TW202216089A - Orthodontic appliance - Google Patents

Abstract

An orthodontic appliance (10) equipped with an expansion means and configured to be easily detachable, the orthodontic appliance comprising: a pair of right and left floor parts (11, 11) which are latched onto the inner side of a dentition (4); and expansion means (15, 16) which are disposed between the pair of right and left floor parts (11, 11) and which are for expanding the space between said floor parts (11, 11), wherein an insertion part (20) is provided to an abutment surface (11a) side of the floor parts (11, 11), and the orthodontic appliance is configured to be detachable by inserting a detachment jig (50) in the insertion part (20) and applying an external force thereto.

Description

Orthodontic device

The present invention relates to an orthodontic device for orthodontic correction.

Conventionally, as a device for aligning the dentition, a slow expansion orthodontic device is known. The slow expansion correction device includes, for example, a device of the expansion base type. This expanded base type device includes left and right base parts, a fixing part for fixing the left and right base parts to the upper jaw dentition part or the lower jaw dentition part, and an expansion screw embedded in the center of the left and right base parts. In such an expanded base type device, by rotating the expansion screw, the base portion is slid left and right, and an expanding force is applied to the lateral upper jaw dentition portion or the lower jaw dentition portion (for example, refer to Patent Document 1). [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4332641

[Problems to be Solved by Invention]

However, the conventional orthodontic device described in the above-mentioned Patent Document 1 is fixed so as to be in close contact with the upper jaw or the lower jaw, and as a result, when it is to be removed, there is a problem that it cannot be easily removed.

The present invention has been developed in view of such a problem, and an object thereof is to provide an orthodontic device which can be easily removed from an orthodontic device provided with an expansion means. [Technical means to solve problems]

In order to achieve the above object, the invention recited in claim 1 relates to an orthodontic device comprising: a pair of left and right bases locked on the inner side of the dentition, and a pair of bases provided on the pair of left and right. The expansion means for expanding the space between the pair of left and right base parts toward the outside is provided with an insertion part on the abutting surface side of the base part, and the removal jig is inserted into the insertion part and an external force is applied to enable the Orthodontics removed.

In the invention described in claim 2, in the structure described in claim 1, the dentition portion is an upper jaw dentition portion, and the surface on the upper jaw dentition portion side among the surfaces on the flap side of the base portion The aforementioned insertion portion is provided on the rear end side.

The invention recited in claim 3 is based on the structure recited in claim 1, wherein the dentition portion is an upper jaw dentition portion, and the insertion portion is provided on the front end side of the surface of the base portion on the flap side.

In the invention described in claim 4, in the structure described in claim 1, the dentition portion is a mandibular dentition portion, and the dentition portion is on the mandibular dentition portion side of the surface of the base portion on the bottom of the mouth. The aforementioned insertion portion is provided on the rear end side of the surface.

The invention described in claim 5 is based on the structure described in any one of claims 1 to 4, wherein a peripheral edge portion of the base portion is provided with a convex-shaped engaging portion provided on the dentition portion. A concave engaged portion that engages and disengages.

In the invention described in claim 6, in the structure described in any one of claims 1 to 5, the insertion portion is formed in a concave shape on the abutting surface side.

In the invention described in claim 7, in the structure described in claim 6, the insertion portion is formed in a shape tapered from the end side toward the rear end. [Effect of invention]

According to the invention described in claim 1, in the orthodontic device provided with the enlargement means, a predetermined insertion portion is provided on the abutting surface side of the base portion, and the removal jig is inserted into the abutting insertion portion and inserted into the orthodontic device. The orthodontic device can be removed by applying an external force, so the removal of the orthodontic device can be easily performed with a simple structure.

Furthermore, according to the invention described in claim 2, in the orthodontic device for the upper jaw dentition, specifically, the insertion portion is provided on the rear end side of the surface on the upper jaw dentition side of the surface on the flap side of the base portion. , so that the removal of the orthodontic device for the upper jaw can be easily and reliably performed.

