JP2005237658A - Orthodontic force applying member, and orthodontic mechanism using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an orthodontic force applying member by which force to be loaded on teeth via a bracket is easily adjusted, which has excellent corrosion resistance and is compact, where both of attraction and repulsion of a magnet can be utilized, and by which systematic orthodontics matching the state of a patient is easily carried out, and an orthodontic mechanism using the member. <P>SOLUTION: The orthodontic force applying member consists of a corrosion resistant case and a bar magnet sealed and housed in the corrosion resistant case. The corrosion resistant case is provided with a main wire insertion part for orthodontics in parallel to the bar magnet. The orthodontic mechanism is obtained by inserting and arranging the orthodontic force applying member so that the same poles or different poles oppose to each other so as to apply orthodontic force to the teeth through the bracket. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an orthodontic force imparting member using a permanent magnet (hereinafter referred to as a magnet) used in a so-called bracket type orthodontic apparatus and an orthodontic mechanism using the same.

  An orthodontic apparatus that uses the spring force of an elastic body for orthodontic correction is widely used. Since this device moves a tooth by a spring force, there is a problem in that the greatest force is applied to the tooth at the initial stage of orthodontic treatment, causing discomfort to the patient. There is also a problem that it is difficult to adjust the spring force and it is difficult to give a required correction force to the teeth. The thing using a magnet with respect to these problems is examined. For example, Patent Document 1 or Patent Document 2 proposes an orthodontic apparatus using a magnet.

  In Patent Document 1, an orthodontic apparatus using a magnet having a hole extending in the axial direction through a symmetrical center and having a magnet and a protective coating surrounding the hole and slidably disposed on the wire Has been proposed. In patent document 2, the orthodontic apparatus using the magnet which has the projection part for fixing a magnet to a bracket, and the sliding part which can be slidably fitted with a wire, and has a rust prevention process layer, such as Ni plating Has been proposed.

JP 05-338872 A JP 2001-104342 A

  However, in the orthodontic apparatus according to the proposals of Patent Documents 1 and 2, it is not easy to adjust the force applied to the tooth through the bracket, and only a rust prevention treatment layer such as plating is provided. There is a problem that the corrosion resistance of is insufficient. Further, the orthodontic mechanism according to the proposal of Patent Document 1 has a problem that it can be used only when the repulsive force of the magnet is used, and the magnet used in the orthodontic apparatus proposed in Patent Document 2 is highly sophisticated. Therefore, there is a problem that it is disadvantageous in terms of cost.

  In view of such conventional problems, the present invention can easily adjust the force applied to the tooth through the bracket, is excellent in corrosion resistance, is compact, and can use both the pulling force and the repulsive force of the magnet. An object of the present invention is to propose an orthodontic force imparting member that facilitates systematic orthodontic treatment according to the patient's condition and an orthodontic mechanism using the orthodontic force imparting member.

  The orthodontic main line insertion portion of the orthodontic force imparting member according to the present invention includes a corrosion-resistant case and a bar magnet hermetically housed in the corrosion-resistant case, and the corrosion-resistant case has teeth parallel to the bar magnet. A main line insertion portion for column correction is provided. It is preferable to have an accommodating part in which a plurality of bar magnets are disposed around the orthodontic main line insertion part.

  The orthodontic main line insertion portion of the corrosion-resistant case of the orthodontic force imparting member is preferably a central hole penetrating the corrosion-resistant case or a concave groove extending to a side portion of the corrosion-resistant case.

  Further, the corrosion resistant case preferably has an accommodating portion in which a plurality of bar magnets are disposed around the orthodontic main line insertion portion, and the corrosion resistant case is provided with a display of residual magnetism. Is preferred. Further, the corrosion resistant case is preferably provided with a ligation portion, and the bar magnet sealed and accommodated in the corrosion resistant case is preferably made of a neodymium magnet.

  The orthodontic mechanism using the orthodontic force imparting member is formed by inserting one of the orthodontic force imparting members described above into the orthodontic main line so that the same polarity or different polarity faces each other. It gives corrective power to the teeth.

