JP6986254B2 - Removable orthodontic appliance - Google Patents

Description

The present invention relates to a removable orthodontic appliance that can be attached and detached by the patient himself, and more particularly, to an orthodontic appliance that improves occlusion in molars and the like.

Conventionally, as an orthodontic device, a removable orthodontic device, a fixed device, and the like have existed. Of these orthodontic appliances, the removable orthodontic appliance is designed so that the patient can easily put on and take off the orthodontic appliance, while the fixed orthodontic appliance has an arch wire passed through a bracket fixed to the tooth. It is made to be able to correct. Of these orthodontic appliances, removable orthodontic appliances are often preferred by patients because they can be easily attached and detached by the patient.

By the way, when correcting teeth with a removable orthodontic appliance, a floor orthodontic appliance is often used among various orthodontic appliances. This floor orthodontic appliance presses the left and right resin blocks provided on the inside and outside of the tooth, the wire passed through the resin block, and the resin block provided at the opposite position inside the tooth toward the outside. It is configured by providing a pressing portion to be pressed (see Patent Document). If such an orthodontic appliance is used, the dentition is pressed from the inside to the outside of the oral cavity by adjusting the pressing part while firmly holding the tooth with a resin block or wire, and the tooth or jaw is pressed. You will be able to make corrections.

Japanese Unexamined Patent Publication No. 2006-000489

However, when performing correction using such a removable correction device, there are the following problems.

That is, when the tooth is corrected by using such a removable orthodontic device, a wire or a resin block covering the occlusal surface of the tooth is provided, so that the occlusal condition of the molar tooth or the like becomes worse. It ends up. At this time, in particular, if the resin block is provided so as to cover the occlusal surface, the resin block may be cracked and may be mixed in the meal. For this reason, it is conceivable not to cover the occlusal surface of such teeth, but in such a case, the gripping force of the teeth in the resin block or wire is weakened, and the pressing portion of the teeth causes the teeth. When the pressing force is applied from the inside to the outside, there is a problem that the orthodontic appliance shifts to the back along the dental arch that spreads toward the back.

Therefore, the present invention has been made by paying attention to the above-mentioned problems, so that the occlusal surface of the tooth is not covered and a pressing force is applied from the inside to the outside of the oral cavity to perform correction. It is an object of the present invention to provide a removable orthodontic appliance.

That is, in order to solve the above-mentioned problems, the present invention passes through the outer resin block provided on the outside of the tooth, the inner resin block provided on the inside of the tooth, and the outer resin block, and orbits the inner part of the tooth. A removable orthodontic appliance provided with a wire that passes through the inner resin block and a pressing portion that applies pressing force from the inside to the outside to the inner resin blocks provided at opposite positions on the left and right sides of the oral cavity. In, a bent portion is provided in which a wire protrudes from the outer resin block or the inner resin block to the labial side, and the bent portion is detachably engaged with the bent portion using the fixed portion fixed to the tooth, and the wire is moved to the back of the wire. It is intended to regulate the movement of.

With this configuration, the bent portion of the wire can be locked to the anchored portion fixed to the tooth to restrict the movement of the wire to the back, whereby the occlusal surface of the tooth is not covered. , You will be able to correct your teeth.

Further, in such an invention, the fixing portion is composed of a button fixed to the side surface of the tooth with an adhesive.

With this configuration, the movement of the orthodontic appliance can be restricted by simply attaching a small button to the side surface of the tooth.

Alternatively, the fixing portion may be composed of a band fitted so as to go around one tooth.

With this configuration, for example, even if the button cannot be attached due to the state of tooth alignment, the wire is locked by the protrusion provided on the band to regulate the movement of the orthodontic appliance to the back. You will be able to do it.

In addition, the tip of the bent portion is positioned between the adjacent teeth.

With this configuration, it is possible to restrict the movement to the back by locating the tip portion between the adjacent teeth and bending the tip portion in the gap direction.

According to the present invention, the outer resin block provided on the outer side of the tooth, the inner resin block provided on the inner side of the tooth, the outer resin block, and the inner resin block orbiting the inner part of the tooth are passed. The outer resin block or the outer resin block or A bent portion is provided so that the wire protrudes from the inner resin block to the labial side, and the bent portion is detachably engaged with the bent portion using the fixed portion fixed to the tooth so as to restrict the movement of the wire to the back. Therefore, it becomes possible to correct the tooth without covering the occlusal surface of the tooth.

A perspective view showing a state in which the removable orthodontic appliance according to the embodiment of the present invention is attached. Plan view in the same form The figure which shows the pressing part in another embodiment The figure which shows the fixed part and the bent part in the same form. The figure which shows the band in the same form

Hereinafter, an embodiment of the removable orthodontic appliance 1 in the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the removable orthodontic appliance 1 passes through an outer resin block 2 and an inner resin block 3 provided on the outer side and the inner side of the dentition to be corrected, respectively, and an outer resin block 2. A wire 4 that circulates behind the back teeth and passes through the inner resin block 3 and a pressing portion 5 that presses the inner resin block 3 provided at the left and right opposite positions in the oral cavity outward. Characteristically, as shown in FIG. 4, the wire 4 is projected from the front of the outer resin block 2 toward the labial side to form a bent portion 42, and the bent portion 42 is fixed to the tooth. The wire 4 is detachably engaged with the fixed portion 6 so as not to move to the back. Hereinafter, a specific configuration of the removable orthodontic appliance 1 according to the present embodiment will be described in detail.

