion, thereby, as described above, when no force is applied to the hook 13 has a hook 13 is extended, the traction force on the hook 13 Is added, the hook 13 can be bent. Although the material of the hook 13 is not specifically limited, For example, it may be the same as a hook of a general orthodontic appliance, or may be the same as a general torsion spring (torsion coil spring). Specifically, the material of the hook 13 is, for example, metal. Examples of the metal include nickel titanium, stainless steel, rubber metal, and the like.

Further, in FIG. 1, the connecting member is shown an example having a flexible portion torsion spring structure (hook 13), the connecting member of the present invention is not limited thereto. For example, flexible portion of the connecting member may be a flexible section having a hinge structure or the like. In the connection member of the present invention, for example, as in this embodiment (FIGS. 1 to 3), the connection member is extended in a state where no force is applied to the connection member, and a traction force is applied by the traction member. The connecting member may be bendable. Alternatively, in the connection member of the present invention, for example, as in Example 2 described later, the connection member is bent in a state where no force is applied to the connection member, and the connection member is applied by applying a traction force by the traction member. The member may be extensible. Thereby, for example, as described above, the force that the connecting member tries to return to the traction force by the traction member works. Due to the force (spring back) that the deformed flexible portion and the connecting member return to the original state , the tooth body moves or moves close to it as described above.

  Moreover, in FIG. 1, although the hook 13 was illustrated as a connection member of this invention, the connection member of this invention is not limited to this. Specifically, for example, in the connection member 13, the shape of the end 13 c on the side to be fixed to the traction member 14 is not limited to the hook shape, but may be other shapes that can be hooked and fixed to the traction member 14. There may be. In 13c, other shapes that can be fixed by hooking the pulling member 14 include, for example, a button shape, a protrusion shape, and the like.

  In the orthodontic appliance set of the present invention, members other than the connection member of the present invention are not particularly limited, and may be the same as, for example, a member of a general orthodontic appliance set. For example, in FIGS. 1 to 3, the wire 11 may be the same as a general orthodontic wire. For example, if a shape memory wire is used as the wire 11, it is possible to correct the dentition with a force that the wire tries to return straight. The bracket 12 may be the same as a general orthodontic bracket. Although the pulling member 14 is a coil in 14, it is not limited to this, For example, an elastic etc. may be sufficient. The implant 15 may be the same as a general orthodontic implant, and may be, for example, an implant that is fixed to the jaw bone by inserting a screw (also referred to as an anchor screw) into the jaw bone. Moreover, although the example which uses an implant as a traction member fixing member was shown in the present Example, this invention is not limited to this. For example, the pulling member fixing member may be a bracket, a tube, a transparatal arch, or the like. These brackets, tubes, transparatal arches, and the like may be the same as, for example, general orthodontic brackets, tubes, transparal arches, and the like. The bracket as the pulling member fixing member may be, for example, a bracket attached to a back tooth and a bracket capable of fixing the pulling member. Further, the tube as the pulling member fixing member may be, for example, the whole or a part of a bracket attached to the back teeth, and the tube capable of fixing the pulling member.

  Although the application example of the connection member and orthodontic appliance set of the present invention is not particularly limited, it is suitable, for example, for a skeletal maxillary protrusion case (a skeletal second-order maxillary protrusion case). In this case, the tooth axis inclination angle of the maxillary anterior teeth is not inclined on the labial side, and an excessive overjet occurs due to the longitudinal difference between the maxilla and mandible. In such a case, the above-described problems (1) to (3) may occur if the movement is inclined, but according to the present invention, such a problem can be suppressed or prevented. In addition, an overjet means the space | interval of the front and back of an upper front tooth and a lower front tooth, and is generally about 2-3 mm. For the same reason, the connecting member and the orthodontic appliance set of the present invention are also suitable for, for example, a skeletal mandibular case (skeletal third grade mandibular case).

  Moreover, when using the connecting member and orthodontic appliance set of the present invention, a method used in general orthodontics may be appropriately applied. For example, in order to make a space for moving the front teeth backward, extraction of premolars may be performed as necessary.

  Tooth movement is one of the most difficult modes of orthodontic treatment. Theoretically, even if a tooth is pulled by a mechanism that results in tooth movement, it is often inclined. According to the present invention, for example, such a problem is suppressed or prevented, and a more reliable tooth body movement mode or a tooth movement mode close thereto is possible.

