JP2011045530A - Dental jaw position correcting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sustain a required inherent expansion action to obtain an efficient expansion effect, to eliminate a troublesome complicated operation, to facilitate maintenance, and to enhance stability when attached, in a jaw correcting device. <P>SOLUTION: This jaw correcting device includes a pressing connection part 4 comprising an elastic part 5 interposed between a pair of floor dividing parts 2p, 2q to energize the paired floor dividing parts 2p, 2q to left and right separate directions, when constituting the jaw correcting device for expanding left and right dentitions TLp, TLq toward lateral sideways, a connection link 6 astride the paired floor dividing parts 2p, 2q, and connection brackets 7p, 7q provided respectively in the paired floor dividing parts 2p, 2q, and supporting respectively lateral-directionally slidably end part sides of the connection link 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dental jaw position correcting device that is suitable for use in correcting the left and right dentitions laterally.

  In general, in the field of dentistry, when the width of the dentition is narrow, orthodontic treatment for expanding the width of the dentition is performed. Usually, a chin position correction device (floor expansion device) is used for this orthodontic treatment. This orthodontic appliance is equipped with an adjustment unit that adjusts the pressure applied to expand the dentition. By adjusting this adjustment unit, the dentition is expanded with a strong force of several hundred grams to several kilograms. be able to.

  Conventionally, as this kind of chin position correcting device, a chin position correcting device disclosed in Patent Document 1 is known, which includes a resin plate divided into a left plate and a right plate. A left and right plate is connected to expand the width in the left-right direction, and the left plate and the right plate are separated by turning the screw of the expansion device, and the width in the left-right direction is increased. There has been disclosed a jaw position correcting device that enlarges the width of the wearer's upper jaw in the left-right direction.

JP 2008-183126 A

  However, the conventional jaw position correcting device described above has the following problems.

  First, the left plate and the right plate are expanded by turning the screw, and this state is left for a certain period of time to be expanded (corrected), so that the expansion action decreases as the expansion proceeds. Therefore, it is difficult to maintain the necessary original enlargement effect and to obtain an efficient enlargement effect.

  Secondly, when using it, it is necessary to set it by turning the screw after it is installed in the user's oral cavity, and it is necessary to perform troublesome and troublesome operations, and it is easy to loosen during wearing. , Frequent re-setting is required, and maintenance becomes difficult. In addition, there is a possibility that the screw itself may be loosened, and there is a difficulty in stability at the time of mounting.

  An object of the present invention is to provide a dental jaw position correcting device that solves the problems existing in the background art.

  In order to solve the above-described problems, the dental jaw position correcting device 1 according to the present invention is provided integrally with a pair of floor division parts 2p and 2q divided into left and right parts, and each floor division part 2p and 2q, and each floor. The tooth locking portions 3p, 3q, 3m for locking the divided portions 2p, 2q to one or more teeth Tp, Tq, Tf... And the distance between the pair of floor divided portions 2p, 2q can be changed. When forming a jaw position correcting device for expanding the left and right tooth rows TLp, TLq laterally, the pressure connecting portion 4 for connecting the divided portions 2p, 2q to each other is provided. An elastic portion 5 that urges the pair of floor split portions 2p, 2q in the direction of separating left and right by interposing 2q, a connecting link 6 straddling the pair of floor split portions 2p, 2q, and a pair of Provided in each of the floor split parts 2p, 2q, the end side of the connecting link 6 is in the left-right direction Slidably supported connecting bracket 7p, characterized in that it comprises a pressurizing connecting portion 4 and a 7q.

