JPS61288854A - Orthodontic treatment instrument of silicone resin with traction instrument and its production - 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 [Field of Industrial Application] The present invention relates to an orthodontic treatment instrument that can effectively treat patients with misaligned teeth in a short period of time, and a method for manufacturing the same.

[Conventional technology and problems]

In the conventional orthodontic treatment method, a metal band with an attachment attached is fitted to the tooth, fixed to the tooth using cement, and a metal wire is passed through the band to move the tooth. In this case, the orthodontic force (the stress that actually moves the teeth) is mainly made using the elasticity of the metal wire itself, and this orthodontic treatment device is generally called a full band tapping device and is currently widely used.

However, the treatment technique of this full-band ring device requires skill and effort, such as special skills to accurately fit the metal band to the teeth and complicated methods of bending the metal wire, which not only causes pain to the patient, but also causes oral hygiene problems due to the loss of gold pieces. Due to the adhesion, it not only causes complications such as cavities and periodontal disease, but also often places a psychological burden on the patient, and the treatment costs are high.

As a means of solving the above drawbacks, a mouthpiece-type orthodontic treatment instrument made of polyurethane resin has been developed as shown in Japanese Patent Publication No. 53-32998 filed by the same inventor as the present inventor. Since the piece uses only the elasticity of the polyurethane resin material to straighten the teeth, the orthodontic force is small, so it is only possible to perform partial treatment on a few teeth, and the treatment range is extremely narrow. In addition, since the normal dentition is used as a fixation source for applying orthodontic force, there is a problem in that unnecessary force is applied to the normal dentition.

[Purpose of the invention]

An object of the present invention is to provide an orthodontic treatment device made of a silicone resin material and a traction device, which solves all of the above-mentioned problems, and a method for manufacturing the same.

[Structure of the invention]

The first invention forms a number of concave shapes for fitting the tooth row to be corrected in orthodontically correct positions on the occlusal surface of the lower jaw of an orthodontic treatment instrument having a substantially U-shaped plane. , several ventilation holes are drilled in the front part between the upper and lower concave molds, the whole is made of elastic transparent material with silicone resin, and the silicone resin between the upper and lower concave molds is made of metal: g;'! l! IB II/7'1 No No Kigi h No. 9-1h No. 1 Harm 21 A different outer paw is arranged so as to be substantially parallel to the outer surface of the silicone resin material at a constant distance, and the outer paw of the outer paw is This is an orthodontic treatment instrument made of silicone resin and used as a traction instrument, characterized by a hook-shaped rear end.

The second invention is to take an impression of each row of teeth in the lower jaw of a patient with malocclusion, create original upper and lower jaw models made of plaster, and replace the mandibular body of the patient with malocclusion with the maxillary body. The occlusal relationship of the upper and lower teeth is taken using a wax bite while the upper and lower teeth are guided to the normal position.The wax bite is bitten into the original upper and lower jaw model, and the model is used to fabricate dentures. Each tooth showing malposition on the original upper and lower jaw models is divided one by one at a distance of v3AJ from the base, and the divided teeth are artificially attached to the orthodontic treatment. The entire tooth row is rearranged into a normal occlusion by moving the teeth to the normal occlusion position, and the split teeth are fixed with wax on the base of the original supra-mandibular model, and the occlusal relationship of the model with the normal dentition is adjusted. By taking impressions of the dentition of the lower jaw in the soil again from the original lower jaw model, which was taken using a wax bite and the alignment changed, a working upper and lower jaw model made of plaster was created. Attach the wax bite of the tooth row to the working upper and lower jaw models.

In this state, the inner bow part of the traction device consisting of an inner bow and an outer bow made of metal wire is buried in the wax bite, and the attachment is fixed with wax, and the A mouthpiece mold is formed with paraffin wax around the inner bow, and this mouthpiece mold with a traction device is embedded together with the working upper and lower jaw models in plaster in a split mold container. Silicone with a traction device characterized by heating it to melt and discharge only the paraffin wax portion out of the container, injecting or filling the melted and discharged mouthpiece-shaped negative mold with silicone resin, and polymerizing it under pressure and heat. This is a method for manufacturing orthodontic treatment instruments made of resin material.

[Embodiments of the invention]

To explain the present invention with reference to the drawings, FIG. 1 is a front view of the treatment instrument of the present invention, FIG. 2 is an open plan view, and FIG. 2 is a traction device, 2a is an inner bow of the traction device, 2b is an outer bow of the traction device, 3 is a hook portion at the rear tip of the outer bow, 4 is a ventilation hole for breathing when in use, 5
is a concave shape for inserting the tooth row.

