JP2013146442A - Orthodontic appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an orthodontic appliance capable of more effectively improving occlusion of a patient.SOLUTION: An upper resin plate 6 to be mounted on an inner surface of an upper jaw 1 and a lower resin plate 7 to be mounted on an inner surface of a lower jaw 2 are connected so as to open and close a front side of both resin plates 6 and 7 by a connection member 8 which has a spring property and a roughly U shape in a side view. An upper arched wire 9 to be abutted along an outer surface of an upper dental arch 3 is attached to the upper resin plate 6, and a lower arched wire 10 to be abutted along an outer surface of a lower dental arch 4 is attached to the lower resin plate 7. At least a pair of right and left connection members 8 are provided, and each connection member 8 includes: a plurality of wire bodies 18, each of which has the spring property and the roughly U shape in the side view; and a resin-made outer skin tube 19 covered with and fitted to the wire bodies 18.

Description

  The present invention relates to an orthodontic apparatus, and corrects dysfunctional conditions such as dentition disturbances and occlusal defects not only in children but also in adults so as to provide stable dentition and good occlusion. It is related with the correction apparatus for doing.

  Known literatures such as patent gazettes cannot be specifically cited as conventional orthodontic devices. However, as a conventionally known orthodontic device, a resin plate attached to the inner surface of the upper jaw is along the upper dental arch. It is known that a wire for fixing the resin plate to the upper jaw is attached, and the wire is extended and attached along the lower dental arch. Further, the resin plate is divided into left and right parts, and the distance between the divided end faces can be adjusted by changing the wire by using a tool.

  The conventional orthodontic apparatus configured as described above can expand the upper and lower dental arches laterally by deforming the wire and widening the interval between the divided end faces of the resin plate. As a result, the upper and lower dentitions are arranged, and occlusion can be improved.

  However, as described above, the conventional orthodontic apparatus is provided with only the resin plate that is attached to the inner surface of the upper jaw, and is not provided with the resin plate that is attached to the inner surface of the lower jaw. Therefore, in order to improve the patient's occlusion more effectively, it is conceivable to provide a resin plate to be attached to the inner surface of the lower jaw. However, if such a resin plate is provided above and below, there is a problem that a load is applied to the wire too much, resulting in metal fatigue, which easily breaks during use. Therefore, it has been impossible to provide the resin plates above and below with a conventional correction device.

  On the other hand, in order to improve the patient's occlusion more effectively, it is conceivable to move the resin plate freely according to the movement in the oral cavity of the patient. However, since the conventional orthodontic apparatus makes the wire along the upper and lower dental arches with one wire, the movement of the resin plate in the patient's oral cavity is limited, and the resin plate is used as the patient's oral cavity. There was a problem that it could not move freely according to the movement inside.

  Then, in view of said situation, this invention aims at providing the correction apparatus which can improve a patient's biting more effectively.

Means for solving the above problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 is that the upper resin plate 6 mounted on the inner surface of the upper jaw 1 and the inner surface of the lower jaw 2. The lower resin plate 7 attached to the upper and lower resin plates 6 and 7 is connected to a lower resin plate 7 by a spring-like connecting member 8 having a substantially U shape in side view so that the front sides of both resin plates 6 and 7 are opened and closed. An upper arch wire 9 applied along the outer surface of the dental arch 3 is attached, and a lower arch wire 10 applied along the outer surface of the lower dental arch 4 is attached to the lower resin plate 7.
The connecting members 8 are provided in at least a pair of left and right, and each connecting member 8 includes a plurality of substantially linear U-shaped wire bodies 18 having a spring property, and a resin-made outer tube tube 19 fitted to the wire bodies 18. It is characterized by the following.

  According to a second aspect of the present invention, in the straightening device according to the first aspect, the upper and lower resin plates 6 and 7 are divided into two parts in the right and left directions, and are integrally formed by an expansion / contraction coupler 11 capable of adjusting expansion / contraction between the divided end faces. The upper and lower arcuate wires 9 and 10 are divided into left and right parts, and the divided end parts are connected in a telescopic manner in a telescopic manner.

  The effect of the invention by the above solution will be described with reference numerals in the embodiments described later. According to the correction device of the invention according to claim 1, the upper resin plate 6 and the lower resin plate 7 are made of a spring. Since the front side of both the resin plates 6 and 7 is connected by a connecting member 8 having a substantially U shape in side view, the correction device is slightly closed on the front side and the patient is seen from the rear side. The upper and lower resin plates 6 and 7 are brought into close contact with the inner surfaces of the upper jaw 1 and the lower jaw 2, respectively, and the upper and lower arch wires 9 and 10 are connected to the upper and lower dental arches 3 and 4, respectively. Can be attached to the upper and lower jaws 1 and 2 easily and easily.

