JP2016198503A - Orthodontic wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate work for adjusting an orthodontic wire by bending the wire into a desired shape fitting the purpose of orthodontics.SOLUTION: In a chevron-shaped orthodontic wire 1 for being incorporated into a bracket B fixed to a tongue-side surface of teeth T, two or more tooth brackets are connected as one group by a straight line 11, and a bent corner part 10 is arranged between the straight lines of the respective adjacent groups to constitute a chevron shape.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a metal orthodontic wire for correcting tooth alignment by connecting to a bracket fixed to the back side of a tooth.

  In order to correct irregular teeth, a metal orthodontic wire is connected to a bracket fixed on the back side (lingual side) of the tooth, and the moving or rotating tension is applied to each tooth by the restoring force of the wire. A dental technique for realizing a desired dentition is known (for example, Patent Documents 1 and 2).

  In the dental technique, the teeth are pressed, pulled back and rotated by the restoring force of the wire so that each tooth moves to each position of the target dentition after correction. Therefore, it is necessary to construct a wire in a shape that can be connected to a bracket fixed to the back side of each model tooth of a set-up model, which is a tooth model created by virtually creating a target dentition after correction. That is, in the target dentition after correction, the wire maintains no original shape without any tension applied, but this wire is fixed to the back side of each tooth in the dentition before correction of the patient. When the wire is connected to the wire, the wire is deformed, and the tooth is pressed, pulled back, and rotated by applying a tension in the moving direction or the rotating direction to each tooth by a restoring force for maintaining the original shape.

  The set-up model is obtained by cutting each model tooth from a tooth profile model created based on a tooth profile impression collected from a patient and rearranging the target dentition after correction, virtually. The wire is bent into a shape along the back of the row.

  As described above, the wire is fixed to the bracket fixed to the back side of the patient's teeth, and a desired dentition is realized by applying tension in the moving direction or rotating direction to each tooth by restoring force. In order to do this, the shape along the back side of the dentition had to be made, and the following two types were known.

  Part 1 is an arch-shaped wire in which the molar part is linear and the front tooth part is curved, as disclosed in Patent Document 1, for example, and No. 2 is that the molar part is linear and the front tooth part is curved. However, it is a mushroom-shaped wire in which the distance between the canine and the premolar is offset along the curve formed by the back surface of the tooth, as disclosed in Patent Document 2, for example.

Japanese Patent No. 5466121 Japanese Patent No. 3118213

  The orthodontic wire has a curved shape at the front tooth portion including left and right middle incisors, side incisors, and canines because the shape formed by the back surfaces thereof is a curved shape.

  By the way, during orthodontic treatment, the teeth are pressed, pulled back, and rotated by the restoring force of the wire so that each tooth moves to each position of the target dentition after correction. It is not realized at once, and the action proceeds in stages over time. Therefore, the dentist must regularly examine the wire after applying it to the patient's teeth, and adjust the wire thickness or shape according to the movement of each tooth.

  In this case, whether to recreate a wire with a different thickness or to recreate a wire with a slightly different shape, the work was very difficult, requiring a wealth of experience, intuition, and a long time.

  On the other hand, during long-term orthodontic treatment, the patient will have a foreign object called a wire on the back of the tooth, so it is desirable to prevent it from protruding from the teeth as much as possible so that it does not interfere with meals and vocalization. . However, since the wire of the prior art has a curved shape at the front tooth portion, the arc constituting the curve protrudes more than necessary on the tooth side between the brackets fixed on the back side of the tooth so that it does not hit the tooth. As a result of retreating the bracket to the lingual side, there is a problem that the protrusion of the wire from the tooth becomes large.

  An object of the present invention is to solve the above-mentioned problems, and in an angle-shaped orthodontic wire incorporated in a bracket in which an orthodontic wire is fixed to the lingual side of a tooth, two or more teeth are provided. The brackets are connected by a straight line as one group, and a mountain shape is formed by arranging a bent corner portion between the straight lines of adjacent groups.

  In the invention according to claim 2, in the orthodontic wire, the bracket fixed to each of the left and right central incisors is fixed to each of the front first group, the left side incisor and the canine. Left first group, left premolar teeth, molar brackets fixed to the left second group, right side incisors and canines fixed brackets to the right first group, right The bracket fixed to each of the premolars and molars is the second group on the right side, the brackets between each group are connected with straight lines, and the angled portion is arranged between the straight lines of each adjacent group to form a chevron It is characterized by comprising.