The outer resin block 2 and the inner resin block 3 constituting the removable corrective device 1 are provided so as to cover the outer side (buccal side) and the inner side (lingual side) of the dentition to be corrected, respectively. It is composed of a thermoplastic resin such as acrylic resin, polycarbonate resin, polyester resin, synthetic resin of dioptyl butarate and cellulose acetate, and vinyl acetate resin. Of these, acrylic resin is highly processable, tasteless, odorless, non-toxic, and has strength enough to withstand daily use, so it can be suitably used as a member for covering teeth, and this acrylic resin. Is transparent, so that coloring can be freely performed, and by making the outer resin block 2 and the inner resin block 3 colorless and transparent, the state of the inner teeth can be easily visually recognized. On the other hand, when this acrylic resin is colored to be flesh-colored or white, there is an advantage that by hiding the wire 4, it is possible to make the structure indistinguishable from normal gums and teeth.

The wire 4 passed through the outer resin block 2 and the inner resin block 3 is provided so as to orbit the peripheral portion 43 behind the tooth from the outer side of the tooth and pass through the inner side of the tooth, and the tip portion thereof is bent. It is configured to let you. Of the tip portions, the tip portion 41a of the wire 4 provided on the inner resin block 3 is provided in a state of being molded inside the inner resin block 3 so that the metal portion does not directly hit the teeth or gums. On the other hand, the tip portion 41b of the wire 4 passing through the outer resin block 2 is provided so as to project forward from the outer resin block 2 and forms a bent portion 42 that bends upward from the bent portion 42, and is a loop-shaped portion at the tip. Is made to enter the gap between adjacent teeth. A rubber band or the like is locked to this loop-shaped portion so as to rotate around the lip portion and pull the left and right tip portions 41b forward.

When the wire 4 is prevented from moving to the back by using the bent portion 42, the fixing portion 6 is provided on the side surface of the tooth to lock the wire 4. As the fixing portion 6, as shown in FIG. 4, a method of adhering a button 61 made of resin to the side surface of the tooth with an adhesive to make it a protruding state, or as shown in FIG. 5, one. A method of attaching a band 62 attached so as to orbit the teeth of a book and forming a protrusion 63 on the band 62 can be used. Then, by locking the bent portion 42 of the wire 4 to the fixed portion 6, the wire 4 is prevented from moving to the back.

On the other hand, the peripheral portion 43 (see FIGS. 1 and 2) provided at the back of the wire 4 can adjust the widths of the outer wire 4 and the inner wire 4 by deforming the portion. There is.

When deforming the peripheral portion 43, the removable orthodontic appliance 1 is once removed, and both sides (inner portion and outer portion of the tooth) of the peripheral portion 43 exposed from the resin are narrowed or expanded by a special tool. Adjust the width by doing. Then, by changing the gap width between the outer resin block 2 and the inner resin block 3, an appropriate orthodontic force is applied in a state of being in closer contact with the teeth.

On the other hand, the pressing portion 5 presses the left and right inner resin blocks 3 from the inside to the outside, and here, in the first embodiment, it is composed of the wire 51. The pressing portion 5 is provided so as to pass the wire 51 through the facing inner resin block 3 and circulate from there through the inside of the front teeth and the lower surface of the tongue. Then, the elastic force of the wire 51 presses each inner resin block 3 toward the outside.

Further, the pressing portion 5 can be configured as shown in FIG. The pressing portion 5 divides the resin block 52 provided on the lower surface of the tongue or the like into left and right so that the gap width of the resin blocks 52 can be adjusted, and the width adjusting mechanism is within the range of the thickness of the resin. 53 is provided. The width adjusting mechanism 53 includes front and rear slide pins 54 that regulate the slide direction, left and right screw screws 55 provided between the plurality of slide pins 54, and the like, and is between the left and right screw screws 55. By rotating the operation screw 56 attached to the above, the gap width of the resin block 52 can be changed along the slide direction. When this resin block 52 is provided, it may be provided integrally with the inner resin block 3, or it may be configured separately from the inner resin block 3 so that a pressing force can be applied by a wire or the like.

Next, a case where the removable orthodontic appliance 1 configured as described above is attached to the dentition to be corrected will be described.

First, when the removable orthodontic appliance 1 is attached, the outer resin block 2 and the inner resin block 3 are positioned according to the dentition to be corrected, and in that state, the bending protruding forward from the outer resin block 2. A fixing portion 6 is formed so as to engage with the portion 42. When forming this fixing portion 6, if the button 61 can be adhered to the side surface of the tooth, the button 61 is adhered using an adhesive, while the button 61 may not be adhered depending on the state of the dentition. Therefore, in such a case, a band 62 that orbits one tooth is attached as shown in FIG. 5, and a protruding portion 63 provided on the band 62 is provided on the side surface of the tooth.