  The orthodontic force imparting member according to the present invention can easily adjust the force applied to the tooth through the bracket, is excellent in corrosion resistance, is compact and easy to manufacture, and utilizes both the pulling force and the repulsive force of the magnet. be able to. In addition, orthodontic correction can be performed efficiently and systematically by an orthodontic mechanism using this orthodontic force imparting member.

  An orthodontic force imparting member according to an embodiment of the present invention is shown in FIG. As shown in FIG. 1, the orthodontic force imparting member 10 includes a corrosion resistant case 11 and a bar magnet 30 hermetically housed in the corrosion resistant case 11.

  The corrosion-resistant case 11 includes a case body 12 and a sealing lid 20, and the corrosion-resistant case 11 is provided with an accommodating portion 15 for the bar magnet 30 and an orthodontic main line insertion portion 13 in parallel therewith. The orthodontic force imparting member 10 is disposed between the brackets 40 so as to be slidable along the orthodontic main line 50 through the orthodontic main line insertion portion 13. As a result, the pair of orthodontic force imparting members 10 can be directly opposed, and the corrective force can be effectively applied to the teeth to be corrected.

  The orthodontic main line insertion portion 13 corresponds to the central hole 131 that penetrates the cylindrical corrosion-resistant case 11 in the axial direction. Further, as shown in FIG. 2, a concave groove 132 extending to the side portion of the corrosion resistant case 11 may be applied to the orthodontic main line insertion portion 13. In this case, as described below, the orthodontic force imparting member 10 can be easily attached and detached, and planned orthodontic correction can be easily performed.

  Further, as shown in FIGS. 1 and 2, a housing portion 15 is provided around the orthodontic main line insertion portion 13. The accommodating portion 15 includes a plurality of perforated holes 151 in which a cylindrical bar magnet 30 is disposed. By adjusting the inner diameter, depth and number of the holes 151, the outer diameter, length and number of the bar magnets 30 to be accommodated can be easily adjusted, and the residual magnetism of the orthodontic force imparting member 10 can be reduced. It can be adjusted to a desired size.

  Further, as shown in FIG. 3, the inner cylinder 122 can be arranged in the outer cylinder 121, and the sealing lid 20 can be provided at the ends thereof to constitute the corrosion resistant case 11. A space portion formed therebetween can be used as the accommodating portion 15. By disposing the columnar bar magnet 30 in the accommodating portion 15, the cross-sectional area of the accommodable bar magnet can be further increased.

  In each of the above examples, a plurality of cylindrical bar magnets 30 are arranged in the corrosion-resistant case 11, but as shown in FIGS. 4A and 4B, the orthodontic main line is inserted. A structure may be adopted in which a single magnet is accommodated in the accommodating portion 15 provided integrally around the portion 13. In this case, since the sectional area of the bar magnet that can be accommodated can be further increased, the residual magnetism of the orthodontic force imparting member 10 can be further increased.

  Further, as shown in FIG. 5, the corrosion resistant case 11 is preferably provided with a ligature portion 18 for attaching the orthodontic force imparting member 10 with a ligature wire 55. This facilitates the work of disposing the orthodontic force imparting member 10 on the orthodontic main line 50 and coupling it integrally with the bracket.

  The corrosion resistant case 11 may be made of any material as long as it has sufficient corrosion resistance in the mouth of the patient to be worn and can pass the magnetic lines of force. For example, SUS303, SUS316, SUS447J1, and AUM20 are preferable. These are preferable because they have high corrosion resistance and excellent mechanical strength, are suitable for machining, and do not adversely affect the human body.

  The corrosion resistant case 11 is preferably provided with an indication of the magnitude of residual magnetism of the orthodontic force imparting member 10. Furthermore, it is preferable to provide an indication of the length of the orthodontic force imparting member 10. As a result, the pair of orthodontic force imparting members 10 having the required residual magnetism can be easily arranged at predetermined intervals, so that an appropriate force can be applied to the teeth and planned orthodontic can be performed. It becomes easy.

  The bar magnet 30 accommodated in the corrosion resistant case 11 can be used regardless of the type. For example, neodymium magnets (Fe—BNd magnets), sumakoba magnets (Sm—Co magnets), ferrite magnets, and the like can be used. When a neodymium magnet is used, since the neodymium magnet has extremely high residual magnetism, the orthodontic force imparting member 10 having a compact and strong orthodontic force can be configured.