The inner bow 2a is embedded between the upper and lower occlusal surfaces of the treatment instrument 1, and the outer bow 2b is disposed outside the treatment instrument 1, and the outer bow 2b is spaced apart from the outer surface of the treatment instrument 1 by a certain distance. Since they are arranged substantially parallel to each other, they come out of the oral cavity (see Figures 4 to 6).

In actual use, as shown in Figure 3, depending on the type of malocclusion and the purpose of treatment, the outer paw should be angled upward at 20° (applied to maxillary prognathia) or downward at 20° relative to the occlusal plane.
0° (applicable to mandibular prognathism), and the former involves fixing a locking device 19 to the head, hooking a rubber band 21 to it, and pulling it upward after passing (see Figure 4); the latter. A locking device 19 is fixed to the neck, and a rubber band 21 is hooked onto this to pull it downward after passing (see Figure 5). Depending on the case, it may also be pulled horizontally backwards with respect to the occlusal plane. (See FIG. 6). In this case, the angle adjustment tool 20 attached to the locking tool 19 is connected to the rubber band 21t. The traction force of the rubber 21 is usually 600 to 800 g, but the value is appropriately selected depending on various conditions.

Next, to explain the second aspect of the present invention in order, FIG. 7 is a side view of the upper and lower dentition of a patient with prognathic protrusion (protruding teeth).
This is an example of a malocclusion in which the front teeth of the upper dental arch 6 protrude forward by a distance than the front teeth of the lower dental arch 7. Fig. 8 is intended to normalize the positional relationship between the upper and lower jaw bones. After artificially moving the lower dental arch forward (by intentionally moving the body of the mandible forward) and improving the anteroposterior positional relationship between the upper and lower jawbones, the upper and lower dental arches are cut using the wax bite 8a. It is a side view of the first position of the lower jaw being taken. For the purpose of making models of the upper and lower dentition, individual impressions of the dentition were taken, and original upper and lower jaw models 9.10 of both dentition were made using plaster. The obtained wax bite 8a is then bitten into this model (this original upper and lower jaw model has been restored to the same state as the actual oral cavity).

Next, attach the original overwritten mandible model 9.10 made of plaster fixed with the wax bite 8a to the articulator 11 using plaster (see Figure 9), then remove the wax bite 8a and create the original overwritten lower jaw model 9. , separate the malpositioned tooth from the base and vertically divide it to create divided teeth 12 (see Figure 1θ), and rearrange the divided teeth 12 to the normal position to create an individual normal occlusion that is ideal for correction. Complete the 11th
12), another wax bite 8b is obtained in this state. Impressions of the upper and lower jaw rows are taken again from the rearranged and restored upper and lower jaw models 9 and 10 to obtain working upper and lower jaw models 13 and 14 made of plaster (see FIG. 13).

The above-mentioned wax bite 8b is bitten and fixed on the working upper and lower jaw models 13 and 14, and the inner bow 2a of the traction device 2 is embedded in the wax bite 8b (
(See FIG. 14), and then apply paraffin wax 15 around the wax wax 8b (see FIG. 15) so that it has the same shape as the final shape (mouthpiece shape) of the treatment instrument l (see FIG. 15).

The paraffin wax product (mouthpiece type) shown in the previous figure,
Plaster is embedded in a flask 16 for making dentures (see Fig. 16), and after the plaster hardens, the flask 16 is placed in warm water (60
Heat the paraffin wax at 15°C for 5 minutes.
The flask is divided and the softened paraffin wax is removed to create a negative mold 18 of the treatment instrument 1 (see FIG. 17).

After the silicone resin 17 is injected or filled into the negative mold 18 made of this plaster 22 (see FIG. 18).

Pressurize with a press 23 (see Figure 19), heat polymerize (1
00°C for 1 hour) and polish the product to complete the treatment instrument I.

When filling with the silicone resin 17, use a soft silicone resin with high elasticity for areas where the teeth move a lot, and a hard silicone resin with low elasticity for areas where the teeth move less, for even more therapeutic effects. It increases.

〔Effect of the invention〕

Therefore, the present invention provides a strong orthodontic force due to the synergistic effect of the therapeutic effect due to the elasticity of the silicone resin and the therapeutic effect due to the traction force of the traction device. For patients, it is also possible to control the growth of the jawbone through the teeth, and teeth have the effect of inhibiting overgrowth of the bone and actively promoting the growth of the bone of undergrowth. The orthodontic treatment is efficient and effective, and the treatment period is short.