Furthermore, according to the invention described in claim 3, in the orthodontic device for the upper jaw dentition portion, specifically, the insertion portion is provided on the front end side of the surface of the base portion on the flap side, whereby the upper jaw can be easily and surely performed. Removal of the orthodontic device used.

Furthermore, according to the invention described in claim 4, in the orthodontic device for the mandibular dentition portion, specifically, the insertion portion is provided on the rear end side of the surface on the mandibular dentition portion side in the surface on the flap side of the base portion. , so that the removal of the orthodontic device for the lower jaw can be easily and reliably performed.

In addition, according to the invention described in claim 5, since the engaged portion of the concave shape that engages and disengages from the engaging portion of the convex shape provided in the tooth row portion is provided, it is not necessary to use a so-called bridge or the like. It is possible to fix the orthodontic device with expansion means. Furthermore, in the case of fixing without using a bridge, the orthodontic device can be more easily attached to the upper and lower jaws, and even in this case, the orthodontic device can be easily and surely removed.

Furthermore, according to the invention described in claim 6, since the insertion portion is formed in a concave shape on the abutting surface side, the insertion portion can be formed in a state in which there is no unevenness on the outer surface side of the orthodontic device.

Furthermore, according to the invention described in claim 7, since the insertion portion is formed into a shape tapered from the end portion toward the rear end, the removal jig can be easily locked.

Hereinafter, embodiments of the present invention will be described. Furthermore, in the example described in the following embodiments, an enlarged base as an orthodontic device is installed in the upper jaw dentition portion or the lower jaw dentition portion in the oral cavity.

In each of the following embodiments, in a state where the orthodontic device is installed on the upper or lower dentition portion, the anterior dentition side is the front side, the posterior dentition side is the rear side, and the lingual side is the inner side. , the buccal side is described as the outer side. Here, the front tooth system includes left and right middle incisors belonging to the incisors, left and right lateral incisors, and left and right canines. The posterior dentition consists of the first and second small molars on the left and right of the molars, and the first to third molars on the left and right. Also, the illustration of the third molar is omitted. [The first embodiment of the invention] 1 to 6 show a first embodiment of the present invention.

FIG. 1 is a bottom view showing a state in which the orthodontic device according to the first embodiment of the present invention is attached to the upper jaw dentition. FIG. 2 is an enlarged view showing part A of FIG. 1 . FIG. 3 is a cross-sectional view taken along line I-I of FIG. 1 . Fig. 4 is an enlarged bottom view showing the insertion part and the jig for removal according to the first embodiment. Fig. 5 is an enlarged front view showing the insertion portion of the first embodiment. FIG. 6 is a cross-sectional view along II-II of FIG. 5 .

As shown in FIG. 1 , an expansion base 10 as an orthodontic device includes a pair of left and right base parts 11 , 11 , an expansion screw 15 as an expansion means, and a guide part provided between the base parts 11 , 11 . 16. The pair of left and right base portions 11 and 11 are each made of a resin sheet such as acrylic resin, and have predetermined flexibility. The pair of left and right bases 11 and 11 are shaped to fit inside the oral cavity 1 .

As shown in FIGS. 2 and 3 , the respective outer edge sides of the pair of left and right base portions 11 and 11 are formed along the inner sides of the left and right rear teeth 4 in order to be locked inside the left and right rear teeth 4 . Specifically, the outer edge sides of the pair of left and right base portions 11 and 11 are formed along the inner sides of the tooth neck portions of the left and right rear teeth 4 .

The shape of the inner sides of the left and right rear teeth 4 can be detected by optical scanning, and according to the scanned data, cutting means such as a saw, a laser cutter, etc. are used for cutting, thereby forming a pair of left and right substrates Parts 11, 11 on the outer edge side.

The expansion screw 15 is made of metal and is provided between the pair of left and right base parts 11 , 11 . For example, by rotating the expansion screw 15 using a dedicated rotation tool, a force to expand the position of the left and right rear teeth 4 is imparted through the left and right base parts 11 and 11 . Guide portions 16 are provided on both sides of the enlarged screw 15, respectively. When the expansion screw 15 is rotated, the guide portions 16 can guide the left and right base portions 11 to expand while maintaining the same plane.

