JP2007111317A - Embedding tool for orthodontia - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedding tool for orthodontic treatment with which an elastic line is ligated and fixed firmly and which is easy to handle. <P>SOLUTION: The embedding tool 10 for orthodontic treatment is provided with: a screw part 12 for embedding; a head part 14 combined with the proximal end of the screw part 12 and having at least a pair of planes 14a parallel to each other formed on its outer peripheral surface; and a bracket 15 arranged on an opposite side 14b to the screw part 12 of the head part 14. The bracket part 15 is arranged more on an inner side than the profile of the head part 14 in the case of viewing the bracket from the axial direction 30 of the screw part 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an orthodontic implant.

  The mainstream of modern orthodontic treatment is a treatment system using a multi-bracket device as shown in FIG. In this device, a bracket as shown in FIG. 2 is attached to most teeth from the front teeth to the molars, and a tube is attached to the final molars. Orthodontic bullets, that is, round wires with different diameters and rectangular wires are inserted into the slots of these brackets, as shown in FIG. In this way, the teeth are ligated and fixed by a metal ligature wire, a ligature module, or the like, and the teeth are moved three-dimensionally (see Non-Patent Document 1).

  In recent years, in orthodontic practice, titanium screws called mini-screws or anchor-screws as shown in FIGS. 4 and 5 are implanted in bones such as alveolar bone. An effective treatment has been developed. This screw is almost stationary, and by using it as a fixed source, the teeth can be sufficiently moved in all directions, resulting in a dramatic improvement in the treatment of the multi-bracket system.

This type of screw (or orthodontic treatment implant) is disclosed in Patent Documents 1 and 2, for example.
Japanese National Patent Publication No. 10-507387 JP 2001-187071 A With orthodontic homepage, “About treatment methods and orthodontic devices”, Internet <URL: http://www.withmac.net/appguid/mb/mb.html>

  The design of the mini screw as shown in FIG. 4 can only function to hang a metal ligature, an elastic module, a coil spring, etc. on the screw head part or the hole part. Tooth movement is difficult.

  As shown in Fig. 5, a mini screw has been developed in which a square groove is formed in the screw upper structure and a correction bullet can be inserted, but the bullet is firmly ligated and fixed to the same degree as a bracket attached to a tooth. It was not enough and was not satisfactory.

  In addition, the conventional orthodontic treatment implants need to ligate and fix the wire in a unique manner for each shape, and the mode in which the wire is ligated and fixed depending on the type of the orthodontic treatment implant. Since they are different, handling is complicated and ligation / fixing work itself is troublesome.

  In view of such circumstances, the present invention is intended to provide an orthodontic treatment implant that can firmly tie and fix a bullet and is easy to handle.

  In order to solve the above-mentioned problems, the present invention provides an orthodontic implant device configured as follows.

  The orthodontic treatment implant includes an embedding screw portion, a head portion coupled to a proximal end of the screw portion, and having at least a pair of planes parallel to each other on an outer peripheral surface, and the head portion A bracket portion disposed on the opposite side of the screw portion. The bracket portion is disposed inside the outer shape of the head portion when viewed from the axial direction of the screw portion.

  In the above configuration, the orthodontic treatment implanter is embedded with the screw portion by rotating with the tool. At this time, the bracket portion is disposed inside the outer shape of the head portion of the orthodontic implant device when viewed from the axial direction of the screw portion of the orthodontic implant device. A socket or the like can be fitted into the head portion without interfering with the bracket portion. In addition, a substantially hemispherical sufficient space is secured around the bracket portion, and the ligation and fixing work can be easily performed.

  According to the said structure, since a wire can be firmly ligated and fixed to the bracket part of the orthodontic treatment implant, the movement of a tooth to a more exact direction becomes easy.

  In addition, a wire can be ligated and fixed to the bracket portion of the orthodontic implant device having the above-described structure in the same manner as the bracket to be attached to the tooth, and orthodontic treatment is performed like conventional orthodontic implant devices. There is no need to ligate and fix the wires in a special way that differs for each type of implant. The operation of ligating / fixing the wire to the orthodontic treatment implant having the above-described configuration is unified to the familiar operation of ligating / fixing the wire to the bracket to be attached to the tooth, so that the handling is easy.

  A specific aspect is as follows, for example.

  The bracket portion is formed with a first central groove and a pair of first parallel grooves. The first center groove extends in a direction substantially perpendicular to the axial direction of the threaded portion, and has openings on both sides of the extending direction and on the opposite side of the head portion. The pair of parallel grooves extend substantially parallel to the extending direction of the first central groove on both sides of the first central groove, the both sides of the extending direction, the extending direction, and the Openings are provided on both sides substantially perpendicular to the axial direction of the threaded portion.

  According to the above configuration, for example, the ligature is formed into a single ring shape and locked to the pair of first parallel grooves, and on the wire inserted through the first central groove (an orthodontic implant device). The wire can be firmly ligated and fixed to the bracket part by pressing the wire toward the head part of the orthodontic implant device by this transverse part. it can.