  In this case, according to a preferred aspect of the invention, the elastic portion 5 can be a pair of coil springs 5 f and 5 r that are spaced apart from the front and rear of the connecting link 6. Further, the pair of floor split portions 2p, 2q can be provided with spring holding holes 11p, 11q,... Inserted into the opposing surfaces 2pf, 2qf facing each other and the end portions of the coil springs 5f, 5r. On the other hand, an enlargement amount restricting portion 12 that restricts an enlargement amount when the pair of floor split portions 2p and 2q are separated and enlarged can be provided. The enlargement amount restricting portion 12 is provided in the left-right direction provided on the connecting link 6. And the stopper screws 15p, 15q that can be screwed into the screw holes 14pa, 14qa provided in the connection brackets 7p, 7q. Further, the expansion amount restricting portion 12 has screw holes 14pa, 14pb ..., 14qa, 14qb ... provided at a plurality of different positions of the connection brackets 7p, 7q, and a screw hole 14pa for screwing the stopper screws 15p, 15q. .., 14qa... Can be provided with an enlargement amount setting means 12s that can set different enlargement amounts.

  According to the dental jaw position correcting apparatus 1 according to the present invention having such a configuration, the following remarkable effects can be obtained.

  (1) The elastic portion 5 is interposed between the pair of floor split portions 2p and 2q to urge the pair of floor split portions 2p and 2q in the left and right separating directions, and the pair of floor split portions 2p and 2q. Since the end portions of the connecting link 6 are slidably supported in the left-right direction by the connecting brackets 7p and 7q provided respectively, the enlargement action does not deteriorate even when the enlargement progresses. Thereby, since the required original expansion effect can be maintained, an efficient expansion effect can be obtained.

  (2) When using, since setting is performed before mounting in the user's oral cavity, and the chin position correcting device 1 for which the setting has been completed can be mounted on the user, troublesome and troublesome operations are not required. Moreover, since loosening does not occur in the middle of mounting and no adjustment screw or the like is used, frequent re-setting becomes unnecessary, maintenance can be facilitated, and stability during mounting can be improved.

  (3) According to a preferred embodiment, if a pair of coil springs 5f and 5r that are spaced apart from the front and rear of the connecting link 6 are used for the elastic portion 5, the pressure balance can be stabilized. It can contribute to improvement and stabilization of the expansion action.

  (4) According to a preferred embodiment, the pair of floor split portions 2p, 2q are provided with spring holding holes 11p, 11q,... Inserted into the opposed surfaces 2pf, 2qf facing each other and the end portions of the coil springs 5f, 5r. For example, unnecessary protrusion and exposure of the coil springs 5f and 5r from the floor split portions 2p and 2q can be avoided, and protection (function protection) of the coil springs 5f and 5r can be achieved.

  (5) By providing the enlargement amount restricting portion 12 that restricts the enlargement amount when the pair of floor split portions 2p and 2q are separated and enlarged according to a preferred aspect, the enlargement effect is smoothly maintained up to the restricting enlargement amount. In addition, it is possible to prevent an unnecessary expansion action exceeding the amount of expansion to be regulated.

  (6) According to a preferred embodiment, the enlargement amount restricting portion 12 is provided with slits 13p, 13q elongated in the left-right direction provided in the connecting link 6, and screw holes provided in the connecting brackets 7p, 7q through the slits 13p, 13q. If the connecting links 6 and the connecting brackets 7p and 7q can be used directly (combined) if they are configured with stopper screws 15p and 15q that can be screwed to 14p and 14q, the expansion amount restricting portion 12 can be easily configured with a small number of parts. It can also contribute to miniaturization.

  (7) According to a preferred embodiment, the enlargement amount restricting portion 12 has screw holes 14pa, 14pb ..., 14qa, 14qb ... provided at a plurality of different positions on the connection brackets 7p, 7q, and screwed stopper screws 15p, 15q. By providing the enlargement amount setting means 12s that can set different enlargement amounts by selecting the screw holes 14pa ..., 14qa ..., the optimum enlargement amount that matches the user can be easily set, and the usability and versatility Can be increased.

A bottom view of a jaw position correcting device according to a preferred embodiment of the present invention, The perspective view which expands and shows a part of the same position correction device, An exploded perspective view showing some parts of the orthognathic correction device, A partially broken bottom view showing an enlarged part of the same jaw position correction device, Action explanatory diagram of the same jaw correction device, AA line sectional view in FIG.

  Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration (used parts) of the jaw position correcting device 1 according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 1, the chin position correcting device 1 is basically provided with a pair of floor division parts 2p and 2q divided into left and right parts, and each floor division part 2p and 2q, and each floor division part has a basic structure. The distance between the three tooth locking portions 3p, 3q, 3m for locking the portions 2p, 2q to one or more teeth Tp, Tq, Tf... And the pair of floor split portions 2p, 2q can be changed. The pressure dividing connecting portion 4 is configured to connect the floor dividing portions 2p and 2q.

  A pair of floor division | segmentation part 2p, 2q can be mounted | worn with the oral cavity inner surface of an upper jaw. Each of the floor division parts 2p, 2q is integrally formed with a synthetic resin so as to be flat as a whole, and is formed into an outer shape in consideration of the shape of the oral inner surface of the upper jaw. Further, the tooth locking portions 3p, 3q, and 3m are formed by metal wires W, respectively. The tooth locking portion 3p is formed by bending the wire W into a U shape, and one side of the tooth locking portion 3p that becomes both ends of the wire W is integrated with the floor split portion 2p by insert molding or assembly. At the same time, the other side of the tooth locking portion 3p on the curved side of the wire W is protruded laterally from the floor dividing portion 2p. Thereby, the tooth locking part 3p can be fitted and locked with respect to one back tooth Tp. Similarly, the tooth locking portion 3q is formed by bending the wire W into a U shape, and one side of the tooth locking portion 3q which is the both end sides of the wire W is formed by insert molding or assembly with respect to the floor division portion 2q. In addition to the integration, the other side of the tooth locking portion 3q on the curved side of the wire W is protruded laterally from the floor division portion 2q. Thereby, the tooth locking part 3q can be fitted and locked to the other back tooth Tq. The tooth locking part 3m forms the wire W in a fan shape, and one side of the tooth locking part 3m that is the both ends of the wire W is insert-molded or assembled to both the floor split parts 2p and 2p, respectively. And the other side of the tooth locking portion 3p on the curved side of the wire W is projected forward from the floor split portions 2p and 2q. Thereby, the tooth locking portion 3m can be fitted and locked to the plurality of front teeth Tf.

  On the other hand, the pressurizing connecting portion 4 has, as a basic configuration, an elastic portion that urges the pair of floor split portions 2p and 2q in the left and right separating directions by being interposed between the pair of floor split portions 2p and 2q. 5, the connecting link 6 straddling the pair of floor split portions 2p, 2q, and the pair of floor split portions 2p, 2q, respectively, are supported so as to be slidable in the left-right direction. The connecting brackets 7p and 7q are provided.

  In this case, as shown in FIG. 1, a pair of coil springs 5 f and 5 r disposed at the front and rear separated positions of the connecting link 6 are used for the elastic portion 5. Each of the coil springs 5f and 5r has an intermittent force that exerts a force necessary for the expansion action of the jaw position correcting device 1. Therefore, as the coil springs 5f and 5r, a plurality of types of coil springs 5f, 5r,... Having different breaking forces can be prepared and used in accordance with the use conditions, the use environment, etc. of the user. In this way, if the pair of coil springs 5f and 5r arranged at the front and rear sides of the connecting link 6 are separated from each other in the elastic portion 5, the pressure balance can be stabilized. There is an advantage that can contribute to the stabilization of. On the other hand, as shown in FIG. 4 and FIG. 6, spring holding holes 11p, 11q,... Inserted into end faces of the coil springs 5f, 5r are inserted into the opposing surfaces 2pf, 2qf facing each other in the floor divided portions 2p, 2q. Is provided. That is, a pair of front and rear spring holding holes 11p and 11p are provided on the opposing surface 2pf of one floor division 2p, and a pair of front and rear spring holding holes 11q and 11q are provided on the opposing surface 2qf of the other floor division 2q. . If such spring holding holes 11p and 11q are provided, unnecessary protrusion and exposure of the coil springs 5f and 5r from the floor split portions 2p and 2q can be avoided, and the coil springs 5f and 5r can be protected (function protection). Can be achieved.