As shown in FIG. 3 , the pair of left and right bases 11 are formed of resin sheets 12 that are press-molded to fit the shape in the oral cavity 1 . Further, on the resin sheet 12, a reinforcing resin sheet may be provided as a reinforcing resin having a predetermined strength. In the case of providing the reinforcing resin sheet, press molding is performed while being fixed to the resin sheet 12 with an adhesive. As the adhesive, for example, epoxy-based, acrylic resin-based, urethane-based, cyanoacrylate-based, or polyurethane-based adhesives can be used.

Also in the present embodiment, as shown in FIGS. 1 to 3 , on the inner side of the tooth neck portion, that is, the lingual side, of the posterior teeth 4 , which are part of the left and right dentition portions, are adhered with an adhesive and provided respectively formed as The protruding portion 5 as the engaging portion has a convex shape. The protrusions 5 are formed of plastic with a length of at least 1 mm. Each protruding portion 5 is formed in a conical shape so as to protrude toward the tongue side. In the present embodiment, specifically, the protrusions 5 are provided on the lingual sides of the fourth and sixth teeth on the left and right, but the present invention is not limited to this, and the protrusions 5 may be provided on other teeth.

In addition, although the protruding portion 5 of the present embodiment is formed in a conical shape, it is not limited to this shape, and may be formed in, for example, a pyramid shape, a truncated cone shape, a truncated pyramid shape, or a cylindrical shape, and the flat side is adhered to the rear teeth 4. The inner side of the left and right may be in a semi-cylindrical shape, a hemispherical shape, or the like, as long as the left and right base portions 11 can be locked.

On the other hand, a pair of left and right base portions 11 and 11 of the enlarged base 10 are provided on the outer edge portions of the left and right base portions 11 , 11 , and the left and right pair of the left and right protruding portions 5 are respectively fitted to engage or disengage. The fitting concave portion 17 as a to-be-engaged portion. Specifically, since the protrusions 5 on the left and right have a conical shape, the fitting recess 17 is also formed in a shape into which the conical is fitted.

Here, in this embodiment, if the expansion screw 15 and the guide portion 16 are not made of metal but are made of hard plastic, since all the members are made of plastic, it becomes possible to install even a user who is allergic to metal.

According to the present embodiment as described above, the protrusions 5 are provided on the inner sides of the left and right rear teeth 4, respectively, and the left and right fitting concave portions 17 to be locked with the protrusions 5 are provided on the left and right base portions 11, respectively. By the outer edge portion, the pair of left and right base portions 11 can be securely and easily fixed to the inner side of the left and right rear teeth 4 .

Furthermore, in the present embodiment, although the protruding portion 5 is configured to be fitted and locked to the fitting recessed portion 17 , it is not limited to this, and any structure may be used as long as it can be fitted and locked to each other.

In the present embodiment, although the example in which the protrusions 5 are directly fixed to the inner sides of the left and right rear teeth 4 has been described, the present invention is not limited to this, and the protrusions are fixed to the inner sides of the mouthpiece corresponding to the rear teeth 4. 5 is also possible.

In addition, in the present embodiment, the example in which the protruding portion 5 is fixed to the inner side of every other one of the left and right rear teeth 4 has been described, but the present invention is not limited to this, and all the left and right rear teeth 4 are fixed to the inner side. The protrusion 5 may also be used. Furthermore, it is sufficient that the pair of left and right base portions 11 can be locked, and the protruding portion 5 can be fixed to at least one rear tooth 4 of each of the left and right rear teeth 4 .

Also in this embodiment, as shown in FIGS. 4 to 6 , the base portion 11 is on the side of the contact surface 11a with respect to the dentition portion (here, it is the surface on the side of the upper jaw dentition portion among the surfaces on the flap side). ) on the rear end side, an insertion portion 20 formed in a predetermined size and shape is provided. The insertion portion 20 is formed in a concave shape on the contact surface 11a side. Here, the insertion portion 20 is formed in a shape that tapers from the end side 21 (rear end side here) toward the back side 22 (front side here) (the shape that becomes narrower toward the back side).