  Preferably, the bracket portion is formed with a second central groove and a pair of second parallel grooves. The second central groove extends in a direction substantially perpendicular to the extending direction of the first central groove and the axial direction of the threaded portion, and both sides of the extending direction are opposite to the head portion. And have openings. The pair of second parallel grooves extend substantially parallel to the extending direction of the second central groove on both sides of the second central groove, and both sides of the extending direction and the extending direction. And openings on both sides in a direction substantially perpendicular to the direction and the axial direction of the screw portion.

  In the above configuration, the second central groove intersects the first central groove, and preferably intersects substantially at a right angle.

  According to the above configuration, similarly to the first central groove and the first parallel groove, the wire can be firmly ligated and fixed to the bracket portion using the second central groove and the second parallel groove. . Therefore, it is possible to place wires in multiple directions with the orthodontic treatment implant implanted,

  Preferably, the first central groove has a rectangular cross section.

  In this case, since a square wire having a rectangular cross section can be inserted into the central groove and ligated and fixed, three-dimensional tooth movement can be accurately performed by incorporating the square wire.

  Note that not only the first central groove but also the second central groove may have a rectangular cross section.

  The orthodontic treatment implant of the present invention can firmly tie and fix the bullet, and is easy to handle.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  Example 1 A bracket-screw 17 that is an orthodontic implant for Example 1 will be described with reference to FIGS. 6 is a perspective view, FIG. 7 is a plan view seen from the axial direction, and FIG. 8 is an explanatory view of the tool.

  As shown in FIG. 6, the bracket screw 10 includes a screw portion 12, a head portion 14, and a bracket portion 15.

  The screw portion 12 has an outer screw formed on the outer peripheral surface, and a concave portion 13 formed on the tip 11 side. The threaded portion 12 has a so-called self-tapping structure that can be screwed in while the thread is being cut by the edge of the portion from which the thread is removed in the recess 13.

  The head portion 14 has a substantially hexagonal prism shape, and three pairs of plane portions 14 a parallel to each other are formed on the outer peripheral surface of the head portion 14. The head portion 14 is formed at the proximal end of the screw portion 12 coaxially with the central axis of the screw portion 12.

  The bracket portion 15 is provided on the upper surface 14b of the head portion 14 (the surface opposite to the screw portion 12). The bracket portion 15 has substantially the same shape as the bracket that is bonded to the teeth of FIG.

  That is, center grooves 18a and 18b are formed in the bracket portion 15 in a substantially cross shape. As in the case of FIG. 3, wires are inserted into the vertical and horizontal central grooves 18a and 18b. What is necessary is just to select suitably the dimension and shape of the cross section of center groove | channel 18a, 18b according to the dimension and shape of the cross section of the wire to be used. For example, the cross-sections of the central grooves 18a and 18b are substantially rectangular, and the vertical and horizontal widths of the rectangular wires having a rectangular cross-section currently used in orthodontic practice are fitted. The center grooves 18a and 18b have openings on both sides in the extending direction and on the side opposite to the head part 14, respectively.

  Further, each of the four bracket elements 16 divided by the central grooves 18a and 18b protrudes from the upper surface on the side opposite to the central groove 18a, and a bracket wing 17 is formed. A parallel groove 17 a is formed under the bracket wing 17. The parallel grooves 17a extend on both sides of the one central groove 18a so as to be substantially parallel to the one central groove 18a. The parallel grooves 17 a have openings on both sides in the extending direction and on both sides in the extending direction and a direction substantially perpendicular to the axial direction of the screw portion 14. Similar to FIG. 3, the correction bullet (wire) can be easily and firmly fixed by locking the ligature to the bracket wing 17.

  When the bracket portion 15 is viewed in the axial direction indicated by the arrow 30, the bracket portion 15 is disposed inside the outer shape of the head portion 14 as shown in FIG. 7.

  Next, a method for using the bracket screw 10 will be described.

  The bracket screw 10 uses the tool 20 whose main part is shown in FIG. 8, the head part 14 of the bracket screw 10 is fitted into the inner hole 24 of the socket 22 provided at the tip of the tool 20, and the tool 20 is rotated. The bracket screw 10 is rotated and the screw portion 12 is screwed into the bone. At this time, as shown in FIG. 7, since the bracket portion 15 is disposed inside the outer shape of the head portion 14, the socket 22 of the tool 20 is moved from the axial direction indicated by the arrow 30 to the head portion 14 of the bracket screw 10. The bracket portion 15 is accommodated in the inner hole 24 of the socket 22, and the tool 20 is rotated while the socket 22 is fitted in the head portion 14 while the bracket screw 10 and the central axis coincide with each other. The bracket screw 10 can be screwed in. When screwing, there is no need to repeat the engagement and disengagement of the tool 20 like a spanner, so that the planting work is easy.