  Next, another embodiment of the present invention will be described.

  FIG. 4 shows another example of the connecting member of the present invention and an orthodontic appliance set using the connecting member. The figure is a side view showing a state in which the orthodontic appliance set is attached to the teeth and jawbone. As shown in the figure, this orthodontic appliance set 10 </ b> A is the same as the orthodontic appliance set 10 of FIGS. 1 to 3 except that it has a hook (connection member) 13 </ b> A instead of the hook (connection member) 13.

The hook 13A corresponds to the connecting member of the present invention. The hook 13A is shorter than the hook 13 of FIGS. As illustrated, the hook 13, the position of the middle thereof, has a flexible portion 13Aa. Flexible portion 13Aa is a torsion spring (torsion coil spring) structure, thereby, the hook 13A with flexible portion 13Aa is bendable and extension. More specifically, in a state where no force is applied to the hook 13A, the hook 13A is bent in the direction of the teeth as indicated by the dotted line in the figure. On the other hand, by applying a traction force to the hook 13A by the coil 14, the hook 13A can be extended as shown by the solid line in the figure. The hook 13A can be fixed to the wire 11 at one end 13Ab. On the other hand, the other end 13Ac of the hook 13A has a hook shape (hook shape) on which one end of the coil 14 can be hooked as shown in the figure. Except for these, the hook 13A may be the same as the hook 13 of the first embodiment (FIGS. 1 to 3), for example.

  As illustrated, the bracket 12 is fixed to the crown 21 and the wire 11 is attached (inserted) to the bracket 12. On the other hand, one end 13Ab of the hook 13A is fixed substantially perpendicular to the wire 11 as shown. On the other hand, one end of the coil 14 is hooked on the hook-shaped portion 13Ac on the other end of the hook 13A as shown in the figure. Thereby, as illustrated, the wire 11 and the coil 14 can be connected via the hook 13A. As described above, in a state where no force is applied to the hook 13A, the hook 13A is bent in the direction of the teeth as indicated by the dotted line in the figure. On the other hand, by applying a pulling force to the hook 13A by the coil 14, the hook 13A can be extended in the pulling direction as shown by the arrow X2 as shown by the solid line in the figure. In the state where the hook 13A is extended, the hook-shaped portion of the hook 13A is positioned at a height lower than the tooth resistance center 23 (closer to the crown side) as shown in the figure.

Furthermore, as shown in the figure, the end of the coil 14 opposite to the hook 13A is lower than the resistance center 23 of the tooth (close to the crown side) by the implant 15 and slightly higher than the hook-shaped portion of the hook 13A. In position, fix to the jawbone. Thereby, the tooth 20 is pulled with a force applied backward (to the lingual side) via the implant 15, the coil 14, the hook 13 </ b> A, the wire 11, and the bracket 12. In the state of FIG. 4, the tooth 20 is pulled by the crown through the bracket 12 and is pulled by applying a force through the hook 13 </ b> A. In this case, the hook 13A is towed at a lower position than the center of resistance 23, by a coil spring structure of the flexible portion 13Aa, the force which the hook 13A is to return to the original is rather work. Therefore, the root 22, the force which the hook 13A is to return to the original (spring back) acts. With this springback effect and the traction force of the coil 14, while the teeth 20 are lifted in the root direction (in the case where the teeth 20 are the lower teeth, they are pushed down in the root direction), the tooth body moves backward (to the lingual side) ( Parallel movement) or close to it. It should be noted that applying a force to lift or push down the tooth in the direction of the root is referred to as “reduction”. Since the direction of reduction is opposite to tooth extraction (tooth extension), according to this embodiment, tooth extraction can be suppressed or prevented. That is, according to the present embodiment, tooth extrusion is suppressed or prevented by the reduction, and tooth movement or a tooth movement mode close thereto is possible.

  In addition, although the usage method of hook (connection member) 13A and orthodontic appliance set 10A of a present Example is not specifically limited, it may be the same as that of hook (connection member) 13 and orthodontic appliance set 10 of Example 1. . For example, when the orthodontic appliance set 10A of the present embodiment is applied to the inner side (lingual side) of the tooth 20, it may be the same as FIG. 2, and when applied to the outer side (lip side) of the tooth 20, FIG. It may be the same as 3.

