JP7202723B2 - orthodontic appliance - Google Patents

Description

The present invention relates to an orthodontic device that is worn in the oral cavity of a patient and corrects the patient's dentition.

2. Description of the Related Art Various orthodontic devices have been devised for correcting patient's dentition. For example, in Patent Document 1, a first portion that covers from the crown portion of the tooth to the periphery of the tooth neck portion, a second portion that constitutes a gripping member, and a connection between the first portion and the second portion. An orthodontic device is described which is installed so as to move teeth in a desired direction (see FIG. 1, etc.).

Further, Patent Document 2 discloses an orthodontic device in which shape memory alloys are respectively embedded in the outer peripheral wall, inner peripheral wall and occlusal surface of each of the upper and lower jaws of a U-shaped mouthpiece made of elastic or flexible material. is described (see FIG. 1, etc.).

JP 2015-177969 A JP 2015-150179 A

However, conventional orthodontic devices correct all of a patient's teeth in one direction, and there is a problem in that it is difficult to correct individual teeth in different directions.

Moreover, in order to properly correct each tooth, it is necessary to adjust not only the direction in which the force is applied to each tooth, but also the biasing force for each tooth. there were.

Furthermore, orthodontic appliances having a complicated mechanism are complicated to use and may be difficult for patients to handle.

However, since the alignment of the teeth is a very important factor for appearance, the demand for correcting the alignment of the teeth with high accuracy is increasing year by year.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an orthodontic device that reliably prevents slippage on a patient's teeth.

In order to solve the above-described problems, the orthodontic device of the first aspect of the present invention includes an inner housing that covers teeth, an outer housing that covers the inner housing, an outer housing that penetrates the inner housing, and a pressing portion provided with a cushioning material between the tooth and the tooth, and arranged so as to be able to be pressed against the teeth via the cushioning material by a pressing force originating from the outer housing. and

A second aspect of the present invention is characterized in that, in the orthodontic device of the first aspect, the cushioning material is made of a material made of zirconia.

Further, according to a third aspect of the present invention, in the orthodontic device of the first aspect or the orthodontic device of the second aspect, a pressing force adjusting mechanism capable of adjusting the pressing force of the pressing portion on the teeth is provided. It is characterized by having

Further, according to a fourth aspect of the present invention, in the orthodontic device of the third aspect, the pressing force adjusting mechanism is engaged with the outer housing and the pressing portion.

Further, according to a fifth aspect of the present invention, in the orthodontic device according to the fourth aspect, the pressing portion is formed continuously with the bottom portion provided with the cushioning material and the bottom portion as one end, and the inner housing It comprises a cylindrical portion penetrating through the body and a collar portion connected to the other end of the cylindrical portion and having an outer diameter larger than the outer diameter of the cylindrical portion, and the pressing force adjusting mechanism is screwed into the outer housing. The pressing force of the pressing portion against the teeth can be adjusted by a screw and a compression spring fitted to the screw and having one end in contact with the bottom portion.

According to the orthodontic device of the first aspect of the present invention, the inner housing that covers the teeth, the outer housing that covers the inner housing, and the cushioning material passing through the inner housing and between the teeth are provided. and a pressing portion arranged so as to be able to be pressed against the teeth via the cushioning material by a pressing force originating from the outer housing, so that the orthodontic device does not slip on the patient's teeth. can be reliably prevented, and the patient can use the orthodontic device with peace of mind.

Further, according to the orthodontic device of the second aspect of the present invention, in the orthodontic device of the first aspect, the cushioning material is made of a material made of zirconia, so that the orthodontic device is comfortable for the patient. The patient can use the orthodontic device with confidence.

Further, according to the orthodontic device of the third aspect of the present invention, in the orthodontic device of the first aspect or the orthodontic device of the second aspect, the pressing force of the pressing portion against the teeth can be adjusted. Since the pressing force adjusting mechanism is provided, in addition to the effects of the orthodontic device of the first aspect or the orthodontic device of the second aspect, the dentist or the dental technician can adjust the dentition state that differs from patient to patient. Furthermore, the orthodontic appliance can be easily made together, and the patient can more easily straighten his own teeth with the orthodontic appliance.

