JPH0344774B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an orthodontic appliance, particularly an orthodontic appliance equipped with a bracket for locking and latching an orthodontic wire, and which is small enough to be easily attached from the lingual side. This relates to a structure that has a shoulder for orthodontic wire locking, a base with a flat lower surface that is joined to the back side of the tooth, a bearing provided on this base, and a bearing provided on this base. freely rotatably supported on the
a rotary pedestal for holding the wire, the shoulder portion of the base has a stepped portion inclined with respect to the back surface thereof, the base has an inclined lower surface, and the bearing portion is plate-shaped and has a shaft hole. The present invention is characterized in that the present invention includes a bracket for holding an orthodontic wire, which is inclined with respect to the lower surface of the base.

This type of structure is known from the West German patent no.
No. 2821127, No. 2919640, U.S. Patent No. 4196517
No. 4268249, etc. These structures are attached from the outside of the tooth row, and in order to be attached to the back side of the teeth from the tongue side (inner side of the mouth), the overall structure must be made smaller. The lingual attachment structure has the advantage that the orthodontic wire and the bracket that tensions and supports the wire are located on the back side of the teeth, making it very convenient in terms of appearance, but without contact with the tongue. Therefore, it has to be small in size and have chamfered corners so that it feels good on the tongue and does not hurt the tongue.

According to the present invention, a base having an orthodontic wire locking shoulder and having a flat lower surface that is joined to the back side of the teeth, and a bearing provided on the base;
a rotary pedestal that is rotatably supported by the bearing and holds the wire; the shoulder of the base has a step that is inclined with respect to the back surface thereof; and the base has an inclined lower surface. The gist is that the bearing part is provided with a bracket for holding an orthodontic wire, which is plate-shaped and has a shaft hole inclined with respect to the lower surface of the base, and is bonded to the back side of the tooth. The device holds the orthodontic wire, applies appropriate tension to it, adjusts the holding angle of the wire, and is compact as a whole, making it convenient for attachment from the lingual side.

In addition, the rotating pedestal is tilted with respect to the base, reducing the overall height and making it possible to downsize.

Next, the present invention will be explained in detail with reference to illustrated embodiments.

The bracket in an orthodontic appliance equipped with a wire tension and/or wire fixing bracket consists of a base 1 and a plate-shaped bearing 2, which extends integrally from the base 1. , is inclined with respect to its lower surface. The base 1 is also provided with a step 3 for locking the wire,
This stepped portion faces a rotary pedestal 4 that is rotatably supported by a bearing portion 2, and a wire insertion portion 5 is provided between the two (see Figs. 1 and 6).
The rotary pedestal 4 is rotatably attached to the bearing part 2 via a pivot 6, and a dish-shaped spring 7 is engaged with an end 8 of the pivot 6 that protrudes from the bearing part 2 to prevent it from coming off the bearing part 2. It seems like there is no such thing. The end portion 8 of the pivot shaft and the spring 7 are located in a recess 9 cut out in the bottom surface of the inclined base portion 1.

The pivot 6 is hollow and is adapted to hold a correction or correction spring or the like. The rotary base 4 is provided with a blind hole 10, and a jig such as a rod is inserted into the blind hole to rotate the rotary base 4. Flanges 11 are provided on both sides of the base 1, and pads 12 are placed on the back surfaces of these flanges.
The structure is such that it is joined to the back side of the board via a pad part. The flange 11 is provided with a hollow portion 14 for ease of handling. The overall structure of the bracket is extremely small in size.

As is clear from the illustrated structure, the angle α between the bearing part 2 and the inclined step part 3 and the angle α between the bearing part 2 and the lower surface of the base 1 can be changed, and this angle α determines the torque angle. . Furthermore, the angle β between the axis B of the shaft hole of the bearing portion 2 and the longitudinal center plane A of the base 1 can be various angles (see FIG. 2). This angle β
determines the relative angle between the two.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of a wire locking bracket of an orthodontic appliance according to the present invention, FIGS. 2 and 3 are perspective views of the locking bracket viewed from above, and FIGS. Fig. 5 is an explanatory diagram showing the state in which the torque angle of the locking bracket is changed, Fig. 6 is a partially cross-sectional explanatory diagram of the state in which it is attached to the back side of the teeth, and Fig. 7 is a perspective view as well. be. 1...Base, 2...Bearing part, 3...Step, 4...
... Rotating base, 5 ... Wire insertion part, 6 ... Pivot, 7 ... Spring, 8 ... End, 9 ... Recess, 10 ... Blind hole, 11 ... Flange, 12 ...
Padded, 13...teeth, 14...gouged part.

Claims (1)

[Scope of Claims] 1. A base having an orthodontic wire locking shoulder and having a flat lower surface that is joined to the back side of the teeth, a bearing provided on this base, and a rotatable base provided on this base. a rotary pedestal that is freely pivoted and holds the wire; the shoulder of the base has a step sloped with respect to a back surface thereof; the base has a sloped lower surface; An orthodontic device comprising a bracket for holding an orthodontic wire, which is plate-shaped and has an axial hole inclined with respect to the lower surface of the base. 2. The orthodontic device according to claim 1, wherein the orthodontic wire has a tensioning effect. 3. The orthodontic device according to claim 1, wherein the orthodontic wire is fixed. 4. The orthodontic appliance according to claim 1, wherein the base is provided with a flange, and the lower surface of the flange is joined to the back surface of the teeth. 5. The orthodontic device according to claim 1, wherein the axis of the shaft hole of the bearing part makes an acute angle with respect to a central plane passing through the step part of the base part and the bearing part. 6. The orthodontic appliance according to claim 5, wherein flanges are provided on both sides of the base, and the orthodontic appliance is joined to the back side of the teeth via these flanges. 7 A recess is formed in the lower surface of the base, a shaft hole of the bearing portion is opened in the recess, the shaft hole is inclined with respect to the lower surface, and the rotary pedestal is inserted into the shaft hole. The orthodontic brace according to claim 1, wherein the end portion thereof is rotatably pivoted by a pivot shaft projecting into the recessed portion, and a spring such as a spring washer is inserted in the end portion. vessel. 8. The orthodontic appliance according to claim 1, wherein the rotating base is provided with a blind hole into which a rotating jig is inserted. 9. The orthodontic device according to claim 1, wherein the blind hole is provided toward the axial hole. 10. The orthodontic appliance according to claim 1, wherein the flange is lined with a pad, which is bonded to the back side of the tooth. 11. The orthodontic appliance according to claim 10, wherein said flange base is provided on both sides, and each pad is lined with a pad. 12. The orthodontic appliance according to claim 1, wherein each of the flanges has a gouged portion on a side thereof.