  After the screw portion 12 is implanted in the bone, a wire is ligated and fixed to the bracket portion 15 in the same manner as the bracket that is bonded to the teeth of FIG.

  For example, after inserting a wire into the central groove 18a, a ligature is arranged in a ring shape around the bracket portion 15, and the ligature is inserted into the pair of parallel grooves 17a and locked to the bracket wing 17, respectively. Crosses over the wire inserted into the central groove 18a and twists the ligature to reduce the ligature ring so that the ligature on the wire presses the wire toward the head and screw. .

  (Example 2) A bracket screw 10x that is an orthodontic treatment implanter according to Example 2 will be described with reference to FIG.

  The bracket screw 10x according to the second embodiment is configured in substantially the same manner as the bracket screw 10 according to the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and the differences will be mainly described below.

  Similar to the bracket screw 10 of the first embodiment, the bracket screw 10x of the second embodiment includes a screw portion 12, a head portion 14x, and a bracket portion 15x.

  Unlike the first embodiment, the head portion 14x has a substantially quadrangular prism shape, and two pairs of plane portions 14s parallel to each other are formed on the outer peripheral surface of the head portion 14x.

  The bracket portion 15x is provided on the upper surface 14t of the head portion 14x. As in the first embodiment, the central grooves 18a and 18b are formed in a substantially cross shape, and each of the bracket elements 16 divided into four parts includes A bracket wing 17 is formed, and a pair of parallel grooves 17 a is formed under the bracket wing 17. Unlike the first embodiment, a pair of second parallel grooves 17b are formed in the bracket portion 15x on the side surfaces on both sides of the other central groove 18b in parallel with the other central groove 18b.

  As in the first embodiment, the bracket screw 10x can ligate and fix wires in the central grooves 18a and 18b. At this time, since the second parallel groove 17b is formed, even when the wire is inserted into the other central groove 18b, it is firmly ligated and fixed in the same manner as when the wire is inserted into the one central groove 18a. be able to.

  (Summary) As described above, the bracket screws 10 and 10x of the first and second embodiments employ the bracket attached to the teeth as the upper structure of the mini screw, so that they can be easily integrated into a series of multi-bracket system treatments. .

  By using this bracket screw, like a conventional screw, not only can ligature wires, modules, coil springs, etc. be built, but also a groundbreaking wire that can accurately move teeth in three dimensions. It can demonstrate almighty functions.

  The implanter of the present invention is not limited to the above-described embodiment, and can be implemented with various modifications.

  For example, the center groove of the bracket part may be one or three or more. The head portion may be formed with at least two plane portions extending in parallel with the central axis of the screw portion so that the head portion can be rotated using a tool. The screw portion may not have a self-tapping structure.

It is explanatory drawing of a multi bracket apparatus. (Conventional example) It is explanatory drawing of the bracket adhere | attached on a tooth | gear. (Conventional example) It is explanatory drawing of the ligation of a bracket and a bullet line. (Conventional example) It is explanatory drawing of the miniscrew used for orthodontic treatment. (Conventional example) It is explanatory drawing of the miniscrew which entered the square groove in the head. (Conventional example) It is a perspective view of a bracket screw. Example 1 It is a top view of the bracket screw of FIG. Example 1 It is explanatory drawing of a tool. It is a perspective view of a bracket screw. (Example 2)

Explanation of symbols

10,10x Bracket screw (orthodontic implant)
12 Screw part 14, 14x Head part 15, 15x Bracket part 16 Bracket element 17 Bracket wing 17a, 17b Parallel groove 18a, 18b Center groove

Claims (4)

A threaded portion for embedding;
A head portion coupled to a base end of the screw portion, and having at least a pair of planes formed in parallel to each other on an outer peripheral surface;
A bracket portion disposed on the opposite side of the screw portion of the head portion,
The bracket for orthodontic treatment, wherein the bracket is disposed inside the outer shape of the head when viewed from the axial direction of the screw. In the bracket part,
A first central groove extending in a direction substantially perpendicular to the axial direction of the threaded portion, and having openings on both sides of the extending direction and on the opposite side of the head portion;
The both sides of the first central groove extend substantially parallel to the extending direction of the first central groove, and both sides of the extending direction and the extending direction and the axial direction of the screw portion A pair of first parallel grooves having openings on both sides in a substantially vertical direction;
The orthodontic implant for orthodontic treatment according to claim 1, characterized in that is formed. In the bracket part,
Extending in a direction substantially perpendicular to the extending direction of the first central groove and the axial direction of the threaded portion, and having openings on both sides of the extending direction and on the opposite side of the head portion. Two central grooves,
On both sides of the second central groove, it extends substantially in parallel with the extending direction of the second central groove, and both sides of the extending direction and the extending direction and the axial direction of the screw portion A pair of second parallel grooves having openings on both sides in a substantially vertical direction;
The orthodontic implant for orthodontic treatment according to claim 2, characterized in that is formed.   The orthodontic treatment implant according to claim 1, 2 or 3, wherein the first central groove has a rectangular cross section.

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