Further, according to the orthodontic device of the fourth aspect of the present invention, in the orthodontic device of the third aspect, since the pressing force adjustment mechanism is engaged with the outer housing and the pressing portion, the In addition to the effect of the orthodontic device of aspect 3, the dentist or dental technician can use the orthodontic device in which the pressing force of the pressing portion is appropriately adjusted for each tooth of the patient without replacing the pressing force adjusting mechanism. It can be made more easily and patients can more easily straighten their own teeth with the orthodontic appliance.

Furthermore, according to the orthodontic device of the fifth aspect of the present invention, in the orthodontic device of the fourth aspect, the pressing portion is formed continuously with the bottom portion provided with the cushioning material and the bottom portion as one end. a cylindrical portion penetrating the inner housing; and a collar portion connected to the other end of the cylindrical portion and having an outer diameter larger than the outer diameter of the cylindrical portion. The pressing force of the pressing portion against the tooth can be adjusted by the screw and the compression spring fitted to the screw and having one end abutting on the bottom. It is possible to more easily manufacture an orthodontic device in which the pressing force of the pressing part is appropriately adjusted for each patient's tooth without replacing the orthodontic device, and the patient can more easily adjust his or her own teeth with the orthodontic device. can be corrected to

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall plan cross-sectional view showing a state in which an orthodontic device according to a first embodiment of the present invention is attached to teeth; FIG. 2 is a perspective view showing a state in which the inner housing is inserted into the outer housing in the orthodontic device of the first embodiment; FIG. 4 is a bottom view of the orthodontic device of the first embodiment, with the inner housing inserted into the outer housing. FIG. 2 is a plan view of the orthodontic device of the first embodiment in which the inner housing is inserted into the outer housing. FIG. 2 is a cross-sectional view of the orthodontic device of the first embodiment in which the inner housing is inserted into the outer housing. Fig. 2 is a left side view of the orthodontic device of the first embodiment, with the inner casing inserted into the outer casing. FIG. 4 is a component diagram of a pressing force adjusting mechanism in the orthodontic device of the first embodiment; FIG. 4 is a first explanatory view for explaining a method of manufacturing the pressing force adjusting mechanism in the orthodontic device of the first embodiment; It is a second explanatory view for explaining the manufacturing method of the pressing force adjusting mechanism in the orthodontic device of the first embodiment. It is the 3rd explanatory view for demonstrating the manufacturing method of the pressing force adjustment mechanism in the orthodontic apparatus of 1st Embodiment. It is the 4th explanatory view for demonstrating the manufacturing method of the pressing force adjustment mechanism in the orthodontic apparatus of 1st Embodiment. It is the final explanatory drawing for demonstrating the manufacturing method of the pressing force adjustment mechanism in the orthodontic apparatus of 1st Embodiment. FIG. 4 is a first explanatory diagram for explaining a method of adjusting the orthodontic device of the first embodiment; FIG. 10 is a second explanatory view for explaining the adjustment method of the orthodontic device of the first embodiment; 1 is a cross-sectional plan view of the orthodontic device of the first embodiment; FIG. FIG. 2 is a first explanatory view showing an example of wearing the orthodontic device of the first embodiment; FIG. 4 is a second explanatory view showing an example of wearing the orthodontic device of the first embodiment; It is a longitudinal cross-sectional view of the orthodontic device of the second embodiment. It is a longitudinal cross-sectional view of the orthodontic device of the third embodiment. FIG. 10 is a part diagram of a pressing force adjusting mechanism in the orthodontic device of the fourth embodiment; FIG. 11 is a component diagram of a pressing force adjusting mechanism in the orthodontic device of the fifth embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
First, a first embodiment of the present invention will be described.

FIG. 1 is an overall plan cross-sectional view showing a state in which an orthodontic device according to a first embodiment of the present invention is attached to teeth.

FIG. 2 is a perspective view showing a state in which the inner housing is inserted into the outer housing in the orthodontic device of the first embodiment, FIG. 3 is its bottom view, and FIG. 5 is a cross-sectional view thereof, and FIG. 6 is a left side view thereof.

7A and 7B are parts diagrams of the pressing force adjusting mechanism in the orthodontic device of the first embodiment, and FIGS. 9 is its second explanatory view, FIG. 10 is its third explanatory view, FIG. 11 is its fourth explanatory view, and FIG. 12 is its It is the final explanatory drawing.