  Further, according to the present invention, at least a pair of left and right connecting members 8 for connecting the upper resin plate 6 and the lower resin plate 7 are provided, and each connecting member 8 has a plurality of substantially U-shaped side views having spring properties. It consists of a linear body 18 and a resin-made outer tube 19 fitted into the linear body 18. Therefore, the stress applied to the linear body 18 is dispersed by the plurality of substantially U-shaped linear bodies 18 in a side view, and furthermore, since these linear bodies 18 are fitted by the outer tube 19, The load is reduced. Thereby, even if the upper resin plate 6 and the lower resin plate 7 are provided vertically, the connecting member 8 is not easily broken during use.

  Furthermore, according to the present invention, at least a pair of left and right connecting members 8 for connecting the upper resin plate 6 and the lower resin plate 7 are provided, and each connecting member 8 has a plurality of substantially U-shaped side views having spring properties. Since it consists of the wire body 18 and the resin-made outer tube | pipe tube 19 fitted by these wire bodies 18, the upper arch-shaped wire 9 and the lower arch-shaped wire 10 are formed with the member independent, and also spring property have. Therefore, by connecting the upper resin plate 6 and the lower resin plate 7 with such a connecting member 8, the upper resin plate 6 and the lower resin plate 7 can be freely moved in accordance with the movement in the oral cavity of the patient. Can do. Further, even if the upper resin plate 6 and the lower resin plate 7 are freely moved in accordance with the movement in the oral cavity of the patient in this way, as described above, by the plurality of U-shaped linear bodies 18 in side view, as described above. The stress applied to the wire 18 is dispersed, and furthermore, since the wire 18 is fitted with the outer tube 19, the load on the wire 18 is reduced, so that the connecting member 8 is in use. There is no such thing as breaking easily.

  Therefore, according to the present invention, it is possible to more effectively improve the patient's bite.

  According to the second aspect of the present invention, the upper and lower resin plates 6 and 7 are divided into two parts on the right and left sides, and are integrally connected by the expansion / contraction coupling tool 11 capable of adjusting the expansion / contraction between the divided end faces. Each of the upper and lower arcuate wires 9 and 10 is divided into left and right parts, and the divided end parts are connected so as to be telescopically extendable. Therefore, when the upper dental arch 3 and the lower dental arch 4 are expanded laterally to perform the treatment of adjusting the upper and lower dental arches, the expansion / contraction coupler 11 is expanded to separate the divided plate 6a of the upper resin plate 6. , 6a are moved away from each other, the split end portions 9a, 9a of the upper arcuate wire 9 move away from each other and the upper arcuate wire 9 is stretched. Therefore, the upper arcuate wire 9 is deformed. The upper dental arch 3 is not compressed and can be moved to a target position to be treated in a balanced manner. Further, when the divided plates 7a and 7a of the lower resin plate 7 are moved away from each other by the expansion operation of the expansion / contraction coupler 11, the divided end portions 10a and 10a of the lower arcuate wire 10 are moved away from each other. Since the lower arch wire 10 is stretched, the lower arch wire 10 can move to the target position to be treated in a balanced manner without pressing the lower dental arch 4 like the upper arch wire 9. it can. Therefore, according to the present invention, it is possible to easily and easily move the upper and lower arched wires 9 and 10 to a target position for treatment in a balanced manner simply by operating the expansion / contraction coupler 11.

It is the front view which looked at the use condition of the correction apparatus which concerns on this invention from the front of the mouth of a child patient. (a) is the perspective view which looked at the correction apparatus same as the above from diagonally forward, (b) is the side view of the correction apparatus. It is a top view which shows the state which attached the orthodontic apparatus same as the above to the upper jaw and the lower jaw simultaneously in the expanded state. It is a side view which shows the connection member of a substantially U shape in a side view. It is a partially expanded plan view of the correction apparatus same as the above.

  A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numerals 1 and 2 denote an upper jaw and a lower jaw of a child patient. Upper front teeth 3a, 3a to upper back teeth 3f, 3f are planted on the upper jaw 1 from the center to the left and right sides, and lower front teeth 4a, 4a to lower back teeth 4f, 4f from the center to the left and right sides of the lower jaw 2. The upper front teeth 3a, 3a to the upper back teeth 3f, 3f form the upper dental arch 3, and the lower front teeth 4a, 4a to the lower back teeth 4f, 4f form the lower dental arch 4.