  In the present invention, the bar magnet 30 is housed in the corrosion resistant case 11. For this reason, since it is not necessary to perform advanced machining on the bar magnet 30, for example, a neodymium magnet manufactured by a sintering method that is very hard and difficult to machine can be easily applied to the orthodontic force imparting member 10. Can be assembled.

  FIG. 6 shows an example of an orthodontic mechanism using the orthodontic force imparting member 10. Brackets 40A and 40B are bonded to the surfaces of the canine 62 and the second premolar 64, and the orthodontic force imparting members 10A and 10B are inserted into the orthodontic main line 50 connecting the brackets 40A and 40B. Arranged between 40B. The orthodontic force imparting members 10A and 10B have the structure shown in FIG. 2, and are arranged so that the N and S poles face each other. The orthodontic force imparting members 10A and 10B are disposed on the orthodontic main line 50 by attaching a ligature wire 55 to the ligature portion 18. The orthodontic main line 50 and the brackets 40A and 40B are slidably engaged with the ligature wire 55, and the orthodontic force imparting members 10A and 10B are fixed to the brackets 40A and 40B with the ligature wire 55, respectively.

  In the present orthodontic mechanism, the orthodontic force imparting members 10A and 10B are selected with reference to the residual magnetism and length displayed on the corrosion resistant case 11. Further, the orthodontic force imparting members 10A and 10B are exchanged in accordance with the movement of the teeth. The orthodontic force imparting members 10A and 10B can be easily replaced by cutting the orthodontic force imparting members 10A and 10B and the orthodontic main line 50 and the ligature wire 55 between the brackets 40A and 40B.

  With the above configuration, an appropriate correction force in the direction of the arrow can be applied to the canine 62. When the canine 62 is moved in the direction opposite to the arrow, the orthodontic force imparting members 10A and 10B are arranged so that the same poles (for example, N and N poles) face each other. In this case, it is not necessary to ligate the orthodontic force imparting members 10A and 10B to the brackets 40A and 40B, respectively.

It is an enlarged view of the orthodontic-force provision member by one Example of this invention. It is an enlarged view of the orthodontic force provision member which has a ditch | groove. It is an enlarged view of the orthodontic-force provision member by another Example. It is an enlarged view of a bar magnet integrated type orthodontic force imparting member. It is an enlarged view of the orthodontic force provision member which has a ligation part. It is explanatory drawing of an orthodontic mechanism.

Explanation of symbols

10, 10A, 10B Orthodontic force imparting member
11 Corrosion resistant case
12 Case body
13 Orthodontic main line insertion part
15 containment
18 Ligature
20 Sealed lid
30 bar magnet
40, 40A, 40B bracket
50 Orthodontic main line
55 Knotting wire
62 canine
64 Second premolar
121 outer cylinder
122 inner cylinder
131 Center hole
132 groove
151 holes

Claims (8)

  An orthodontic force comprising an anti-corrosion case and a bar magnet hermetically housed in the anti-corrosion case, wherein the anti-corrosion case is provided with an orthodontic main line insertion portion in parallel with the bar magnet. Giving member.   The orthodontic force imparting member according to claim 1, wherein the corrosion resistant case includes an orthodontic main line insertion portion including a central hole penetrating the corrosion resistant case.   The orthodontic force imparting member according to claim 1, wherein the corrosion resistant case has an orthodontic main line insertion portion formed of a concave groove extending to a side portion of the corrosion resistant case.   The orthodontic force imparting member according to any one of claims 1 to 3, wherein the corrosion-resistant case has a housing portion in which a plurality of bar magnets are disposed around the orthodontic main line insertion portion.   The orthodontic force imparting member according to any one of claims 1 to 4, wherein the corrosion resistant case is provided with a display of residual magnetism.   The orthodontic force imparting member according to claim 1, wherein a ligation portion is provided in the corrosion resistant case.   The orthodontic force imparting member according to claim 1, wherein the bar magnet is a neodymium magnet. The orthodontic force imparting member according to any one of claims 1 to 7 is inserted and disposed in the orthodontic main line so that the same or different poles face each other, and imparts orthodontic force to the teeth via the brat. Orthodontic mechanism to do.

Images