Moreover, FIG. 13 is a first explanatory diagram for explaining the adjustment method of the orthodontic device of the first embodiment, and FIG. 14 is a second explanatory diagram thereof.

Furthermore, FIG. 15 is a plan cross-sectional view of the orthodontic device of the first embodiment, FIG. 16 is a first explanatory view showing an example of mounting the orthodontic device of the first embodiment, and FIG. is its second explanatory diagram.

In FIG. 1, the orthodontic device 1 of this embodiment is to be worn on the upper jaw of a patient, and includes an inner housing 5 that directly covers teeth, an outer housing 3 that covers the outer circumference of the inner housing 5, 21 bracket sets 7 (7a1, 7c1, 7d1, 7e1, 7f1, 7g1, 7h1, 7j1, 7q1, 7c2, 7d2, 7e2, 7f2, 7g2, 7h2, 7j2, 7k2, 7m2, 7n2, 7p2 and 7q2) and seven cushioning materials 9 (9b1, 9k1, 9m1, 9n1, 9p1, 9a2 and 9b2) that support teeth on which the bracket set 7 is not arranged ) and

In addition, in the orthodontic device 1 of this embodiment, the patient has 14 teeth (a, b, c, d, e, f, g, h, j, k, m, n, p) without wisdom teeth. and q), but it is applicable even if there are wisdom teeth.

In addition, it is naturally applicable to the case where some teeth are missing, and the orthodontic device in that case does not need to change the form in particular, but a bracket described later on the region of the missing teeth can be applied. 8 may be added.

As shown in FIGS. 2, 4, 5, 13 and 14, the inner housing 5 has a substantially rectangular shape in cross section and a substantially U shape in plan view, and has closed ends. It has a groove shape with an open upper side.

As shown in FIGS. 2 and 5, the side wall surface of the inner housing 5 is formed with a plurality of round holes into which brackets 8, which will be described later, are inserted. Specifically, nine round holes (5a1, 5c1, 5d1, 5e1, 5f1, 5g1, 5h1, 5j1, and 5q1) into which brackets 8 to be described later are inserted are formed on the outer side wall surface of the inner housing 5. Nine round holes (5c2, 5d2, 5e2, 5f2, 5g2, 5h2, 5j2, 5k2, 5m2, 5n2, 5p2 and 5q2) are formed.

As shown in FIGS. 2, 3, 4, 5, 6, 13 and 14, the outer housing 3 has a substantially rectangular shape in cross section and a substantially U shape in plan view that is larger than the inner housing 5. It has the shape of a letter and is in the form of a groove with closed ends and an open top.

As shown in FIGS. 2 and 5, the side wall surface of the outer housing 3 is formed with a plurality of threaded round holes so that the screws 2 described later are screwed therein. Specifically, nine round holes (3a1, 3c1, 3d1, 3e1, 3f1, 3g1, 3h1, 3j1 and 3q1) are formed, and 12 round holes (3c2, 3c2, 3d2, 3e2, 3f2, 3g2, 3h2, 3j2, 3k2, 3m2, 3n2, 3p2 and 3q2) are formed.

In addition, the side surface of the outer housing 3 may be formed with the same width from the front teeth to the back teeth of the patient, but as shown in FIG. By doing so, the discomfort of the patient can be reduced.

A space S is formed between the outer housing 3 and the inner housing 5 to accommodate a bracket 8 and a screw 2 to be described later.

The materials of the inner housing 5 and the outer housing 3 are not particularly problematic as long as they are biocompatible metallic materials and synthetic polymers. Metal materials such as titanium alloys, cobalt alloys, stainless steel, nylon, Synthetic polymer materials such as polypropylene, polyethylene terephthalate, and Teflon (registered trademark) may be used, but in this embodiment, a titanium alloy is used.

As shown in FIG. 7, the bracket set 7 includes a bracket 8, a spring 6 inserted into the protrusion 8d of the bracket, a screw 2 inserted into the spring 6, and a stopper 4 attached to the screw 2. , and a cushioning material 9 arranged at the bottom of the bracket 8 .

In addition, FIG. 7 is a part drawing of the pressing force adjusting mechanism in the orthodontic device of the first embodiment.