  As can be seen with reference to FIGS. 1 to 3, the correction device 5 according to the present embodiment includes an upper resin plate 6 that is mounted on the inner surface of the upper jaw 1, and a lower resin plate 7 that is mounted on the inner surface of the lower jaw 2. Are connected by spring-shaped substantially U-shaped connecting members 8 and 8 so that the front sides of both resin plates 6 and 7 are opened and closed, and the upper resin plate 6 is connected to the outer surface of the upper dental arch 3. The upper arcuate wire 9 applied along the lower dental arch 4 is attached to the lower resin plate 7 and the lower arcuate wire 10 applied along the outer surface of the lower dental arch 4 is attached to the lower resin plate 7.

The upper resin plate 6 is composed of a pair of divided plates 6a and 6a that are divided into left and right parts, that is, the interval between the divided end surfaces, that is, the two divided plates 6a and 6a. They are integrally connected by an expansion / contraction coupler 11 whose interval can be adjusted. The lower resin plate 7 is also composed of a pair of divided plates 7a and 7a that are divided into left and right, and an expansion / contraction coupler that can adjust the expansion / contraction of the distance between the two divided plates 7a, 7a, which is the distance between the divided end surfaces. 11 are integrally connected.

  As shown in FIG. 5 (showing the lower bow wire 10 side), the upper and lower arched wires 9 and 10 are divided into left and right parts, and the divided end portions 9a, 9a, 10a, and 10a can be telescopically extended. It is connected. That is, as shown in FIG. 5, a base end portion 12o of a metal guide tube 12 is connected to one of the divided end portions 9a and 10a by welding (the weld portion is indicated by W). The split end portions 9a and 10a are slidably inserted, whereby both split end portions are telescopically connected in a telescopic manner.

  Further, the divided end portions 9a, 9a of the upper bow wire 9 are connected to the other divided end portions in a telescopic manner via the guide tube 12 as described above, and the opposite end portions 9b, 9b are Abutting portions 13 and 13 that abut on the outer surface of the tooth 3d of the upper dental arch 3 are formed on the front side thereof, and extend so as to pass through the gap between the teeth 3c and 3d, and the outer end of the upper resin plate 6 on the front side It is embedded and fixed in the part (see FIG. 2 and FIG. 5). That is, both end portions 9b, 9b of the upper bow wire 9 are embedded and fixed at the front outer side end portion of the upper resin plate 6 with the contact portions 13, 13 formed on the front side thereof. In addition, the rear end of the upper arch wire 9 is engaged with a latching portion 14 that can be swung around a tooth 3f (second molar) of the upper dental arch 3 and a mortar surface of the tooth 3f. A substantially U-shaped locking piece 15 is attached.

  Further, the divided end portions 10a, 10a of the lower arched wire 10 are also telescopically connected to the other divided end portions via the guide tube 12, and the opposite end portions 10b, 10b are connected to the lower teeth row. In a state in which a contact portion 16 that contacts the outer surface of the teeth 4d and 4e of the arch 4 is formed, it is embedded and fixed to the outer end portion of the front side of the lower resin plate 7 (FIGS. 2 and 2). 5). That is, both end portions of the lower arcuate wire 10 are fixed to the front side outer end portion of the lower resin plate 7 with the contact portions 16 formed in front of it. Further, a substantially U-shaped locking piece 17 that is locked on the acetabular surface of the tooth 4f (second deciduous molar) of the lower dental arch 4 is attached to the rear side outer end of the lower arched wire 10. .

  As can be seen from FIG. 3, a pair of connecting members 8 for connecting the upper resin plate 6 and the lower resin plate 7 so that the front sides of both plates 6 and 7 are opened and closed are provided. As shown in FIG. 4, a plurality of wire bodies 18 (two in the drawing) having a spring property in a side view in a side view and resin-made outer tube tubes 19 fitted into these wire bodies 18 are formed. As shown in FIGS. 2 and 5, one end portions 18 a and 19 a of the linear body 18 and the outer tube 19 are embedded and fixed in the divided plates 6 a of the upper resin plate 6, and the other end portions 18 b and 19 b are By being embedded and fixed in each divided plate 7a of the lower resin plate 7, both the resin plates 6 and 7 are connected in a state in which the front side is opened in a substantially horizontal V-shape as shown in FIG. 2 (b). Is done. The wire 18 is formed of a dental cobalt-chromium alloy wire or a dental stainless steel wire, and the diameter is set to 0.7 mm.