Then, by inserting the removal jig 50 into the insertion portion 20 and applying an external force, the enlarged base 10 can be removed from the upper jaw dentition portion. The removal jig 50 has an elongated main body portion 51 and a hook-shaped hook portion 52 provided at the front end portion thereof. The front end portion of the hook portion 52 is formed to fit the tapered shape of the front end of the insertion portion 20 . The front end is tapered in shape.

Next, the action of the enlargement base 10 as the orthodontic device of the present embodiment will be described.

In order to install the enlarged base 10 between the left and right rear teeth 4, the left and right base parts 11 are inserted into the outer edge sides of the left and right rear teeth 4 at the inner side of the tooth neck, and thereby fixed to the left and right rear teeth 4. between the teeth 4. Thereby, the left and right rear teeth 4 can be expanded in a short period of time in the lateral direction.

According to the enlargement base 10 of the present embodiment as described above, the pair of left and right bases 11 includes a resin sheet 12 press-molded to fit the shape in the oral cavity 1, and the resin sheet 12 is provided in a predetermined manner. Since the resin part 13 for reinforcement of intensity|strength can obtain predetermined intensity|strength, it is easy to manufacture.

Furthermore, according to the enlarged base 10 of the present embodiment, the reinforcing resin portion 13 is adhered to the resin sheet 12 so as to have a predetermined strength, so that it is easier to manufacture. Further, according to the enlarged base 10 of the present embodiment, the reinforcing resin portion 13 is a reinforcing resin sheet, and the reinforcing resin sheet is adhered to the resin sheet 12 with an adhesive to have a predetermined strength, so it is easier to make.

Furthermore, according to the expansion base 10 of the present embodiment, the expansion screw 15 and the guide portion 16 are fixed when the reinforcing resin is adhered to the resin sheet 12, so that the expansion screw 15 and the guide portion 16 can be easily attached to the resin sheet 12. . Furthermore, according to the expansion base 10 of the present embodiment, the expansion screw 15 and the guide portion 16 are sandwiched and fixed when the resin sheet 13 for reinforcement is adhered to the resin sheet 12 with an adhesive, so that they can be fixed on the resin sheet 12. The expansion screw 15 and the guide portion 16 can be easily attached.

In addition, according to the enlarged base 10 of the present embodiment, the pair of left and right base parts 11 are arranged inside the left and right rear teeth 4, and the left and right base parts 11 are arranged to be locked inside the left and right rear teeth 4. The outer edge portion 11 is formed in a shape along the inner side of the left and right rear teeth 4, so that the pair of left and right base parts 11 can be easily fixed on the inner side of the tooth neck portion of the left and right rear teeth 4. In this case, since the inner side of the tooth neck portion of the left and right rear teeth 4 is gradually inclined toward the center of the tooth root portion, the left and right pair of base portions 11 can be securely fixed, and it can be prevented from being easily detached from the tooth after being fixed. Not yet.

When the expansion base 10 is removed, the hooking part 52 of the removal jig 50 is inserted into the insertion part 20 from the back, and the main body part 51 is grasped and pulled forward (external force is applied), thereby removing the dentition and the dentition. The flap will remove the enlarged base 10 .

As described above, according to the enlargement base 10 of the present embodiment, in the enlargement base 10 including the enlargement screw 15 and the guide portion 16, the predetermined insertion portion 20 is provided on the abutting surface 11a side of the base portions 11 and 11, and the insertion portion The expansion base 10 can be removed by inserting the removal jig 50 and applying an external force, so that the expansion base 10 can be easily removed with a simple structure.

Furthermore, according to the enlarged base 10 of the present embodiment, in the enlarged base 10 for the upper jaw dentition, specifically, the rear end side of the surface 11a on the upper jaw dentition side among the surfaces of the bases 11 and 11 on the flap side. The insertion portion 20 is provided, whereby the enlarged base 10 for the upper jaw can be easily and surely removed.