The bracket 8 is a circular component in plan view, and includes a disc-shaped bottom portion 8a, a cylindrical cylindrical portion 8b, a disc-shaped flange portion 8c having an outer diameter larger than that of the cylindrical portion 8b, and the center of the bottom portion 8a. A projection 8d extends coaxially with the cylindrical portion 8b.

The material of the bracket 8 is not particularly problematic as long as it is a biocompatible metal material or synthetic polymer. Metal materials such as titanium alloys, cobalt alloys, and stainless steel, nylon, polypropylene, polyethylene terephthalate, Teflon ( A titanium alloy is used in this embodiment, although synthetic polymer materials such as (registered trademark) may also be used.

The spring 6 is a normal cylindrical compression spring and is held between the bottom 8a of the bracket 8 and the stopper 4 in a compressed state.

The material of the spring 6 is not particularly problematic as long as it is made of a biocompatible material and has a spring property, and is a synthetic polymer. Synthetic polymer materials such as terephthalate and Teflon (registered trademark) may be used, but in this embodiment, a titanium alloy is used.

The screw 2 is composed of a screw head 2a and a screw shaft portion 2b, and cooperates with a stopper 4 to bias or release a spring 6. As shown in FIG.

The material of the screw 2 is not particularly problematic as long as it is made of a biocompatible material and has spring properties, such as metal materials such as titanium alloys, cobalt alloys, and stainless steel, nylon, polypropylene, and polyethylene. Synthetic polymer materials such as terephthalate and Teflon (registered trademark) may be used, but in this embodiment, a titanium alloy is used.

The stopper 4 is a ring-shaped member having a round cross section, and functions to bias or release the spring 6 in cooperation with the screw 2 and to prevent the screw 2 from coming out of the outer housing 3 .

The material of the stopper 4 is not particularly problematic as long as it is made of a biocompatible material and has elasticity. In this embodiment, silicon rubber is used.

Further, the cushioning material 9 is arranged at the bottom of the bracket 8 and is a member that directly abuts against the patient's teeth, and its surface roughness is set to be large from the viewpoint of preventing displacement with respect to the teeth.

The material of the cushioning material 9 is not particularly problematic as long as it is a biocompatible metallic material or synthetic polymer, such as zirconia, titanium oxide, lithium disilicate, titanium alloy, cobalt alloy, stainless steel, and the like. metal materials, and synthetic polymer materials such as nylon, polypropylene, polyethylene terephthalate, and Teflon (registered trademark), but in this embodiment, zirconia having a large surface roughness is used.

Here, a method for manufacturing the bracket set 7 will be described with reference to the drawings.

FIG. 8 is a first explanatory view for explaining the manufacturing method of the pressing force adjusting mechanism in the orthodontic device of the first embodiment, FIG. 9 is its second explanatory view, and FIG. FIG. 11 is the fourth explanatory diagram, and FIG. 12 is the final explanatory diagram.

8 to 10, the distance between the outer housing 3 and the inner housing 5 is expanded more than the actual distance.

Moreover, in the description of the manufacturing method of the bracket set 7, the bracket set 7g1 (see FIG. 1) will be taken as an example.

In the manufacturing method of the present bracket set 7, first, as shown in FIG.

On the other hand, after screwing the screw 2 into the hole 3g1 of the outer housing 3, the stopper 4 is moved in the direction of the arrow A, which is the direction of the screw 2, so that the stopper 4 and the screw shaft portion 2b of the screw 2 are engaged. .

In this case, the screw 2 is preferably arranged such that the screw shaft portion 2b is exposed upward to some extent from the surface of the outer housing 3, taking into account the amount of pushing into the bracket 8, which will be described later.

Then, as shown in FIG. 9, the spring 6 is moved in the direction of the arrow B, which is the direction of the bracket 8, so that the spring 6 and the protrusion 8d of the bracket 8 are engaged.

Through the above steps, the bracket set 7 is arranged between the outer housing 3 and the inner housing 5 as shown in FIG. 10. Actually, as shown in FIG. 3 and the inner housing 5 .

Finally, by rotating the screw 2 to move the stopper 4 toward the bracket 8 side, the biasing force of the spring 6 is increased, and the biasing force of the spring 6 moves the bracket 8 in the direction of arrow C, which is the direction of the teeth. Then, as shown in FIG. 12, the setting of the bracket set 7 is completed.