  As shown in FIG. 5, the expansion / contraction coupling 11 for connecting the two divided plates 6a, 6a of the upper resin plate 6 (or the divided plates 7a, 7a of the lower resin plate 7) so as to be adjustable in size is a reverse screw. The shaft 20 extends between the holders 22 and 22 in which the threaded shaft 20 is cut and the guide shafts 21 and 21 located on both sides of the threaded shaft 20 are respectively attached to the divided plates 6a and 6a (7a and 7a). By inserting a rotary operation tool (not shown) into the hole 23 in the center of the screw shaft 20 and rotating the screw shaft 20 in one direction, both divided plates 6a, 6a (7a, 7a) moves away from each other to increase the distance between them and rotates in the opposite direction, both divided plates 6a, 6a (7a, 7a) can move toward each other to reduce the distance between them. .

  In using the straightening device 5 configured as described above, the straightening device 5 is slightly closed by pressing the front side of the resin plates 6 and 7 from the state shown in FIG. The upper resin plate 6 is pushed into the patient's mouth from the rear side, and the upper resin plate 6 is brought into close contact with the inner surface side of the upper jaw 1 (see FIG. 1), and as shown in FIG. Abutting against the outer surface of the arch 3, the abutting portions 13, 13 at both ends thereof are brought into contact with the outer surface of the tooth 3 d of the upper dental arch 3, and the latching portions 14, 14 are brought into the teeth 3 f, f (second milk The locking pieces 15 and 15 are locked onto the mortar surface of the teeth 3f and f, respectively, and the upper resin plate 6 is brought into close contact with the inner surface side of the lower jaw 2 (see FIG. 1). Then, as shown in FIG. 3, the lower arch wire 10 is applied to the outer surface of the upper dental arch 4, and the contact portions 16, 16 are connected to the lower dental arch. Tooth 4d, is brought into contact to the outer surface of 4e, causing the engaging piece 17 engages on the die surface of the tooth 4f (second deciduous molars).

  At this time, the upper resin plate 6 and the lower resin plate 7 are connected by a spring-like substantially U-shaped connecting member 8 in a side view so that the front sides of the resin plates 6 and 7 are opened and closed. If the device 5 is slightly closed at the front side and pushed into the patient's mouth from the rear side, the upper and lower resin plates 6 and 7 are brought into close contact with the inner surfaces of the upper jaw 1 and the lower jaw 2 respectively. The arched wires 9 and 10 are applied to the outer surfaces of the upper and lower dental arches 3 and 4, respectively, and can be easily and easily attached to the upper and lower jaws 1 and 2.

  The straightening device 5 has an upper bow wire 9 attached to the upper resin plate 6, hooks 14 and locking pieces 15 are attached to both ends of the upper bow wire 9, and a lower bow shape is attached to the lower resin plate 7. Since it has a simple structure in which the wire 10 and the locking pieces 17 and 17 are simply attached, the feeling of wearing is not impaired and the correction device is easy to wear for children.

  Further, a pair of left and right connecting members 8 for connecting the upper resin plate 6 and the lower resin plate 7 are provided, and each connecting member 8 includes a plurality of linear bodies 18 having a spring property and having a substantially U shape in side view, It consists of a resin-made outer tube 19 fitted into these wire bodies 18. Therefore, the stress applied to the linear body 18 is dispersed by the plurality of substantially U-shaped linear bodies 18 in a side view, and furthermore, since these linear bodies 18 are fitted by the outer tube 19, The load is reduced. Thereby, even if the upper resin plate 6 and the lower resin plate 7 are provided vertically, the connecting member 8 is not easily broken during use.

  Further, a pair of left and right connecting members 8 for connecting the upper resin plate 6 and the lower resin plate 7 are provided, and each connecting member 8 includes a plurality of linear bodies 18 having a spring property and having a substantially U shape in side view, and these lines. Since it consists of a resin-made outer tube 19 fitted to the body 18, the upper arched wire 9 and the lower arched wire 10 are formed of independent members and have a spring property. Therefore, by connecting the upper resin plate 6 and the lower resin plate 7 with such a connecting member 8, the upper resin plate 6 and the lower resin plate 7 can be freely moved in accordance with the movement in the oral cavity of the patient. Can do. Further, even if the upper resin plate 6 and the lower resin plate 7 are freely moved in accordance with the movement in the oral cavity of the patient in this way, as described above, by the plurality of U-shaped linear bodies 18 in side view, as described above. The stress applied to the wire 18 is dispersed, and furthermore, since the wire 18 is fitted with the outer tube 19, the load on the wire 18 is reduced, so that the connecting member 8 is in use. There is no such thing as breaking easily.

  From the above, according to the present embodiment, it is possible to improve the patient's occlusion more effectively.

