JPH03168142A - Orthodontic bracket cap - Google Patents

Abstract

PURPOSE:To greatly enhance the correction capacity to the teeth by providing the fitting part formed in a protruding or depressed state to a cap on the back side thereof so as to be fitted in a bracket in the surface direction thereof to transmit the force applied to the cap to the bracket. CONSTITUTION:As the fitting part fitted in the bracket 2 in the surface direction thereof in order to transmit the force applied to a cap 6 to the bracket 2, a protruding part 9 is provided to the central part of the cap 6 on the back side thereof. Therefore, a depressed part 10 is also provided to the bracket 2 so as to be fitted with the protruding part 9 of the cap 6. In using the cap, the base 1 of the bracket 2 is fixed to the surface of the teeth by an adhesive and, subsequently, a wire 13 is held to a slot 3 in common with the bracket of the adjacent teeth to be tightly fastened thereto and the protruding part 9 to be fitted in the bracket of the cap 6 is pushed in the depressed part 10 of the bracket 2 and both end parts of the cap 6 are caulked to engage a ridge part 7 with the groove part 5 of the bracket 2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a bracket cap for orthodontics, and in particular, the bracket cap has a cap for fitting with the bracket and transmitting force applied to the cap to the bracket. For orthodontics, it is possible to apply an effective force to the tooth to be corrected in a more appropriate direction by providing a shaped fitting part that protrudes or recesses on the back side of the cap, and by providing a wing on the cap. It is placed between the bracket cap.

[Prior Art 1] Brackets are used in orthodontic devices for correcting irregularities in dentition, tooth occlusion, and the like.

Brackets are used by being fixed to the surface of the tooth in order to apply the elastic force generated by bending or twisting the wire to the tooth to be corrected.Brackets have traditionally been made of metal, plastic, or ceramic, and are usually made of 4
As shown in a perspective view in Figure (a), a slot 3 is provided in a bracket body 2 attached to a base 1 to be fixed to a tooth, and a wire is held in the slot 3. As shown in the front view of the vicinity of the tooth 12.12, the above-mentioned correction is performed by the elastic force generated by tightening the wire 13 that is commonly stretched across the bracket 2 attached to the adjacent tooth. be.

Further, in order to prevent the wire 13 held in the slot 3 of the bracket from coming off from the slot 3, the wire 13 is ligated with a ligature wire 14 made of an ultra-fine metal wire, as shown in a side view in FIG. 4(b). It was normal to do so.

However, as described above, the wire 1 is
Ligating the ligature wire has various problems, such as difficulty in ligating and attaching and removing the ligature, and the risk of damaging the inside of the oral cavity. Invented and applied for a bracket cap shaped to cover the surface.

[Problem to be solved by the invention] The above bracket cap for which the inventor of the present application has already applied,
It covers the surface of the bracket and protects the wire, and has the advantages of being easy to put on and take off, and that there is no risk of damaging the inside of the oral cavity. It was hoped that this would be achieved. ■Since the bracket cap of the prior invention does not have wings, it is not possible to use elastic or coil springs, and it is difficult to deal with cases that require tooth rotation, torque movement, etc. Improvements to the following points.

■Although conventional brackets have wings, it is not possible to attach or remove just the wings, so if it becomes necessary to apply a new force to the teeth in a different direction depending on the progress of orthodontic treatment. This is an improvement over the issue where the brackets had to be replaced with new brackets prepared separately, and damage to the teeth due to the debonding operation was unavoidable at that time.

[Means and effects for solving the problem] The present invention has been made to solve the above-mentioned problem, and the present invention has been made in order to solve the above-mentioned problems, and the present invention is directed to the above-mentioned bracket cap. The present invention provides a bracket cap for orthodontics that is provided with a fitting part formed by protruding or recessing on the back side for transmitting the information to the bracket, and with this, the bracket does not easily come off even if a considerable force is applied to the cap. In addition, in the case of a wing equipped with a wing, even when a considerable amount of orthodontic force is applied to the wing with elastic, etc., the force is effectively applied to the tooth to be corrected. It is made so that it can be transmitted.