The bracket 8 corresponds to the pressing portion of the present invention, and the outer housing 3, the screw 2, the stopper 4, and the spring 6 function as the pressing force adjusting mechanism of the present invention.

Also, the stopper 4 corresponds to the bulging portion of the present invention, and the flange portion 8c of the bracket 8 corresponds to the restricting portion of the present invention.

In the description of this manufacturing method, as shown in FIG. 12, the screw head 2a of the screw 2 is described as being in contact with the surface of the outer housing 3. 2 have different amounts of rotation.

That is, when the movement distance of the bracket 8 with respect to the patient's teeth is small, the screw head 2a of the screw 2 is exposed on the surface of the outer housing 3, and the bracket 8 moves with respect to the patient's teeth. When the moving distance of is increased, the amount of exposure of the screw head 2a from the surface of the outer housing 3 is decreased along with the amount of movement.

In the description of this manufacturing method, the cushioning material 9 is adhered to the bottom surface of the bracket 8, but the orthodontic device 1 can be attached to the patient's teeth without bonding the cushioning material 9 to the bottom surface of the bracket 8. It may be arranged so as to be sandwiched between the bracket 8 and the patient's teeth when worn.

Next, an adjustment method for fitting the orthodontic device 1 of this embodiment to the patient's teeth will be described with reference to the drawings.

FIG. 13 is a first explanatory view for explaining the adjustment method of the orthodontic device of the first embodiment, and FIG. 14 is a second explanatory view thereof.

In the description of the method of adjusting the orthodontic device 1, the bracket set 7g1 and the bracket set 7g2 (see FIG. 1) will be taken as examples.

In addition, the bracket set 7g1 in the description of this adjustment method is composed of a bracket 8g1, a spring 6g1, a screw 2g1, a stopper 4g1, and a cushioning material 9g1.

The bracket 8g1 includes a bottom portion 8ga1, a cylindrical portion 8gb1, a flange portion 8gc1, and a projection portion 8gd1. The screw 2g1 includes a screw head portion 2ga1 and a screw shaft portion 2gb1.

On the other hand, the bracket set 7g2 in the description of this adjustment method is composed of a bracket 8g2, a spring 6g2, a screw 2g2, a stopper 4g2, and a cushioning material 9g2.

The bracket 8g2 is composed of a bottom portion 8ga2, a cylindrical portion 8gb2, a collar portion 8gc2, and a projection portion 8gd2, and the screw 2g2 is composed of a screw head portion 2ga2 and a screw shaft portion 2gb2.

In order to fit the orthodontic device 1 of this embodiment to the patient's teeth, first, as shown in FIG. By setting the state, a gap is formed between each bracket set and the patient's tooth, and the orthodontic device 1 is moved toward the patient's gum G and set on the patient's tooth g.

Then, as shown in FIG. 14, by rotating the screw 2g1 set in the bracket set 7g1 and moving the stopper 4g1 toward the bracket 8g1, the biasing force of the spring 6g1 is increased, and the biasing force of the spring 6g1 buffers. The bracket 8g1 is brought into contact with the tooth via the material 9g1.

On the other hand, as shown in FIG. 14, for the bracket set 7g2, the screw 2g2 set in the bracket set 7g2 is also rotated to move the stopper 4g2 toward the bracket 8g2, thereby increasing the biasing force of the spring 6g2. The biasing force of 6g2 causes the bracket 8g2 to come into contact with the tooth via the cushioning material 9g2. It should be noted that a suitable biasing force against the patient's teeth is approximately 25 gf to 100 gf.

By adjusting the bracket set for each tooth of the patient in this way, the orthodontic device 1 as shown in FIG. 15 is completed.

In addition, FIG. 15 is a plan sectional view of the orthodontic device 1 of the first embodiment.

In the present embodiment, as shown in FIG. 15, cushioning materials 9 are arranged at portions of the patient's teeth where the bracket set 7 is not arranged. This is used not only for teeth that do not need to be straightened, but also for straightening teeth with the inner housing 5 alone.

In this embodiment, seven cushioning materials 9 are directly arranged in the inner housing 5, specifically, cushioning materials 9b1, 9k1, 9m1, 9n1, 9p1, 9a2 and 9b2 are arranged in the inner housing 5. It is

Finally, a mounting method for mounting the orthodontic device 1 described above on a patient's teeth will be described with reference to the drawings.