Furthermore, since the appliance of the present invention is a removable orthodontic appliance, it is hygienic as it does not cause cavities or gingivitis, and patients only need to use it at night while sleeping, which reduces the mental burden of using the appliance. It has the following advantages.

[Brief explanation of the drawing]

Figure 1 is a front view of the treatment instrument, Figure 2 is an open plan view, Figure 3 is a side view of the same, and Figures 4 to 6 are various types of fixation sources for the head or neck used on patients. It is a locking tool, and the seventh
The figure is a side view of the patient's upper and lower dentition, and Figure 8 shows the state in which the anteroposterior positional relationship of the upper and lower jaw bones has been improved, and the first position of the upper Φ mandible has been obtained with a wax bite. side view,
Figure 9 is a side view of the original upper and lower jaw models attached to the articulator using plaster, Figure 1θ is a plan view during the creation of split teeth, and Figure 11 is the original state with the original upper and lower jaw models attached to the articulator. Front view of the original upper and lower jaw models after alignment is completed, No. 12
The figure is a side view of the first position of the lower jaw model in soil for working with the wax bite on the same articulator, Figure 13 is a plan view of the upper and lower jaw models for work, and Figure 14 is inside the wax bite. Figure 15 is a front view of the state shown in the previous figure with paraffin wax filled with it, and Figure 16 is a side view of the inner bow of the traction device embedded in the flask. Fig. 17 is a plan view of the upper and lower lids after the paraffin wax has been melted and removed from the flask, and Fig. 18 is a perspective view of the installed state, with silicone resin placed in the negative mold and the upper and lower lids separated. FIG. 19 is a plan view of the filled state and a perspective view of the state in which the upper and lower lids are pressed together. l... Treatment instrument 2... Traction device 2a... Inner bow 2b... Outer bow 3... Hook portion 4...・・ Ventilation hole 5 ・・ Concave 6 ・・ Maxillary dental arch 7 ・・ Mandibular dental arch intersection ・・ Distance 8a, 8b ・・・・ Wax bite 9.10...
...Original upper and lower jaw models 11... Articulator 12... Minutes 11il teeth 13.14... Working upper and lower jaw models 15...
... Paraffin wax 16 ... Flask 17 ... Silicone resin 18 ... Negative mold 19 ... Locking tool 20 ... Angle Adjustment tool 21... Rubber band 22... Plaster 23... Press device

Claims (1)

[Scope of Claims] 1. An orthodontic treatment device having a substantially U-shaped planar shape with a number of concave shapes for fitting the orthodontically corrected tooth row into orthodontically correct positions on the upper and lower occlusal surfaces. Several ventilation holes were made in the front part between the upper and lower concave molds, and the entire body was made of silicone resin to make it elastic and transparent.The inner bow of the metal traction device was placed in the silicone resin between the upper and lower concave molds. The outer bow of the traction device is disposed so as to be substantially parallel to the outer surface of the silicone resin material at a constant distance, and the rear tip of the outer bow is bent into a hook shape. An orthodontic treatment device made of silicone resin with a traction device. 2. Take impressions of the upper and lower dentition of the patient with malocclusion, create original plaster models of the upper and lower jaws, and compare the mandibular body of the patient with malocclusion to the normal maxillary body. The occlusal relationship between the upper and lower teeth is taken using a wax bite while guided to the original position, and the original upper and lower jaw models are bitten with the wax bite, and the models are used as an articulator for making dentures. By separating the individual teeth that are attached accurately and showing malposition on the original upper and lower jaw models one by one from the base, and then artificially moving the divided teeth to orthodontically correct positions. The entire dentition is rearranged to normal occlusion, the split teeth are fixed with wax on the base of the original upper and lower jaw models, and the occlusal relationship of the models with normal dentition is recorded using a wax bite. Then, by taking impressions of the upper and lower dentition again from the original upper and lower jaw models after the rearrangement, a working upper and lower jaw model made of plaster was created, and the wax bite of the normal dentition was recorded as above. The upper and lower jaw models for work are engaged, and in this state, the inner bow part of the traction device, which consists of an inner bow and an outer bow made of metal wire, is buried in the wax bite and fixed with wax, and then the work is performed. A mouthpiece mold is formed with paraffin wax around the inner bow between the working upper and lower jaw models, and this mouthpiece mold with a traction device is placed together with the working upper and lower jaw models in plaster in a split mold container. Then, the split container was heated to melt and discharge only the paraffin wax portion out of the container, and the melted and discharged mouthpiece-shaped negative mold was injected or filled with silicone resin, which was then pressure-thermopolymerized. A manufacturing method for an orthodontic treatment device made of silicone resin with a characteristic traction device.