JP2004174278A - Orthodontic base - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an orthodontic base which can do the mesial and distal drifting of a maxillary and mandibular molar, and the three dimensional control of reduction and so on randomly, is easy to insert and remove, has less potential for postoperative infection and mucosa damage when removing, and can keep pain and uncomfortable feeling to a minimum. <P>SOLUTION: An orthodontic base provides a fixed part 21 to fix on a jawbone, an exposed area 23 exposed within an oral cavity, and a movable mucosa penetration part 22 which is located between the fixed part 21 and the exposed area 23 and penetrates movable mucosa. It is formed by a plate wholly. Two or more thread connection openings 24 are formed only in the fixed part 21. Two or more consecutive locking parts 25 for locking a spring or rubber which gives an orthodontic force are set up on the exposed area 23. The locking part 25 consists of not less than double reams of processes 25. Those processes 25 project on both sides of the movable mucosa penetration part 22. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to an orthodontic support.

  Orthodontic treatment is performed by various methods. In order to move a tooth, a biasing means for applying a moving force and a fulcrum (fixing source) for fixing and holding the moving force are required.

  As the biasing means, for example, rubber, a leaf spring, or the like is used. See Patent Document 1.

  In addition, molars were often used as a fixing source. However, in this case, it is possible to move the front teeth and the premolars, but it is extremely difficult to move the molars themselves.

Methods have also been implemented to determine the source of fixation outside the mouth (outside the jaw). For example, a headgear is attached to the head or a neckband is attached to the neck to provide a fixed source. However, in such a method, since the fixation device is disposed outside the jaw, the outcome of the treatment depends on the cooperativeness of the patient. Further, the fixing device may come off due to some external factor.
US Patent 4,988,292

  In order to solve the above-mentioned problems, a method of using an implant body as a fixing source by applying an intraosseous implant has been performed.

  The implant method is a method in which an implant body is implanted in a bone and firmly fixed to the bone, and the exposed portion in the oral cavity is used as a fixing source.

  However, according to the implant method, after implanting the screw-shaped or rod-shaped implant directly into the bone, treatment must be waited until the implant is firmly fixed to the bone.

  In addition, the conventional implant body may be accompanied by pain or discomfort, and may cause damage to the mucous membrane during removal.

  Further, there is a method of diverting a mini plate used for osteosynthesis in plastic surgery as a fixing source. However, plastic mini-plates for plastic surgery have not been made in consideration of exposure in the oral cavity, so that all screw holes are designed to communicate with each other, and there is no hook portion, so handling is troublesome.

  In view of the problems of the prior art described above, the present invention can arbitrarily perform three-dimensional control such as mesio-distal movement and reduction of upper and lower molars, and can be easily implanted and removed. An object of the present invention is to provide a support for orthodontics, which has a low risk of mucous membrane damage during post-infection or removal, and can minimize pain and discomfort.

  The present invention provides a fixing part (21) for fixing to a jaw bone, an exposed part (23) exposed in the oral cavity, and a movable mucous membrane located between the fixing part (21) and the exposed part (23) and penetrating the movable mucous membrane. A plurality of screw holes (14, 24) are formed only in the fixing portion (21), and a spring or rubber for giving a correcting force is provided. A plurality of continuous locking portions (25) for locking (19) are provided on the exposed portions (13, 23), and the locking portion (25) is formed by a plurality of continuous projections (25). The gist of the present invention is a support for orthodontics, wherein the protrusions (25) protrude on both sides of the movable mucous membrane penetrating portion (22).

  ADVANTAGE OF THE INVENTION According to the orthodontic support of this invention, three-dimensional control of upper and lower molars can be performed arbitrarily, there is little possibility of mucosal damage at the time of postoperative infection or removal, and pain and discomfort are minimized. Can be suppressed.

  When a plurality of screw holes are formed only in the fixing portion, the implantation and removal are easy, and the tooth bud migration treatment can be started as a fixing source immediately after the support is planted.

  Since a plurality of continuous projections are provided on the exposed portion as a plurality of continuous locking portions for locking a spring or rubber, a part of the locking portion not used for locking can be removed. Therefore, a moving force can be applied from a desired position of the locking portion, and unnecessary locking portions can be easily cut. As a result, it is possible to leave only the necessary locking portions without any functional minus.

BEST MODE FOR CARRYING OUT THE INVENTION

  It is preferable that a plurality of continuous locking portions for locking a spring or a rubber for applying a correcting force be provided on the exposed portion so that unnecessary portions of the locking portion can be removed.

  The locking portion is constituted by a series of projections (two or more projections).

  As the material of the support of the present invention, a material that is less harmful to the living body, such as titanium, a titanium alloy, and a stainless alloy, is preferable.

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

  FIG. 1 is a plan view showing one embodiment of an orthodontic support of the present invention and a sectional view of a fixing portion thereof.

  The orthodontic support 20 is formed entirely of a plate, and is located at a fixing portion 21 for fixing to the jaw bone, an exposed portion 23 exposed in the oral cavity, and between the fixing portion 21 and the exposed portion 23. A movable mucous membrane penetrating part 22 penetrating the movable mucous membrane;

  The support 20 can be formed of, for example, titanium or a titanium alloy.

  The support 20 is used by being appropriately bent between the fixed part 21 and the movable mucosal penetration part 22 during treatment.

  The fixing part 21 has two screw holes 24. Each hole 24 is conical to fit the head of the screw. As shown in FIGS. 1B and 1C, there are two types of directions of the screw holes 24, which are selected according to the direction of the hook and the bending direction during treatment.

  The bone contact surface 26 of the fixing portion 21, that is, the surface 26 on the small diameter side of the screw hole 24 is roughened by sandblasting. The opposite movable mucous membrane contact surface may be mirror-finished.

  The exposed portion 23 is a portion that is exposed in the oral cavity, and includes a continuous locking portion 25 for locking a spring or rubber that applies a correcting force. In the embodiment shown, the locking part 25 is formed as a triple projection.

  The surface of the movable mucous membrane penetrating portion 22 between the fixed portion 21 and the exposed portion 23 is a mirror surface having a maximum surface roughness of 0.1 μm or less.

  Further, as a continuous locking portion, three consecutive projections 25 are formed so as to protrude to both sides. That is, as is well shown in FIG. 1A, the movable mucosa penetrating portions 22 have the same width, and each protrusion 25 has a shape protruding outward beyond the width of the movable mucosal penetrating portion 22. Has become.

  Note that the present invention is not limited to the above-described embodiment. For example, the number of protrusions functioning as locking portions is not limited to three, and may be two or four or more.

1 shows one embodiment of the present invention, wherein (A) is a plan view thereof, and (B) and (C) are cross-sectional views of a screwing plate.

Explanation of reference numerals

Reference Signs List 20 Orthodontic support 21 Fixed part 22 Movable mucous membrane penetrating part 23 Exposed part 24 Screw hole 25 Locking part 26 Bone contact surface

Claims (1)

A fixing portion (21) for fixing to the jaw bone, an exposed portion (23) exposed in the oral cavity, and a movable mucosal penetrating portion (22) located between the fixing portion (21) and the exposed portion (23) and penetrating the movable mucosa. ), And a plurality of screw holes (14, 24) are formed only in the fixing portion (21), and a spring or rubber (19) for giving a correcting force is provided. A plurality of continuous locking portions (25) for locking are provided on the exposed portions (13, 23), and the locking portion (25) is constituted by a plurality of continuous projections (25). An orthodontic support characterized in that the projections (25) protrude on both sides of the movable mucosal penetration (22).

Images