FIG. 16 is a first explanatory view showing a mounting example of the orthodontic device of the first embodiment, and FIG. 17 is a second explanatory view thereof.

As shown in FIG. 16, the orthodontic device 1 has a rubber band 24a made of a biocompatible material between a screw 22a inserted into the patient's upper jaw J and a hook 26a formed on the bottom surface of the outer housing 3. It is mounted on the patient's teeth by bridging a rubber band 24b made of a biocompatible material between the screw 22b inserted into the patient's upper jaw J and the hook 26b formed on the bottom surface of the outer housing 3. ing.

In addition, as shown in FIG. 17, the orthodontic device 1 of this embodiment has a biocompatible structure between the screw 22c inserted into the patient's upper jaw J and the hook 26c formed on the inner side surface of the inner housing 5. It may be attached to the patient's teeth by spanning a rubber band 24c made of a flexible material.

According to the orthodontic device 1 of this embodiment, the inner housing 5 covering the teeth, the outer housing 3 covering the inner housing 5, and the inner housing 5 are penetrated and arranged so as to be able to be pressed against the teeth. and a pressing force adjusting mechanism capable of adjusting the pressing force of the bracket 8 against the teeth, the dentist or dental technician can easily adjust the teeth according to the dentition condition that differs from patient to patient. Braces can be made and patients can easily straighten their own teeth with the braces.

Further, according to the orthodontic device 1 of the present embodiment, the pressing force adjusting mechanism includes the outer housing 3, the screw 2 screwed to the outer housing 3, and the compression spring fitted to the screw 2. 6, a dentist or a dental technician can easily fabricate an orthodontic device in which the pressing force of the pressing portion is adjusted for each tooth of the patient, and the patient can adjust the dentition. Orthodontic appliances make it easier to straighten one's own teeth.

Further, according to the orthodontic device 1 of the present embodiment, the screw 2 has an outer diameter larger than the inner diameter of the screw hole 3a1 of the outer housing 3 and the outer diameter of the compression spring 6 in the middle of the screw shaft portion 2b. Since the stopper 4 is provided, the pressing force of the bracket 8 against the tooth can be effectively applied.

Further, according to the orthodontic device 1 of the present embodiment, the stopper 4 is detachable with respect to the screw 2, so the pressing force adjusting mechanism can be easily manufactured.

Further, according to the orthodontic device 1 of the present embodiment, the cushioning material 9 is arranged in the region of the bracket 8 that contacts the teeth, and the surface roughness is higher than that of other regions. can be reliably prevented from slipping against the patient's teeth, and the patient can use the orthodontic device with confidence.

Further, according to the orthodontic device 1 of the present embodiment, the cushioning material 9 made of zirconia is formed in the region of the bracket 8 that contacts the teeth, so that the orthodontic device is Slippage can be reliably prevented, and the patient can use the orthodontic device with confidence.

Furthermore, according to the orthodontic device 1 of the present embodiment, the bracket 8 is provided with the flange portion 8c that restricts its movement, so that the bracket 8 can be prevented from coming off the inner housing 5. can.

(Second embodiment)
Next, a second embodiment of the invention will be described. FIG. 18 is a longitudinal sectional view of the orthodontic device of the second embodiment.

In addition, in this embodiment, the same number is attached|subjected about the same member as 1st Embodiment, and description is abbreviate|omitted. The overall plan view of the orthodontic device 11 of this embodiment is the same as FIG. A cross-sectional view of the state in which the body is inserted into the outer housing is similar to FIG.

In FIG. 18, the orthodontic device 11 of this embodiment is to be worn on the patient's upper jaw, and includes an inner housing 15 that directly covers the teeth, an outer housing 13 that covers the outer circumference of the inner housing 15, 21 bracket sets 7 (7a1, 7c1, 7d1, 7e1, 7f1, 7g1, 7h1, 7j1, 7q1, 7c2, 7d2, 7e2, 7f2, 7g2, 7h2, 7j2, 7k2, 7m2, 7n2, 7p2 and 7q2) and seven cushioning materials 9 (9b1, 9k1, 9m1, 9n1, 9p1, 9a2 and 9b2) that support the teeth on which the bracket set 7 is not arranged ) and

The orthodontic device 11 of this embodiment differs from the orthodontic device 1 of the first embodiment in the form of the outer housing and the inner housing. That is, the outer housing 3 of the first embodiment was configured to cover the entire inner housing 5, but the outer housing 13 of the present embodiment covers the inner housing 15 but does not cover the bottom surface thereof. A substantially U-shaped hole in a plan view into which the bottom surface of the inner housing 15 can be inserted is formed in the inner housing 15 .