Further, according to the enlarged base 10 of the present embodiment, a concave engaged portion, that is, a fitting recess, is provided with a convex engaging portion provided in the tooth row portion 4, that is, a concave engaging portion that engages and disengages the protruding portion 5. 17. The enlarging base 10 with enlarging means can be fixed without using a so-called bridge or the like. In the case of fixing without using a bridge, the enlarged base 10 is more easily adhered to the upper jaw and the lower jaw, and even in this case, the enlarged base 10 can be easily and surely removed.

Further, according to the enlarged base 10 of the present embodiment, since the insertion portion 20 is formed in a concave shape on the abutting surface 11a side, the insertion portion 20 can be formed without unevenness or the like on the outer surface of the enlarged base 10 . Therefore, it has both an excellent installation feeling and a beautiful appearance.

Furthermore, according to the enlarged base 10 of the present embodiment, since the insertion portion 20 is formed into a shape tapered from the end portion 21 toward the front end of the rear side 22, the removal jig 50 can be easily locked. The removal jig 50 is also formed into a tapered shape according to the tapered shape of the front end of the insertion portion 20 , so that the insertion into the insertion portion 20 can be smoothly performed, and the expansion base 10 can be easily and surely removed. [Second Embodiment of Invention] Next, the second embodiment of the present invention will be described with reference to FIGS. 7 and 8 . In addition, since this embodiment is the same as the above-mentioned first embodiment except for the matters described below, the explanation of the matters other than those of the above-mentioned first embodiment is omitted.

FIG. 7 is a perspective view showing a state in which the orthodontic device according to the second embodiment of the present invention is removed from the state of being installed in the upper jaw dentition with a jig. Fig. 8 is an enlarged bottom view showing an insertion portion and a jig for removal according to the second embodiment.

The enlarged base 110 serving as the orthodontic device of the present embodiment is the same as the above-mentioned first embodiment, and is installed on the enlarged base 110 of the upper jaw dentition.

As shown in FIGS. 7 and 8 , in the present embodiment, an insertion portion 120 having a predetermined size and shape is provided on the front end side of the base portion 111 on the abutting surface 111a side of the dentition portion. The insertion portion 120 is formed in a concave shape on the contact surface 111a side. Here, the insertion portion 120 is formed to be tapered from the front end side 121 (here, the front end side) toward the back side 122 (here, the rear side) (the shape that narrows toward the back side).

Then, by inserting the removal jig 150 through the insertion portion 120 and applying an external force, the enlarged base 110 can be removed from the upper jaw dentition portion. The removal jig 150 may have a hook portion 152 formed in a tapered shape (in the shape of a spatula) at the front end portion of the elongated main body portion 151 . Furthermore, the removal jig 150 may be configured to include a hook portion 152 at one front end portion and a hook-shaped hook portion of the removal jig 50 according to the first embodiment described above at the other front end portion. 52. If both hooking parts are provided in one jig, it is possible to support the removal of both the front side and the rear side.

According to the enlargement base 110 of the present embodiment, in the enlargement base 110 for the upper jaw dentition part, specifically, the insertion part 120 is provided on the front end side of the surface 111a of the base part 111 on the flap side, so that the insertion part 120 can be easily and surely provided. The removal of the enlarged base 110 for the upper jaw is performed. [The third embodiment of the invention] Next, a third embodiment of the present invention will be described. In addition, since this embodiment is the same as the above-mentioned first embodiment except for the matters described below, the explanation of the matters other than those of the above-mentioned first embodiment is omitted.

The enlarged base of the present embodiment is different from the aforementioned first embodiment in that it is an enlarged base installed in the lower jaw dentition.

In this embodiment, similarly to the aforementioned first embodiment, an insertion portion (not shown) having a predetermined size and shape is provided on the rear end side of the base portion on the abutting surface side with respect to the dentition portion. The insertion portion is formed in a concave shape on the contact surface side. Here, the insertion portion is formed in a shape that tapers from the end side (here, the rear end side) toward the back side (here, the front side) (the shape that becomes narrower toward the back side).

And by inserting the jig for removal in this insertion part, and applying external force, the expansion base can be removed from the upper jaw dentition part. This removal jig can be the same as that of the first embodiment described above.