  According to a third aspect of the present invention, in the orthodontic wire, brackets fixed to the left central incisor and the side incisor, respectively, the left first group, the left canine, premolar, molar Brackets fixed to each of the left group 2 and brackets fixed to the right central incisor and lateral incisors are fixed to the right first group, right canine, premolar and molar, respectively. These brackets are made into a second group on the right side, brackets between the groups are connected by straight lines, and a corner is formed by arranging a bent corner between the straight lines of adjacent groups.

  According to the orthodontic wire of the present invention having the above-described configuration, since two or more tooth brackets are connected by a straight line as one group, and a bending angle portion is arranged between the straight lines of adjacent groups, the wire During the adjustment work to change the thickness or shape of the arm, this bend corner becomes the reference point of the shape, that is, a clue, so work can be done in a short time based on objective values without relying on experience and intuition. It becomes possible. On the other hand, since the wire of a prior art is a curved shape, it could not have such a reference point.

  Further, since the wire is linear between the two teeth at the front tooth portion, the arc constituting the curve does not protrude more than necessary on the tooth side unlike the conventional wire, and the wire protrudes from the tooth. Can be reduced as much as possible.

  According to the orthodontic wire of the present invention having the above-described configuration, not only the work of bending and adjusting the wire into a desired shape suitable for the purpose of correction is facilitated, but also during a long-term correction treatment. This prevents the wire from feeling uncomfortable for the patient.

The top view of 1st Example of the orthodontic wire of this invention. The top view which shows a usage method same as the above. The top view which shows a usage method same as the above. The top view of 2nd Example of the orthodontic wire of this invention. The top view which shows a usage method same as the above. The top view which shows a usage method same as the above.

  FIGS. 1-3 is a figure which shows 1st Example of the orthodontic wire of this invention. In the figure, the symbol T is a tooth.

  Reference numeral 1 in the figure denotes an orthodontic wire, which is obtained by bending a known material such as a metal wire having a restoring force into a desired shape.

  In this embodiment, brackets B fixed to the left central incisor L1 and side incisor L2 are connected to the left first group, left canine L3, premolar L4-L5, and molar L6-L7. Brackets fixed to the left second group, brackets R fixed to the right central incisor R1 and side incisors R2, respectively, right first group, right canine R3, premolar R4-R5, The bracket R fixed to each of the molars R6-R7 is a second group on the right side, the brackets between the groups are connected by straight lines 11, and the bending angle portion 10 is arranged between the straight lines of the adjacent groups. The orthodontic wire 1 is a mold.

  FIGS. 4-6 is a figure which shows 2nd Example of the orthodontic wire of this invention. In the figure, the symbol T is a tooth.

  In this embodiment, the bracket B fixed to each of the left and right middle incisors L1-R1 is a front first group, and the bracket fixed to each of the left side incisors L2 and canines L3 is a left first group. , Brackets fixed to the left premolars L4-L5 and molars L6-L7, respectively, to the left second group, brackets fixed to the right side incisors R2 and canine teeth R3, respectively, to the right first group The bracket fixed to each of the right premolars R4-R5 and the molars R6-R7 is the second group on the right, and the brackets between the groups are connected by straight lines 21 and bent between the straight lines of the adjacent groups. By arranging the corner portion 20, the orthodontic wire 2 is formed in a mountain shape.

B Bracket T Teeth 1 Wire of the first embodiment 10 Bending angle portion of the wire of the first embodiment 11 Straight line of the wire of the first embodiment 2 Wire of the second embodiment 20 Bending angle portion of the wire of the second embodiment 21 Wire straight line of the second embodiment

Claims (3)

In a chevron-shaped orthodontic wire incorporated in a bracket fixed to the lingual side of a tooth, two or more tooth brackets are connected in a straight line, and a bent corner is placed between the adjacent straight lines in each group. An orthodontic wire characterized in that a chevron is formed. Brackets fixed to the left central incisor and lateral incisors respectively in the left first group, brackets fixed to the left canine, premolar and molar teeth in the left second group, right middle The bracket fixed to each of the incisor and side incisor is the first group on the right, the bracket fixed to each of the right canine, premolar and molar is the second group on the right, and the bracket between each group is straight The orthodontic wire according to claim 1, wherein the orthodontic wire is formed in a mountain shape by tying together with a bend angle portion between straight lines of adjacent groups. Brackets fixed to the left and right central incisors are attached to the front first group, left side incisors and canines to the left first group, left premolars, and molars, respectively. Fixed brackets to the left second group, right side incisors and canines fixed brackets to the right first group, right premolars and molars to the right second group The orthodontic wire according to claim 1, wherein the orthodontic wire is formed into a group, and a mountain shape is formed by connecting brackets between the groups with straight lines and arranging a bent corner portion between the straight lines of adjacent groups.

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