In the present invention, it is preferable that at least the surface color is similar to the color of teeth, and furthermore, in order to engage the cap and the bracket, a ridge-like or ridge-like shape is formed in a direction parallel to the slot of the cap or the bracket. The cap provided with the engaging element can further prevent the cap from coming off.

Furthermore, it is preferable that the cap is made of an elastic material, since this allows the engaging element to work more effectively.

As described above, the orthodontic bracket cap of the present invention can perform tooth correction when moving teeth with misalignment, and can apply complex and considerably strong forces such as rotation and torque to individual teeth. As the orthodontic treatment progresses, it becomes possible to apply force in different directions to the tooth, and by making the color of the bracket cap similar to that of the tooth, the I! ability can be granted. Note that the color similar to that of a tooth here means the color of a crown, white, colorless, or pale transparent.

[Example] The present invention will be described in detail below based on an example shown in the drawings.

(First Embodiment) Generally, as shown in a perspective view in FIG.
has a slot 3 in which a wire (not shown) is to be held. The orthodontic bracket of the present embodiment has two lug portions 5, 5 to be engaged with the engaging elements of the cap (described later) on both sides of the stem portion 4 of the bracket body 2 in a direction parallel to the slot 3. It is set up.

As shown in the perspective view in FIG. 1(a), the bracket cap to cover the bracket has groove-shaped portions on both ends of the cap body 6 as engaging elements for engaging with the bracket 2. 5.5 is provided with ridges 7, 7 in a direction parallel to the slot 3 of the bracket 2, and the side surface of the cap 6 has a notch 8 for passing the wire through. .

Furthermore, in the bracket cap of this embodiment, the first
Figure 1(a) shows a perspective view, and Figure 1(c) shows A- with the wire held by the bracket and the cap covered.
As shown in the cross-sectional view along line A', in the center of the cap 6,
A protrusion 9 is provided on the back side of the cap as a fitting part that fits from the surface direction of the bracket 2 and transmits the force applied to the cap 6 to the bracket 2.

Therefore, the bracket 2 is also provided with a concave portion 10 that is recessed in the above-mentioned direction in order to fit into the protrusion 9 provided on the cap 6.

Further, near the surface of the cap 6, a wing ll protrudes laterally with respect to the slot 3 of the bracket 2.
A is provided.

To provide the wing lla, the wing lla may be formed integrally with the cap 6 when it is shaped, or the wing lla may be welded or attached using an adhesive or the like after the main body of the cap 6 is formed.

The attachment position of the wing lla should be cap 6 if possible.
Although it is preferable that the surface be closer to the surface (as shown) in order to effectively apply the force applied to the tooth, the present invention is not limited to this.
No matter where it is installed near the base of the cap 6 (bottom in the figure),
It is sufficient that the direction protrudes laterally with respect to the slot 3 as described above.

To use the cap of the present invention, as already explained in FIG. After fixing the bracket 2 to the surface of the tooth 12 by holding the wire 13 in the slot 3 in common with the bracket of the adjacent tooth, the cap 6 explained below in FIG. The protrusion 9 to be fitted with the bracket is inserted into the recess 1 of the bracket 2.
0 and fit together, and then caulking both ends of the cap 6 to engage the ridge-shaped portion 7 with the arch-shaped portion 5 of the bracket 2, so that the cross-sectional view shown in FIG. As shown in FIG. 2 and shown in a top view in FIG. 2(d), the cap 6 is held while covering the surface of the bracket 2.

In the embodiment of the present invention, an auxiliary device such as an elastic can be attached to the wings 11a provided on the cap 6 engaged with the bracket 2 as described later, and the cap 6 can be used with the bracket 2 and Since the fitting protrusion 9 is provided, the force applied to the auxiliary device such as the elastic is transmitted to the tooth to be treated via the bracket 2, and the force applied to the cap 6 is considerably strong. There is no risk that the cap 6 will come off from the bracket 2 even if the cap 6 is bent.

The material for forming the cap 6 may be selected from various materials such as metal (including alloy), plastic, or ceramic.

In addition, at least the surface portion of the cap 6, that is, the surface portion of the cap that corresponds to the top surface in FIG. There is.

Therefore, when the orthodontic device wearer opens his or her mouth, the bracket becomes less noticeable.