  Further, as shown in FIG. 3, the connecting link 6 is formed by a single elongated plate material, and both sides in the longitudinal direction (left and right direction) are formed in a semicircular shape so as to be easily inserted into connecting brackets 7p and 7q described later. In addition, an elongated slit 13 is provided in the horizontal direction in the plane. Further, as shown in FIG. 3, the connecting bracket 7 p is formed in a flat frame shape having a guide hole 7 pg through which one end side of the connecting link 6 is inserted. In addition to providing slits 7ps, three screw holes 14pa, 14pb, 4pc are provided at predetermined intervals along the left-right direction at the center of the other surface that is wide. Thereby, each screw hole 14pa, 14pb, 4pc is provided in a plurality of different positions in the connection bracket 7p. The other connecting bracket 7q is configured in the same manner as the connecting bracket 7p described above. Accordingly, two connecting brackets 7p are prepared, one is used as the connecting bracket 7p, and the other is used as the connecting bracket 7q. In the connecting bracket 7q, 7qg indicates a guide hole, 7ps indicates a slit, and 14qa, 14qb, and 4qc indicate screw holes, respectively.

  On the other hand, reference numerals 15p and 15q denote stopper screws that can be screwed into the screw holes 14pa, 14qa provided in the connecting brackets 7p, 7q. The screw portions of the stopper screws 15p and 15q can be inserted through the slits 7ps and 7qs and the slit 13, respectively, and the heads of the stopper screws 15p and 15q can be brought into contact with the surfaces of the coupling brackets 7p and 7q. Therefore, the slit 13 provided in the connecting link 6 and the stopper screws 15p, 15q that are inserted into the slit 13 and can be screwed into the screw holes 14pa, 14qa of the connecting brackets 7p, 7q are a pair of floor split portions 2p, An enlargement amount restricting portion 12 that restricts an enlargement amount when 2q is separated and enlarged is configured. Providing such an enlargement amount restricting section 12 can smoothly maintain the enlargement action up to the restricted enlargement amount, and can prevent an unnecessary enlargement action exceeding the restricted enlargement amount. In addition, since the connecting link 6 and the connecting brackets 7p and 7q can be directly used (combined), the enlargement amount restricting portion 12 can be easily configured with a small number of parts, and can contribute to a reduction in size and size. Further, the screw holes 14pa, 14pb,..., 14qb, 14qb,... Provided at a plurality of different positions of the connecting brackets 7p, 7q are differently enlarged by screwing stopper screws 15p, 15q into the selected screw holes 14pa, 14qa,. An enlargement amount setting means 12s capable of setting the amount is configured. Providing such an enlargement amount setting means 12s has an advantage that it is possible to easily set an optimum enlargement amount that matches the user, and to improve usability and versatility.

  Next, an assembly method, a usage method, and a function of the jaw position correcting device 1 according to the present embodiment will be described with reference to FIGS.

  First, floor division parts 2p, 2q and tooth locking parts 3p, 3q, 3m corresponding to the user are manufactured. In this case, as described above, the floor split portions 2p, 2q are integrally formed of synthetic resin, and the tooth locking portions 3p, 3q, 3m are curved (bent) by the wire W. As shown in FIG. 1, the tooth locking portions 3p, 3q, 3m are integrated with the floor split portions 2p, 2q by insert molding or assembly, and the connecting brackets 7p, 7q are inserted. Integrate by molding or assembly. At this time, as shown in FIGS. 2 and 6, each of the connecting brackets 7p and 7q can be embedded in the floor split portions 2p and 2q, leaving only one surface provided with the slits 7ps and 7qs. FIG. 6 shows a state in which the connecting bracket 7q is embedded in the floor division part 2q. FIG. 6 shows a case where the floor split portion 2q facing the bottom surface portion of the connection bracket 7q is provided with a recess 2qr for releasing the tip of the stopper screw 15q screwed to the connection bracket 7q, but this recess 2qr is not present. Alternatively, the recess 2qr may be formed as a screw hole.

