JPS5977846A - Dental orthodontic apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This relates to orthodontic devices.

The newest and most advanced method for this type of device is to fix brackets that hold orthodontic wires on each tooth, then attach and fix one wire to each of these brackets one after the other, and use the elasticity of the wire to straighten the teeth. It's a method. This method includes the ribbon arch method, edgewise method, Betzg method, and universal method, but the biggest drawback of these methods is that the brackets are attached or glued to the outer surface of the tooth, that is, the labial surface or similar surface. Therefore, when the patient opens his or her mouth, the brackets and wires are completely visible from the outside, which lacks aesthetics and therefore places a large mental burden on the patient. It is possible to attach brackets to the inner surface of the teeth, but with conventional brackets, it is not only extremely difficult to attach due to their structure, but also with small brackets with a thickness I of about 3 mm.
It was extremely difficult or impossible to insert the wire into the wire attachment groove from the gingival direction, fix it with a ligature, insert a lock pin into the bracket, fix it, cut it, etc.

JP-A-49-56492, JP-A-50-8069
The methods disclosed in Publication No. 4 and Japanese Unexamined Patent Publication No. 51-66190 are conventional methods as described above.

The present invention was invented in view of the above-mentioned problems, and is an orthodontic device that can be easily attached to the inside of the tooth row (for example, on the palate side).

That is, in order to fix the orthodontic wire to each tooth, a wire attachment groove is formed on the occlusal side of the bracket, which is generally parallel to the row of teeth and whose depth direction is from the occlusal surface to the gingival direction. This orthodontic device consists of a bracket in which no groove for inserting a locking pin for wire fixation is formed in the other part of the bracket.

The wire mounting groove of the present invention is formed on the occlusal side, and the depth direction is from the occlusal surface to the gingival direction, so the wire can be easily attached and removed from the occlusal side without deforming the wire, so it can be easily attached to the inner surface of the tooth. The brackets are easy to operate when attached to the teeth, and since all brackets are attached to the inner surface of the teeth, i.e. the palate side, the brackets do not come into contact with other people's eyes even when the mouth is opened, making it more aesthetically pleasing. At the same time, it is possible to reduce the mental burden on the patient and further enhance the therapeutic effect.

By forming a hook on the bracket, the cap for holding the wire can be easily attached and removed, and in addition to the cap, a ligature or a rubber O-ring can be used to hold the wire.

However, if the tooth row is not moved back and forth, the wire will not come out of the mounting groove.

The embodiments shown in the drawings will be described below.

In Figure 1, (1) is a wire-mesh-like adhesive plate with a side of about 4 to 5 mm, and this adhesive plate (1) is bonded to the inner surface of the tooth with adhesive, so it does not conform to the surface shape of the tooth. It is also slightly curved.

A stainless steel bracket body (2) having a side of about 3 to 4 mm is bonded to the negative side of the adhesive plate (1).

A cap (4) for holding the orthodontic wire (3) is fitted onto the bracket body (2).

The bottom part (5) of the bracket body (2) is the adhesive plate (1)
The main part (6) forms the camp contact surface. The cap (4) is formed by pressing an elastic metal plate, and has a wire mounting groove on the occlusal side of the bracket body (2) that is approximately parallel to the tooth row and whose depth direction is from the occlusal surface to the gingival direction. (9) is formed, and the cap is formed in a cross-sectional shape so as to straddle this mounting groove (9).

Both ends of the cap are bent into a C-shape to form an elastic engagement part (10), and the hook (14) that this engages with is located below the bracket body (2), and the hook (15) is located in the mounting groove ( 9) is formed on the - side. The illustrated wire mounting groove (9) is formed to have approximately the same size as the wire (3), so the wire (3) does not protrude from the groove (9).

(12) is a screw for removing the cap (4).
2).

Although not shown, the means for preventing the cap from shifting in the lateral direction is formed by forming a tongue piece on the side surface of the cap that engages with the side surface of the bracket.

Now, the bracket main body (2) configured as described above is adhered to the tooth.

Next, a wire (3) curved into a roughly U-shape along each tooth.
is inserted into the wire mounting groove (9) of the bracket body (2) from the occlusal side, and the cap (4) is press-fitted. Then, the elastic engagement pieces (10) are engaged and fixed to the hooks (14) and (15).

When removing or replacing the wire (3), the cap (4) is removed from the bracket body (2) using the removal screw 12).

At this time, the force applied to the bracket body (2) is
), the bracket body (2) is attached to the adhesive plate (
1) and the adhesive plate (1) will not peel off from the tooth.

The wire attachment groove (9) shown in Fig. 2 is formed on the side shoulder of the bracket body, and (12) indicates a means for removing the cap, and a pin etc. is provided in the cavity (12) of the camp (4). It was designed to be inserted and pried open.

The wire mounting groove (9) in Fig. 3 is similar to that in Fig. 1, but the cap (4) is formed in a cross-sectional shape so as to straddle the wire (3), and hooks ( 14)
(15) is formed.

(12) is formed by being bent on one side of the elastic engagement piece (10) by the cap removal means, and constitutes one folded piece.

In the case of FIG. 4, the hook (7) is formed only at the lower part of the bracket body, and the upper part is simply bent into the shape of the end C of the cap using the wire mounting groove as a hook.

In addition, the bracket body (2) and/or the cap (4)
) can be opened by inserting a bottle or the like into the gap (12).

Figures 5(a) and 5(b) are similar to those in Figure 4, but the upper end of the cap is not bent. (13) is a means for preventing the cap from slipping laterally, and the tongue piece (11) of the cap (4)
is adapted to engage with the notch (8) of the bracket body (2), and is used in place of the elastic engagement part (10) in FIG. 4.

FIG. 6 is similar to that of FIG. 3, but one end of the cap is replaced by anti-slip means similar to that of FIG.

The one in FIG. 7 shows the cap shown in FIG. 5 with a knob (15) formed thereon.

In any case, the wire of the present invention can be mounted without deforming the wire, and the wire will not come off the wire mounting groove when the tooth row is moved back and forth.

In addition, in the case of the cicada example, the wire holding method was explained using a cap, but the wire can also be held using a hook, a ligature wire, or a rubber O-ring.

[Brief explanation of drawings]

Figures 1, 2, 3 and 4 are side views of the first, second, third and fourth embodiments. Figures 5(a) and (b) are side views and plan views of the fifth embodiment. FIG. 6 is a side view of the sixth embodiment. FIG. 7 is a perspective view of the seventh embodiment. (1)... Adhesive plate (2)... Bracket body (3)... Orthodontic wire (4)... Cap (9)... Wire attachment groove application win 1) Kinya's agent Watanabe Duty

Claims (1)

[Claims] In a bracket that is attached to each tooth in order to fix an orthodontic wire to each tooth, a wire attachment groove is formed on the occlusal side of the bracket, which is approximately parallel to the tooth row and whose depth direction is from the occlusal surface to the gingival direction. An orthodontic device consisting of a bracket that does not have any grooves for inserting lock bins for wire fixation in other parts.