When the inner housing 15 of the present embodiment is inserted into the outer housing 13, both bottom surfaces are arranged on the same plane.

Therefore, the orthodontic device 11 of this embodiment can be made shorter in height than the orthodontic device 1 of the first embodiment, and the entire orthodontic device can be constructed compactly. It is possible to reduce discomfort felt by the patient when it is attached to the patient's teeth.

(Third embodiment)
Next, a third embodiment of the invention will be described.
FIG. 19 is a longitudinal sectional view of the orthodontic device of the third embodiment.

In addition, in this embodiment, the same number is attached|subjected about the same member as 1st Embodiment, and description is abbreviate|omitted. 1, and the plan view of the orthodontic device 21 of this embodiment with the inner casing inserted into the outer casing is the same as FIG.

In this embodiment, the tooth e and the bracket set 7e1 and the bracket set 7e2 (see FIG. 1) arranged against the tooth e will be described as an example.

Moreover, in this embodiment, the bracket set 7e1 is composed of a bracket 8e1, a spring 6e1, a screw 2e1, a stopper 4e1, and a cushioning material 9e1.

The bracket 8e1 includes a bottom portion 8ea1, a cylindrical portion 8eb1, a flange portion 8ec1, and a projection portion 8ed1. The screw 2e1 includes a screw head portion 2ea1 and a screw shaft portion 2eb1.

On the other hand, the bracket set 7e2 in this embodiment is composed of a bracket 8e2, a spring 6e2, a screw 2e2, a stopper 4e2, and a cushioning material 9e2.

The bracket 8e2 is composed of a bottom portion 8ea2, a cylindrical portion 8eb2, a flange portion 8ec2, and a projection portion 8ed2, and the screw 2e2 is composed of a screw head portion 2ea2 and a screw shaft portion 2eb2.

In FIG. 19, the orthodontic device 21 of this embodiment is to be worn on the patient's upper jaw, and includes an inner housing 15 that directly covers the teeth, an outer housing 13 that covers the outer circumference of the inner housing 15, 21 bracket sets 7 (7a1, 7c1, 7d1, 7e1, 7f1, 7g1, 7h1, 7j1, 7q1, 7c2, 7d2, 7e2, 7f2, 7g2, 7h2, 7j2, 7k2, 7m2, 7n2, 7p2 and 7q2) and seven cushioning materials 9 (9b1, 9k1, 9m1, 9n1, 9p1, 9a2 and 9b2) that support teeth on which the bracket set 7 is not arranged ) and

In the bracket 8 of the orthodontic device 21 of this embodiment, the heights of the bracket 8e1 and the bracket 8e2 are different. That is, the bracket 8e1 in FIG. 19 presses the lower portion of the tooth e, whereas the bracket 8e2 presses the upper portion of the tooth e more than the pressing position of the bracket 8e1.

The position of the tooth to be pressed depends on the condition of the tooth to be corrected. In some cases, the outer bracket set presses lower than the inner bracket set.

According to the orthodontic device 21 of this embodiment, a plurality of brackets 8 are provided for each tooth, and at least one bracket 8 has a different height relative to the teeth compared to other brackets. An orthodontist can easily manufacture an orthodontic device that enhances the orthodontic effect of the patient's teeth by changing the pressing portion of the bracket for each patient's tooth, and the patient can use the orthodontic device to improve his/her self. Teeth can be straightened more easily.

(Fourth embodiment)
Next, a third embodiment of the invention will be described.
FIG. 20 is a part diagram of the pressing force adjusting mechanism in the orthodontic device of the fourth embodiment.

In addition, in this embodiment, the same number is attached|subjected about the same member as 1st Embodiment, and description is abbreviate|omitted. Also, the overall plan view of the orthodontic device 31 of this embodiment is the same as FIG. 1, and the plan view of the state in which the inner housing is inserted into the outer housing is the same as FIG.