  Next, one end side of each of the coil springs 5f and 5r is inserted into the spring holding holes 11p and 11p provided before and after the floor dividing portion 2p, and one end side of the connection link 6 is inserted into the guide hole 7pg of the connection bracket 7p. To do. At this time, as the coil springs 5f and 5r to be used, a coil spring having an optimum breaking force matched with the user is selected from a plurality of types of coil springs 5f, 5r. Then, the stopper screw 15p is passed through the slit 7ps of the connecting bracket 7p and the slit 13 of the connecting link 6, and then screwed into the selected screw hole 14pa. Thereafter, the other end side of each of the coil springs 5f and 5r is inserted into the spring holding holes 11q and 11q provided at the front and rear of the other floor dividing portion 2q, and the other end side of the connecting link 6 is guided by the connecting bracket 7q. Insert into hole 7qg. Then, the stopper screw 15q is passed through the slit 7qs of the connecting bracket 7q and the slit 13 of the connecting link 6, and then screwed into the selected screw hole 14qa. Thereby, the assembly of the jaw position correcting device 1 is completed.

  By the way, in the jaw position correcting device 1, if the stopper screws 15p and 15q are screwed into the screw holes 14pa and 14qa located outside the connecting brackets 7p and 7q, the amount of enlargement to be regulated is reduced and located inside. If the screw holes 14pc and 14qc are screwed together, the amount of enlargement to be restricted increases. Therefore, in use, the screw holes 14pc ... corresponding to the final target enlargement amount may be selected, or the screw holes 14pa ... positioned on the outside are selected first, and then the screw holes 14pb ..., 14pc ... You may select in steps in order. In this case, the left and right screw holes 14pa and 14qa may be selected at the same position, for example, screw holes 14pa and 14qa, or may be selected at different positions, for example, screw holes 14pa and 14qb. May be. FIG. 5 shows a state in which the stopper screw 15q is screwed into the screw hole 14qc. Now, when the stopper screw 15q is removed from the screw hole 14qc and replaced with the adjacent screw hole 14qb, the amount of enlargement can be reduced by Ls. The connection bracket 7q indicated by the phantom line indicates the relative position to be regulated when the enlargement amount is reduced by Ls with respect to the connection bracket 7q indicated by the solid line.

  On the other hand, before use, the user first selects the coil springs 5f, 5r and the screw holes 14pa, 14qa, etc., and adjusts the jaw position according to the user. Perform the optimal setting of 1. When the jaw position correcting device 1 is worn by the user, the full width in the left-right direction of the pair of floor split portions 2p and 2q is shortened against the intermittent force of the coil springs 5f and 5r. Attach to the inner surface of the oral cavity of the user's upper jaw. At this time, as shown in FIG. 1, the respective tooth locking portions 3p, 3q, 3m are fitted and locked to the corresponding back teeth Tp, Tq and front teeth Tf. Thereby, the wearing of the jaw position correcting device 1 is completed. Thus, according to the chin position correcting device 1 according to the present embodiment, when used, the chin position correcting device 1 is set before the setting in the user's oral cavity and this setting is completed. Since it can be worn by a person, troublesome and troublesome operations are not required. Moreover, since loosening does not occur in the middle of mounting and no adjustment screw or the like is used, frequent re-setting becomes unnecessary, maintenance can be facilitated, and stability during mounting can be improved.

  On the other hand, the jaw position correcting device 1 attached to the user is urged in the direction in which the floor split portions 2p and 2q are separated by the breaking force of the coil springs 5f and 5r, and the left and right tooth rows TLp and TLq (FIG. 1). ) Is expanded laterally. At this time, since the intermittent force of the coil springs 5f and 5r is always applied, even if the enlargement progresses, the enlargement action does not decrease. Therefore, since the necessary original expansion action can be maintained, an efficient expansion effect can be obtained.