In order to make the surface of the cap a color similar to the color of the teeth, it is necessary to select a material that exhibits a similar color, or
Alternatively, the hue may be adjusted by mixing pigments with the material of the cap, or by pasting a thin film of the desired color on the surface of the cap, or by applying an adhesive containing pigments, etc. Any method may be selected as appropriate.

<<Second Example> In this example, a perspective view of the cap 6 is shown in FIG. 2(a), and the cap 6 is fitted to a bracket 2 holding a wire 13 in FIG. 2(b). It is shown in a top view showing state 11.

In the case of this example as well, the cap 6 is provided with a protrusion 9.9 on the back side for fitting inward from the surface direction of the bracket 2 and transmitting the force applied to the cap 6 to the bracket 2. , and near the surface of the cap 6 there is a wing lla projecting laterally to the slot 3 of the bracket.
This embodiment is similar to the embodiment shown in FIG. 1 in that wings are provided;
There are four d.

Furthermore, ridges 7.7 are provided at both ends of the cap 6 as engagement elements to prevent the cap 6 from coming off the bracket 2,
Further, it is similar to the embodiment shown in FIG. 1 in that a notch 8 is provided on the side surface through which the wire held by the bracket 2 passes.

(Third Embodiment) FIG. 3 is a drawing similar to FIG. 1(d) showing yet another embodiment, and as shown in the figure, near the surface of the cap 6,
This example shows an example in which 212 wings, lla and llb, are provided that project laterally with respect to the slot 3 of the bracket 2, and the other configurations are the same as the embodiments already described.

In the present invention, the number of wings to be provided on the cap 6 as described above may be determined depending on the therapeutic purpose.

(Other Embodiments) It goes without saying that there is no reason why the present invention should be limited only to the above-mentioned embodiments. The joint may be formed into a protruding shape. Further, the number of fitting portions is not limited to one pair as described above, but two or more pairs may be provided as necessary.

Regarding the engagement element, the bracket may have a ridge-like part parallel to the slot, and the cap may have a ridge-like part,
Alternatively, it may be carried out by attaching screws or elastic wedges to appropriate locations on the cap, and inserting and engaging the screws into receiving holes drilled in the bracket.

Regarding the shape of the bracket to which the bracket cap of the present invention is applied, only a bracket with a rounded upper surface is illustrated in the drawings, but for example, a square columnar shape or a trapezoidal shape as shown in FIG. 4(a) can be used. It may be used in any shape, such as one in which a concave portion is formed as shown in FIG. 1(b).

Furthermore, it is also effective to use materials such as shape memory alloy, shape memory synthetic resin, or heat-shrinkable synthetic resin for the bracket cap of the present invention.

Further, in the embodiments, only the case where the bracket is attached to the vestibular side of the tooth has been exemplified, but it goes without saying that the present invention is not limited to this, and the present invention can also be applied to a cap of a bracket that is attached to the lingual side of the tooth.

Of course, the same applies to those that use a band ring instead of the base of the bracket.

[Effects of the Invention] As described above, the present invention provides a cap that engages with an orthodontic bracket and covers the surface of the orthodontic bracket. Since there is a fitting part formed by protruding or recessing on the back side, even if a considerable force is applied to the cap,
This force can be transmitted to the bracket without the cap coming off.

If the bracket of the present invention is provided with a wing that protrudes laterally to the wire holding slot, the correction can be carried out by attaching an auxiliary device such as an elastic to the wing and tightening it. Rotate to the desired tooth,
It is possible to apply force such as torque with delicately controlled direction and strength, and it is possible to apply an appropriate force to the tooth in the appropriate direction, which could not be obtained with just a wire stretched through the slot of a conventional bracket. Furthermore, even if the force is quite strong, the force is accurately transmitted to the bracket by the fitting part that fits with the bracket, resulting in a device that dramatically improves the ability to correct teeth. .

Furthermore, since the wings of the present invention are attached to the cap as described above, even if it becomes necessary to apply a new force to the tooth as the treatment progresses, it is possible to replace the cap with a wing of a different shape. , and can apply force in a different desired direction and strength 15 , so there is no need to replace the bracket with a different type each time, which not only shortens the treatment time but also significantly improves the therapeutic effect.