Next, in order to adjust the left and right pressing force when mounting on the dentition, the pressing force in the left and right direction of the pressing portion 5 is adjusted while observing the state of the teeth. At this time, when the pressing portion 5 is composed of the wire 4, the pressing force in the left-right direction is adjusted by deforming the wire 4, and the width adjusting mechanism 53 as shown in FIG. 3 is provided. If so, the pressing force in the left-right direction is adjusted by adjusting the gap width of the resin block using a screw screw 55 or the like.

Then, with the pressing force adjusted in this way, the removable orthodontic appliance 1 is pushed in at once from above the teeth.

Then, the bent portion 42 provided at the tip portion 41b of the wire 4 overcomes the fixing portion 6 by elasticity, and returns so as to come into contact with the tooth surface at the position where the bending portion 42 has been overcome.

When the removable straightening device 1 is attached in this way, the left and right wires 4 try to move to the back due to the pressing force of the pressing portion 5, but at this time, the bent portion 42 of the tip portion 41b of the wire 4 is fixed. Since it is locked by 6 and the tip portion 41b of the bent portion 42 is located between the teeth, it is possible to restrict the movement of the orthodontic appliance to the back. Then, by restricting the movement to the back in this way, the pressing force in the left-right direction by the pressing portion 5 is applied to the dentition to correct the teeth.

As described above, according to the above embodiment, the outer resin block 2 provided on the outer side of the tooth, the inner resin block 3 provided on the inner side of the tooth, and the outer resin block 2 pass through and orbit the inner part of the tooth. The wire 4 is provided with a wire 4 passing through the inner resin block 3 and a pressing portion 5 for applying a pressing force from the inside to the outside to the inner resin block 3 provided at the left and right opposite positions in the oral cavity. In the removable orthodontic appliance 1, a bent portion 42 having a wire 4 protruding from the outer resin block 2 or the inner resin block 3 to the labial side is provided, and the bent portion 42 is formed by using the fixing portion 6 fixed to the teeth. Since the wire 4 is detachably engaged to restrict the movement of the wire 4 to the back, the tooth can be corrected without covering the occlusal surface of the tooth.

Further, when the fixing portion 6 is composed of a button 61 fixed to the surface of the tooth with an adhesive, the movement of the wire 4 can be restricted only by fixing the small button 61 to the side surface of the tooth. Become.

On the other hand, when the fixing portion 6 is composed of a band 62 fitted so as to go around one tooth, for example, even if the button 61 cannot be attached due to the state of tooth alignment, the band 62 protrudes. By locking the wire 4 and the outer resin block 2 to the portion 63, it becomes possible to restrict the movement to the back.

Further, since the tip portion 41b of the bending portion 42 is positioned between the adjacent teeth, the movement to the back is restricted by bending the tip portion 41b in the gap direction or the like. Will be able to.

The present invention is not limited to the above embodiment, and can be carried out in various embodiments.

For example, in the above embodiment, the case where the patient is attached to the lower jaw has been described as an example, but similarly, the case where the patient is attached to the upper jaw may be treated with the same configuration.

Further, in the above embodiment, the fixing portion 6 is provided at the bent portion 42 of the left and right outer resin blocks 2, but the wire 4 is projected from the inner resin block 3 to form the bent portion 42, and similarly. The fixing portion 6 may be locked to the bent portion 42.

Further, in the above embodiment, the bent portion 42 is locked by the fixing portion 6, but when the wire 4, the outer resin block 2, the inner resin block 3, or the like floats, in order to prevent this floating. If appropriate, a similar fixing portion may be provided on the side surface of the other tooth to lock the tooth.

1 ... Removable straightening device 2 ... Outer resin block 3 ... Inner resin block 4 ... Wires 41a, b ... Tip 42 ... Bending part 43 ... Circumferential part 5 ...・ ・ Pressing part 51 ・ ・ ・ Wire 52 ・ ・ ・ Resin block 53 ・ ・ ・ Gap adjustment mechanism 54 ・ ・ ・ Slide pin 55 ・ ・ ・ Screw screw 56 ・ ・ ・ Operation screw 6 ・ ・ ・ Fixed part 61 ・ ・ ・Button 62 ... Band 63 ... Projection

Claims (4)

The outer resin block provided on the outside of the tooth and
The inner resin block provided inside the tooth and
Through the outer resin block, and orbiting the deeper tooth wire has to pass through the inner resin block,
The inner resin block provided at the opposite position in the oral cavity is provided with a pressing portion for applying pressing force from the inside to the outside.
A bent portion is provided so that the wire protrudes from the outer resin block or the inner resin block to the labial side.
A removable orthodontic appliance characterized in that the bent portion is detachably engaged with a fixed portion fixed to a tooth to restrict the movement of the wire to the back. The removable orthodontic appliance according to claim 1, wherein the fixed portion is composed of a button fixed to the surface of the tooth with an adhesive. The removable orthodontic appliance according to claim 1, wherein the fixed portion is composed of a band fitted so as to orbit one tooth. The removable orthodontic appliance according to claim 1, wherein the tip end side of the bent portion is provided between adjacent teeth.

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