  As mentioned above, although preferred embodiment was described in detail, this invention is not limited to such embodiment, It does not deviate from the summary of this invention in a detailed structure, a shape, a raw material, quantity, a numerical value, etc. It can be changed, added, or deleted arbitrarily.

  For example, although the case where the floor divided portions 2p and 2q are integrally formed of synthetic resin has been shown, the use of other materials and the implementation of forms such as combining metal wires are not excluded. Further, the shape and quantity of the tooth locking portions 3p, 3q, 3m can be arbitrarily implemented. Furthermore, although the pair of coil springs 5f and 5r that are spaced apart from the front and rear of the connecting link 6 is shown as the elastic portion 5, the implementation of only one of the coil springs 5f and 5r is not excluded. It does not exclude other elastic parts 5 such as springs. On the other hand, although the case where it formed with the plate material as the connection link 6 was shown, you may form with a shaft material etc. Moreover, although the form in the case of mounting | wearing the upper jaw with the jaw position correction apparatus 1 was shown, it can also mount | wear to a lower jaw by changing a form.

  The jaw position correcting device 1 according to the present invention can be used for various jaw position correcting devices, floor enlargement devices, and the like for correcting left and right dentitions in a lateral direction in the field of dentistry.

  1: Dental jaw position correction device, 2p: floor division part, 2q: floor division part, 2pf: facing surface, 2qf: facing surface, 3p: tooth locking part, 3q: tooth locking part, 3m: tooth locking Part, 4: connecting part for pressurization, 5: elastic part, 5f: coil spring, 5r: coil spring, 6: connecting link, 7p: connecting bracket, 7q: connecting bracket, 11p ...: spring holding hole, 11q ...: spring Holding hole, 12: Enlargement amount regulating portion, 12s: Enlargement amount setting means, 13: Slit, 14pa ...: Screw hole, 14qa ...: Screw hole, 15p: Stopper screw, 15q: Stopper screw, Tp: Teeth, Tq: Teeth, Tf ...: tooth, TLp: dentition, TLq: dentition

Claims (6)

  Between a pair of floor division parts, a pair of floor division parts divided into left and right, a tooth locking part that is provided integrally with each floor division part and that locks each floor division part with one or more teeth, and the pair of floor division parts A pressurizing connecting portion for connecting the floor splitting portions so that the distance can be changed, and in a dental jaw position correcting device for expanding the left and right dentitions laterally, between the pair of floor splitting portions. An elastic part that urges the pair of floor split parts in the direction of separating left and right by interposing, a connecting plate straddling the pair of floor split parts, and a pair of floor split parts, respectively, A dental jaw position correcting device comprising: the connecting portion for pressurization having a connecting bracket that slidably supports the end portions of the plate in the left-right direction.   2. The dental jaw position correcting device according to claim 1, wherein the elastic portion uses a pair of coil springs spaced apart in front and rear of the connecting plate.   3. The dental jaw position correcting device according to claim 2, wherein the pair of floor division portions have spring holding holes into which the end portions of the coil springs are inserted on opposing surfaces.   The dental jaw position correcting device according to claim 1, further comprising an enlargement amount restricting portion that restricts an enlargement amount when the pair of floor division portions are separated and enlarged.   The expansion amount restricting portion includes a slit that is elongated in a left-right direction provided in the connection plate, and a stopper screw that is inserted through the slit and can be screwed into a screw hole provided in the connection bracket. 4. The dental jaw position correcting device according to 4.   The enlargement amount restricting portion has screw hole provided at a plurality of different positions of the connection bracket, and includes an enlargement amount setting means capable of setting different enlargement amounts by selecting screw holes into which the stopper screws are screwed. The dental jaw position correcting device according to claim 5.

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