In FIG. 20, the orthodontic device 31 of this embodiment is attached to the patient's upper jaw, but the shape of the bracket is different from that of the bracket 7 of the first embodiment.

The bracket 18 of the present embodiment is a circular component in plan view, comprising a bottom portion 18a longer than the bottom portion 8a of the first embodiment, a cylindrical portion 18b, and a disk-shaped portion having a larger outer diameter than the cylindrical portion 18b. It consists of a flange portion 18c and a projection portion 18d extending from the bottom portion 18a coaxially with the cylindrical portion 18b.

The bracket 18 of this embodiment adjusts the distance between the patient's teeth and the inner housing by grinding the bottom portion 18a of the bracket 18, which improves convenience when adjusting the orthodontic device. It is something that makes

The material of the bracket 18 is the same as that of the bracket 8, and there is no particular problem as long as it is a biocompatible metallic material or synthetic polymer. Synthetic polymer materials such as polypropylene, polyethylene terephthalate, and Teflon (registered trademark) may be used, but in this embodiment, a titanium alloy is used.

According to the orthodontic device 31 of this embodiment, the pressing force of the bracket 18 against the teeth can be adjusted by adjusting the length of the bottom portion 18a of the bracket 18, so that the pressing force adjusting mechanism can be manufactured more easily. can do.

(Fifth embodiment)
Finally, a fifth embodiment of the present invention will be described. FIG. 21 is a part diagram of the pressing force adjusting mechanism in the orthodontic device of the fifth embodiment.

In addition, in this embodiment, the same number is attached|subjected about the member same as 1st Embodiment, and description is abbreviate|omitted. 1, and the plan view of the orthodontic device 41 of this embodiment with the inner casing inserted into the outer casing is the same as FIG.

In FIG. 21, the orthodontic device 41 of this embodiment is attached to the patient's upper jaw, but the shape of the screw is different from that of the screw 2 of the fourth embodiment.

The screw 12 of this embodiment is integrally formed with a screw head 12a, a screw shaft portion 12b, and a bulging portion 12c formed in the middle of the screw shaft portion 12b. or release.

The screw 12 of this embodiment is formed smaller than the screw head 2a of the first embodiment so that the screw head 12a can be inserted into the hole of the outer casing 3. As shown in FIG.

The material of the screw 12 is not particularly problematic as long as it is made of a biocompatible material and has a spring property and a synthetic polymer, such as a titanium alloy, a cobalt alloy, and a stainless steel. , nylon, polypropylene, polyethylene terephthalate, Teflon (registered trademark), etc., but titanium alloy is used in this embodiment.

According to the orthodontic device 41 of this embodiment, the screw 12 has a bulge having an outer diameter larger than the inner diameter of the screw hole 3a1 of the outer housing 3 and the outer diameter of the compression spring 6 in the middle of the screw shaft portion 12b. Since the portion 12c is provided, the pressing force of the bracket 18 against the teeth can be effectively applied.

1, 11, 21, 31, 41... Orthodontic devices 2, 12... Screws 3, 13... Outer housing 4... Stoppers 5, 15... Inner housing 6... spring (compression spring)
8, 18 Bracket 9 Cushioning material

Claims (5)

an inner housing covering the teeth;
an outer housing that covers the inner housing;
a pressing portion penetrating through the inner housing, provided with a cushioning material between itself and the teeth, and arranged so as to be able to press against the teeth via the cushioning material by a pressing force originating from the outer housing; ,
An orthodontic device comprising: The orthodontic device according to claim 1, wherein the cushioning material is made of zirconia. 3. The orthodontic device according to claim 1, further comprising a pressing force adjusting mechanism capable of adjusting the pressing force of said pressing portion against said teeth. 4. The orthodontic device according to claim 3, wherein the pressing force adjusting mechanism is engaged with the outer casing and the pressing portion. The pressing portion includes a bottom portion provided with the cushioning material, a cylindrical portion continuously formed with the bottom portion as one end, penetrating the inner casing, and the cylindrical portion connected to the other end of the cylindrical portion. a collar portion having an outer diameter larger than the outer diameter,
The pressing force adjusting mechanism adjusts the pressing force of the pressing portion against the teeth by means of a screw threaded into the outer housing and a compression spring fitted to the screw and having one end in contact with the bottom portion. 5. An orthodontic device according to claim 4, characterized in that it is possible.

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