According to the enlargement base of the present embodiment, in the enlargement base for the mandibular dentition portion, specifically, the insertion portion is provided on the rear end side of the surface of the base portion on the flap side, whereby the enlargement base for the mandible can be easily and surely performed. of removal. [Other Embodiments of the Invention] Although the embodiments of the present invention have been described, these embodiments are given as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, changes, and combinations can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the invention described in the scope of claims and their equivalents, as in the scope and gist of the invention.

For example, in each of the above-described embodiments, the material and shape of the enlargement base 10 may be formed of appropriate materials as long as they can be inserted into the oral cavity and have the same function.

Further, in the above-described embodiments, an example has been described in which the enlargement base 10 of the orthodontic device is not provided with a wire (wier) as a locking means, but it is not limited to this, and it can also be applied to a device with a wire. etc. device.

In the above-described embodiments, the case where the expansion base 10 is directly attached to the dentition portion is mainly described, and the expansion base 10 is removed from the dentition portion, but the present invention is not limited to this. The present invention can also be applied to, for example, a case where the enlargement base 10 is removed from the mouthpiece when the enlargement base 10 is further installed after a dental mouthpiece such as an aligner is installed.

1: Oral 4: Rear teeth (dentition part) 5: Protruding part (engaging part) 10,110: Enlarging the base (orthodontic device) 11,111: base 11a, 111a: abutting surfaces 12: Resin sheet 15: Expanding screws (expanding means) 16: Guidance Department (Expansion Means) 17: Fitting concave part (locked part) 20,120: Insert 21: end side 22: Inside 50,150: Fixtures for demolition 51,151: Main body 52,152: Hook part

1 is a bottom view showing a state in which the orthodontic device according to the first embodiment of the present invention is installed in the upper jaw dentition. [ Fig. 2 ] is an enlarged view showing part A of Fig. 1 . [FIG. 3] It is a sectional view taken along line I-I of FIG. 1. [FIG. Fig. 4 is an enlarged bottom view showing the insertion part and the jig for removal according to the first embodiment. [ Fig. 5] Fig. 5 is an enlarged front view showing the insertion portion of the first embodiment. [FIG. 6] It is a sectional view taken along II-II of FIG. 5. [FIG. [ Fig. 7] Fig. 7 is an explanatory view showing a state when the orthodontic device according to the second embodiment of the present invention is removed from the jig that is installed in the upper jaw dentition. Fig. 8 is an enlarged bottom view showing the insertion part and the jig for removal according to the second embodiment.

4: Rear teeth (dentition part)

11: base

11a: abutting surface

20: Insertion part

21: end side

22: Inside

50: Demolition jig

51: main body

52: Hook part

Claims (7)

An orthodontic device comprising: a pair of left and right bases locked on the inner side of the dentition, and The expansion means is provided between the pair of left and right base parts and expands the space between the left and right pair of base parts toward the outside, An insertion portion is provided on the abutting surface side of the base portion, The orthodontic device can be removed by inserting a removal jig into the insertion portion and applying an external force. The orthodontic device according to claim 1, wherein, The aforementioned dentition is the upper jaw dentition, The insertion portion is provided on the rear end side of the surface on the side of the upper jaw dentition portion among the surfaces of the base portion on the flap side. The orthodontic device according to claim 1, wherein, The aforementioned dentition is the upper jaw dentition, The insertion portion is provided on the front end side of the surface of the base portion on the flap side. The orthodontic device according to claim 1, wherein, The aforementioned dentition is the lower jaw dentition, The insertion part is provided on the rear end side of the surface on the side of the lower jaw dentition part among the surfaces of the base part on the side of the bottom of the mouth. The orthodontic device according to any one of claims 1 to 4, wherein, A concave-shaped engaged portion that engages and disengages with an engaging portion formed in a convex shape provided on the dentition portion is provided on the peripheral edge portion of the base portion. The orthodontic device according to any one of claims 1 to 5, wherein, The said insertion part is formed in the concave shape on the contact surface side. The orthodontic device as claimed in claim 6, wherein, The said insertion part is formed in the shape which tapers from the end side toward the back side front-end|tip.

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