  In FIG. 4, the implant 15 is fixed to the jawbone at a position lower than the tooth resistance center 23 (closer to the crown side). However, in this embodiment, the fixing position of the implant 15 is not limited to this, and may be the same height as the tooth resistance center 23 or a position higher than the tooth resistance center 23. For example, the implant 15 is fixed to the jawbone at a position higher than the hook-shaped portion of the hook 13A in the same manner as in FIG. 4, thereby suppressing or preventing tooth protrusion by reduction as in FIG. Body movement or tooth movement modes close to it are possible.

  Further, in the connection member 13A, the shape of the end 13Ac on the side fixed to the traction member 14 is not limited to the hook shape as in the first embodiment, and other shapes that can be fixed by hooking the traction member 14 are also possible. The shape (for example, button shape, protrusion shape, etc.) may be sufficient.

  Further, in the orthodontic appliance set 10A of the present embodiment, members other than the hook 13A are not particularly limited, and may be the same as, for example, a member of a general orthodontic appliance set as in the first embodiment. For example, the wire 11, the bracket 12, and the traction member 14 may be the same as a general orthodontic wire, bracket, and traction member. Further, the implant 15 may be the same as a general orthodontic implant, or a bracket, a tube, a transparatal arch, or the like may be used instead of the implant 15.

  As described above, according to the present invention, it is possible to provide a connecting member that is easy to use and enables tooth movement or a tooth movement mode close thereto, and an orthodontic appliance set using the connection member. The connecting member and orthodontic appliance set of the present invention can be used in a wide range of applications similar to general orthodontic appliances and can solve the above-mentioned problems in general orthodontic appliances. The utility value is great.

  Furthermore, the present invention is not limited to the above-described embodiments, and can be arbitrarily combined, modified, or selected and adopted as necessary without departing from the spirit of the present invention. Is.

10, 10A, 10B, 10C Orthodontic appliance set 11 Wire (orthodontic wire)
12 Bracket (orthodontic wire)
13, 13A, 13B, 13C Hook (connection member)
13a, flexible portion 13b of the 13Aa hook (connecting member), 13Ab, 13Bb, the 13Cb hook (connecting member), an end 13c of the side to be fixed to the wire 11, 13Ac, 13bc, 13Cc hooks (connecting member), a coil ( End 14 on the side to be fixed to the traction member 14 Coil (traction member)
15 Implant (traction member fixing member)
20 teeth (tooth)
21 Crown 22 Tooth root 23 Resistance center Y1, Y2 of tooth 20 Arrow X1 representing the moving direction of tooth 20 Arrow X2 representing the direction in which force is applied to hook 13 Arrow representing the direction in which force is applied to hook 13a

Claims (7)

A connecting member for connecting an orthodontic wire for pulling teeth and a pull member for pulling the wires,
The connecting member can be pulled by the pulling member,
It said connecting member has a flexible portion, the connecting member by the deformation of the adjustable-flexure is bendable and extension,
In a state where no force is applied to the connection member, the connection member is extended, and the connection member can be bent by applying a traction force by the traction member, or
In a state where not apply force to the connecting member and the connecting member is bent, Ri said connecting member is extendible der by applying traction by the traction member,
When a traction force is applied by the traction member to bend or extend the connection member, the deformed flexible portion tries to return to its original state, and a resistance force against the inclination of the tooth root toward the lip side works. A connecting member.   The connection member according to claim 1, wherein the connection member can be pulled at a position lower than a resistance center of a tooth to be pulled in a state where a pulling force is applied by the pulling member. In a state where no force is applied to the connection member, the connection member is extended, and the connection member can be bent by applying a traction force by the traction member,
In a state in which the connecting member is extended, the height of the portion to apply traction by the traction member, the connection member according to claim 1 or 2, wherein substantially the same as the center of resistance of the tooth to be towed by the wire. Connecting member, wherein the Allowed flexure is in any one of claims 1 a torsion spring structure 3.   An orthodontic appliance set including the connecting member according to any one of claims 1 to 4.   The orthodontic appliance set according to claim 5, further comprising an orthodontic bracket, the orthodontic wire, the traction member, and a traction member fixing member for fixing the traction member.   The orthodontic appliance set according to claim 6, wherein the pulling member fixing member is at least one selected from the group consisting of an implant, a bracket, a tube, and a transparatal arch.

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