JPH0141332B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an orthodontic device used for the treatment of dental malocclusion, and particularly when it is attached to the inside of the teeth, it is difficult to insert an orthodontic archwire. The present invention relates to an orthodontic device that facilitates dental treatment.

[Conventional technology]

In dentistry whose main purpose is to treat dental malocclusion, the latest and most advanced method is to fix a bracket 1 as a wire holding device to each tooth 2, as shown in Fig. Insert and fix one orthodontic wire 3 in sequence,
This is a method of straightening teeth 2 using the elasticity of wire 3. For example, as shown in Fig. 2, when the central incisors 2 ₁₁ of the upper jaw are abnormally protruding outward as shown by the solid line and are to be corrected to normal occlusion as shown by the chain lines, first each tooth 2 ₁₁ ...
A band ring 4 is fitted into the band ring 4, and a bracket 1 is connected to the outer surface of the band ring 4. Next, these brackets 1
A single curved straightening wire 3 is sequentially fixed to ..., and the elasticity of the wire 3 corrects the straightening.

The biggest drawback of the above method is that since the brackets 1 are bonded to the outside of the teeth 2 ₁₁ , the brackets 1 are exposed to the outside when the mouth is opened, resulting in a lack of aesthetics. To solve this problem, the applicant has already proposed a device for treating teeth by attaching a bracket 1 to the inside of all the teeth as shown in FIG. 3 (Japanese Utility Model Publication No. 57-44967). As a result, the bracket and the like do not come into contact with other people's eyes even when the patient opens his/her mouth, which is aesthetically pleasing and also reduces the mental burden on the patient. The first one like this
In the method shown in the figures and in FIG. 3, the envelope connecting the outer or inner surfaces of the teeth has a substantially semi-elliptical shape.

On the other hand, with conventional brackets, the bracket is perpendicular to the occlusal plane (the plane formed to include all the points where the upper and lower tooth rows come into contact when the two rows of teeth intersect) (as shown in Figure 4) or Wire insertion grooves having either one parallel wire insertion direction were formed. For example, the invention described in JP-A-56-112238 can be mentioned.

[Problem that the invention seeks to solve]

However, in the conventional bracket 1, the wire insertion groove 5 was straight as shown in FIG.
It is troublesome to insert the pre-curved arch wire 3, and the arch wire 3 has to be bent and adjusted one by one, which not only makes the operation by the surgeon (orthodontist) troublesome, but also requires the arch wire 3 to be curved for correction. There were problems such as deformation of the wires. On the other hand, when performing orthodontics by attaching the bracket 1 to the inside of the tooth, the range in which the operator can operate becomes extremely narrow, making the orthodontic work difficult. A wire insertion groove is required.
On the other hand, in the case of a wire insertion groove that is substantially perpendicular to the occlusal plane as shown in Fig. 4, the wire insertion groove is composed of two opposing wall surfaces, so a relatively thick archwire (which increases orthodontic force and torque) is used. When using an archwire (which is useful for adding archwires), the wire cannot be inserted into the insertion groove in its original shape due to constraints from the wall surface of the wire insertion groove (this is particularly likely to occur in areas where the archwire has a steep curve). ), which limits the thickness of the archwire that can be used. Therefore, it is not possible to freely control the straightening force, torque, etc. by changing the thickness of the wire, which poses a problem in improving the efficiency and accuracy of straightening. still,
This problem does not occur with conventional wire holding devices provided with wire insertion grooves in the wire insertion direction substantially parallel to the occlusal plane. This is because a wire having a thickness matching the width of the groove can be easily inserted into the insertion groove regardless of the curve of the archwire. Furthermore, it is often necessary to apply orthodontic force to teeth at different locations from different angles, and a wire holding device having as many wire insertion directions as possible is desirable in terms of facilitating orthodontic work.