  In addition, it is preferable to set the diameter of the said linear body 18 according to the number. That is, when two wire bodies 18 are used, the diameter is preferably set to 0.7 mm. When three wire bodies 18 are used, the diameter is preferably set to 0.5 mm. When four wire bodies 18 are used, The diameter is preferably set to 0.3 mm. As described above, if the diameter is reduced as the number of linear bodies is increased, the diameter of the outer tube 19 is not increased so much that the feeling of wearing when using the correction device 5 is reduced. In addition, the strength can be kept constant. However, in order to keep the strength constant, the diameter of the wire 18 is preferably set to 0.3 mm to 0.7 mm. If the diameter of the wire 18 is set to less than 0.3 mm, the strength of the wire itself is reduced and the wire itself is easily broken. If the diameter is set to be larger than 0.7 mm, the load applied to one wire increases. This is because metal fatigue is likely to occur and the wire itself is easily broken.

  By the way, in this embodiment, although the example which provides the right and left connection member 8 was shown, you may provide more. However, in order not to make the feeling of wearing when using the correction device 5 uncomfortable, it is preferable to provide a pair of left and right connecting members 8.

  On the other hand, the upper and lower resin plates 6 and 7 are divided into left and right parts, and the straightening device 5 is integrally connected by an expansion / contraction coupling tool 11 capable of adjusting expansion / contraction between the divided end surfaces. The arcuate wires 9 and 10 are divided into left and right parts, and the divided end parts are connected so as to be telescopically extendable. Therefore, for example, as can be seen from FIG. 5 showing the case of the lower resin plate 7, when the expansion / contraction coupler 11 is expanded and the divided plates 7 a and 7 a of the lower resin plate 7 are moved away from each other, accordingly. The split arches 10a and 10a of the lower arcuate wire 10 move away from each other so that the lower arcuate wire 10 extends while maintaining its original shape, and the split plates 7a and 7a of the lower resin plate 7 are moved by the expansion / contraction operation. When moved in a direction approaching each other, the divided end portions 10a, 10a of the lower arcuate wire 10 move in a direction approaching each other, and the lower arcuate wire 10 contracts while maintaining its original shape. The same applies to the upper resin plate 6.

  Accordingly, the orthodontic apparatus 5 is attached to the upper jaw 1 and the lower jaw 2 as shown in FIG. 3, and the upper dental arch 3 and the lower dental arch 4 are spread laterally to adjust the upper and lower dental dents, respectively. In the case where the expansion / reduction connector 11 is expanded and the divided plates 6a and 6a of the upper resin plate 6 are moved away from each other, the divided ends 9a and 9a of the upper arcuate wire 9 are moved away from each other. Since the upper arch wire 9 is moved and stretched, the upper arch wire 9 can be moved in a balanced manner to the target position to be treated without being deformed and pressing the upper dental arch 3. Further, when the divided plates 7a and 7a of the lower resin plate 7 are moved away from each other by the expansion operation of the expansion / contraction coupler 11, the divided end portions 10a and 10a of the lower arcuate wire 10 are moved away from each other. Since the lower arch wire 10 is stretched, the lower arch wire 10 can move to the target position to be treated in a balanced manner without pressing the lower dental arch 4 like the upper arch wire 9. it can. Therefore, according to the present embodiment, it is possible to easily and easily move the upper and lower arcuate wires 9 and 10 to the target positions for treatment in a balanced manner simply by operating the expansion / contraction coupler 11.

DESCRIPTION OF SYMBOLS 1 Upper jaw 2 Lower jaw 3 Upper dental arch 4 Lower dental arch 5 Correction apparatus 6 Upper resin plate 6a Upper resin plate division plate 7 Lower resin plate 7a Lower resin plate division plate 8 Connecting member 9 Upper arch wire 10 Lower arch wire 11 Expanding / contracting connector 12 Guide tube 18 Line 19 Outer tube

Claims (2)

The upper resin plate attached to the inner surface of the upper jaw and the lower resin plate attached to the inner surface of the lower jaw are opened and closed by a spring-like substantially U-shaped connecting member on the front side of both resin plates. The upper resin plate is attached with an upper arch wire that is applied along the outer surface of the upper dental arch, and the lower resin plate is attached with a lower arch wire that is applied along the outer surface of the lower dental arch. ,
The connecting member is provided with at least a pair of left and right, and each connecting member includes a plurality of substantially U-shaped linear bodies having a spring property, and a resin-made outer tube fitted to the linear bodies. .   Each of the upper and lower resin plates is divided into left and right parts, and is integrally connected by an expansion / contraction coupler that can adjust the expansion / contraction between the divided end faces. The straightening device according to claim 1, wherein the divided end portions are telescopically connected in a telescopic manner.

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