Furthermore, since the wings are installed in a direction transverse to the slot provided in the bracket, they form an angle that is almost perpendicular to the wire that is stretched across the slot, so that forces in directions that cannot be applied by the wire alone are generated. In addition to being able to apply force in all directions by combining forces with the wire, it becomes possible to apply force in all directions.

Moreover, as described above, since the cap has the groove-shaped or ridge-shaped engagement element in the direction parallel to the slot of the bracket, the cap is reliably engaged with the bracket by the engagement element, and the cap is It replaced the wire and prevented the wire from coming off.

In addition, when adjusting the wire, the cap can be easily attached and detached even by non-experts, which shortens treatment time and eliminates the risk of the cut piece 16 of the ligature wire flying into the pharynx of the patient being corrected. It can be prevented.

Furthermore, caps made of elastic material are easier to put on and take off, making it easier to change the force applied to the teeth as the treatment progresses, and the caps are structured so that they do not come off easily. You can take precautions.

In addition, since the cap has a notch that allows the wire to pass through, the wire is not tightened by the cap, so the tensile force of the wire is not blocked by the bracket, and is accurately transmitted to the teeth below the adjacent teeth. Ru. In addition, since the cap has an oval shape that covers almost the entire surface of the bracket, the bracket is covered with the cap of the present invention, and even when the person undergoing treatment opens his or her mouth, the bracket is not directly visible, which improves aesthetics. In addition, if the color of the cap is similar to that of the teeth, the cap itself will not stand out, greatly contributing to improving the aesthetics of the person wearing the orthodontic device as a whole. Become something to do.

[Brief explanation of the drawing]

FIG. 1(a) is a perspective view of a cap of an orthodontic bracket in which the present invention can be implemented, FIG. 1(b) is a perspective view of the same bracket, and FIG. 1(c) is a perspective view of a cap of an orthodontic bracket that can implement the present invention. 1(a) is a cross-sectional view taken along the line AA', FIG. 1(d) is a top view of FIG. 1(c), and FIG.
．． ) is a perspective view of a cap in another embodiment, FIG.
b) is a drawing similar to Fig. 1(d), Fig. 3 is a drawing similar to Fig. 1(cl) in the third embodiment, Fig. 4(a) is a perspective view of a conventional bracket, Fig. 4 (b) is Fig. 4(a)
a side view showing a state in which wires and ligatures are attached to the
FIG. 5 shows a front view of the vicinity of the tooth, showing a state in which the teeth are being corrected using brackets. DESCRIPTION OF SYMBOLS 1: Base of bracket, 2: Bracket, 3: Slot, 4: Stem portion of bracket 5: Groove portion of bracket, 6: Cap, 7 Ridge portion serving as a second anchor element, 8
: Notch, 9: Projection, IO: Recess, 1
la~11b: wing, 12: tooth,

Claims (8)

[Claims] (1) In a cap shaped to engage with an orthodontic bracket and cover its surface, a protruding or recessed portion is formed on the back side of the bracket for fitting from the surface direction of the bracket and transmitting force applied to the cap to the bracket. A bracket cap for orthodontics, characterized in that it has a fitting part formed by forming a fitting part. (2) The orthodontic bracket cap according to claim 1, wherein the cap is provided with an engaging element having a groove shape or a ridge shape in a direction parallel to the slot of the bracket. (3) The orthodontic bracket cap according to claim 1 or 2, further comprising a wing projecting laterally with respect to the wire holding slot of the bracket. (4) The orthodontic bracket cap according to any one of claims 1 to 3, further comprising a notch through which an orthodontic wire passes. (5) The orthodontic bracket cap according to any one of claims 1 to 4, characterized in that the color of at least the surface is similar to the color of teeth. (6) The orthodontic bracket cap according to any one of claims 1 to 5, wherein the material is an elastic material. (7) A recessed or protruding fitting portion for fitting with the fitting portion of the orthodontic bracket cap according to any one of claims 1 to 6 is provided on the front side of the orthodontic bracket. An orthodontic bracket characterized by: (8) An orthodontic device comprising a combination of the orthodontic bracket cap according to any one of claims 1 to 6, the orthodontic bracket according to claim 7, and a wire.