[Means and actions for solving problems]

The present invention has been made to solve these problems, and when attaching a wire holding device to the lingual side of a tooth, the orthodontic archwire can be easily inserted into the wire insertion groove, and the orthodontic force can be freely controlled. In an orthodontic device in which wire holding devices are fixed to the lingual side of each tooth and orthodontic archwires are sequentially engaged with these wire holding devices to correct the alignment of the teeth, the wire holding device is ,
an orthodontic device formed with a wire insertion groove that has a predetermined curvature that matches the shape of the orthodontic archwire and has a wire insertion direction that is substantially perpendicular to the occlusal plane when fixed to each tooth; In an orthodontic device in which a wire holding device is fixed to a side surface of each tooth, and an orthodontic archwire is sequentially engaged with these wire holding devices to correct tooth alignment, the wire holding device is fixed to each tooth. a first wire insertion groove having a wire insertion direction substantially perpendicular to the occlusal plane and matching the shape of the predetermined archwire for correction; and a wire insertion direction substantially parallel to the occlusal plane. The present invention provides an orthodontic device in which a second wire insertion groove is formed. Note that the above-mentioned predetermined curvature differs depending on which tooth in the tooth row it is used for.

By employing a wire insertion groove having a predetermined curvature, the archwire can be easily inserted and the wire thickness can be freely selected up to a wire thickness (full size) that matches the width of the wire insertion groove. Therefore, since it becomes easier to control the orthodontic force, torque, etc., the period required for orthodontic treatment can be shortened and the precision of orthodontic treatment can be improved.

On the other hand, by providing a second wire insertion groove with a different wire insertion direction, it is possible to select a wire insertion groove in which the archwire can be more easily installed, thereby further facilitating the archwire insertion work. Further, by employing the second wire insertion groove, the effect that the direction in which the orthodontic force is applied can be freely used is also provided.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings from FIG. 5 onwards. In Figures 5a and b, 6 is
This is an adhesive plate that serves as a fixed substrate that is directly bonded to the teeth. This fixed board 6 is a belt ring 4 as shown in FIG.
Alternatively, the fixed substrate 6 and the base (tooth surface side) of the bracket body 7 may be integrated. A case where the adhesive plate 6 is used will be described below. A bracket 7 as a wire holding device is fixed to the fixed substrate 6. A wire insertion groove 8 is formed on the upper surface of the bracket 7 with a predetermined radius of curvature R.
It is pre-curved. The radius of curvature R at this time depends on the purpose of use, that is, whether it will be used by bonding to the outside of the tooth or to the inside of the tooth.
They are formed in various sizes, for example from 5 mm to nearly infinity, so that they can be used depending on which teeth they are attached to, the upper jaw, the lower jaw, the large jaw, the alignment of the teeth, etc. In addition, Fig. 5 a, b
The lower protrusion 9 of the bracket 7 and the inner vertical hole 10 are for hanging a wire, a rubber ring, or a ligature.

The curved direction of the wire insertion groove 8 is not limited to the case where the wire insertion groove 8 is curved inward as shown in FIG.
It may be curved outward as shown in b.

In FIG. 7, a constriction 11 is formed in the lower protrusion 9 to make it easier to hook the rubber rod.

8a to 8d show embodiments of other shapes of the bracket 7, respectively. That is, Figure 8a
In this case, the wire insertion groove 8 is inclined and the upper protrusion 9
It has a. In addition, Fig. 8b shows the wire insertion groove 8.
Fig. 8c shows a case in which the wire is simply inclined, and has a vertical wire insertion groove 8 on the top surface, a horizontal wire insertion groove 8 on the side surface, and an upper protrusion 9a. In this case, the horizontal wire insertion groove 8 may also have a curved bottom. In addition to the wire insertion groove 8 on the top surface, FIG. 8d shows the wire insertion groove 8 on the side surface.
In this case, the wire insertion groove 8 on the side surface may also be curved, or the wire insertion groove 8 on the side surface may be horizontal, upwardly inclined, downwardly inclined, etc. good.

The wire insertion grooves 8 on the side surfaces shown in FIGS. 8c and d are provided so that the operator can select the direction in which the corrective force is applied during correction work. For example, in FIG. 8c, The wire insertion groove 8 on the top surface can apply corrective force in the right, left, and downward directions when the archwire is engaged, while the wire insertion groove 8 on the side surface can apply correction force in the upward, downward, and left directions. It is possible to impart corrective force. In other words, by making full use of the two wire insertion grooves, you can
A corrective force can be applied in the downward direction.

FIG. 8e shows a wire insertion groove 8 formed on the lower surface.

9a, b and 10 a, b respectively show other embodiments of the fixed substrate 6, of which FIGS. 9 a, b are curved outward or inward when viewed from the side. FIGS. 10a and 10b show curves that are curved outward or inward when viewed from the plane. Furthermore, it is also possible to combine the shapes in FIGS. 9a and 10b and the shapes in FIGS. 10a and 10b to form a three-dimensional curve, and various changes can be made depending on the shape of each tooth, the purpose of use, etc.

In addition, the shapes of the bracket 7 and fixed substrate 6 are not limited to those in the embodiment.

〔Effect of the invention〕

As explained above, according to the orthodontic device of the present invention, since the wire insertion groove has a predetermined curvature, the archwire can be inserted easily and without deformation even when the wire holding device is fixed to the tongue surface. In addition, by providing a predetermined curvature, you can freely select the archwire that can be used, up to the thickness (full size) that matches the width of the wire insertion groove, making it easy to control orthodontic force, torque, etc. The period required for alignment correction can be shortened and accurate correction can be achieved at the same time.

On the other hand, by providing the second insertion groove in which the wire is inserted in a different direction, it is possible to select a wire insertion groove in which the archwire can be more easily installed, thereby making it easier to insert the archwire. Further, by employing the second wire insertion groove, the effect that the direction in which the orthodontic force is applied can be freely used is also provided.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a method for orthodontic treatment by bonding a bracket as a wire holding device to the outer surface of a tooth, Fig. 2 is an explanatory diagram of the state of the tooth before and after orthodontic treatment, and Fig. 3
The figure is an explanatory diagram of a method for orthodontic treatment by bonding a bracket as a wire holding device to the inner surface of a tooth, FIG. 4 is a perspective view of a conventional bracket, and FIGS. A perspective view and a plan view, FIGS. 6a and 6b are a plan view and a side view of another embodiment of the present invention, FIG. 7 is a perspective view of yet another embodiment of the present invention, and FIGS. 8a, b, 9c, d, and e are side views of still other embodiments of the wire holding device, and FIGS. It is a diagram. Explanation of symbols, 6...Fixed substrate, 7...Bracket body as a wire holding device, 8...Wire insertion groove, 9, 9a...Protrusion part, 10...Vertical hole, 11
...constriction.

Claims (1)

[Scope of Claims] 1. An orthodontic device in which wire holding devices are fixed to the lingual side of each tooth, and orthodontic archwires are sequentially engaged with these wire holding devices to correct the alignment of the teeth, comprising: is characterized in that a wire insertion groove is formed that has a predetermined curvature that matches the shape of the orthodontic archwire and has a wire insertion direction that is approximately perpendicular to the occlusal plane when fixed to each tooth. Orthodontic appliances. 2. An orthodontic device in which wire holding devices are fixed to the lingual side of each tooth, and orthodontic archwires are sequentially engaged with these wire holding devices to correct the alignment of the teeth, wherein the wire holding device is fixed to each tooth. a first wire insertion groove that has a wire insertion direction that is substantially perpendicular to the occlusal plane and that matches the shape of the orthodontic archwire having a predetermined curvature; and a wire that is substantially parallel to the occlusal plane when An orthodontic device characterized in that a second wire insertion groove is formed having an insertion direction.