JP5121961B2 - Orthodontic appliance manufacturing jig and orthodontic appliance manufacturing method - Google Patents

Description

  The present invention relates to a technique for producing an orthodontic appliance to be mounted in a patient's mouth to correct a dentition.

  As one of dental treatment techniques for correcting a patient's dentition, lingual correction is known in which an orthodontic appliance such as an ideal archwire or a bracket is attached to the back of a tooth for treatment. The orthodontic appliance used in this lingual correction needs to be in an appropriate form corresponding to the individual patient's dental pattern. For this reason, in the conventional orthodontic appliance manufacturing process, the ideal ideal teeth as well as the rearranged set-up teeth based on the original dental model that is modeled after the dental mold in the oral cavity of the patient. A mold model is produced, and using this set-up tooth model, production of an ideal arch wire and positioning of a bracket are performed (for example, refer to Patent Document 1).

  As described in Patent Document 1, in the manufacturing process of a conventional orthodontic appliance, an orthodontic wire material is bent in accordance with the lingual side surface of a set-up tooth model tooth to provide an ideal arch wire. And a method of attaching a bracket corresponding to each tooth to the ideal archwire is employed.

JP-A-11-99161

  As described in Patent Document 1 and the like, positioning of the bracket with respect to the setup tooth model is performed while supporting the ideal archwire along the dentition of the setup tooth model, so that accurate positioning is performed. It is not easy to perform, and positioning work requires a lot of time and labor, and the physical burden on the operator is also great.

  The problem to be solved by the present invention is to provide a technique capable of easily and accurately positioning an orthodontic appliance such as a bracket with respect to a setup tooth model.

The orthodontic appliance making jig of the present invention is provided with a wire holding means for holding at least a part of an orthodontic wire in a set-up tooth model produced based on a patient's tooth form ,
As the wire holding means, a wire locking tool having a locking portion to which the orthodontic wire can be attached and detached is attached to a part of the setup tooth model,
As the locking part, an orthodontic appliance manufacturing jig provided with a locking groove into which the orthodontic wire can be inserted and removed,
The wire locking tool includes a short columnar head, a columnar shaft portion having an outer diameter smaller than the head, and a plurality of spherical portions having an outer diameter substantially the same as the outer diameter of the shaft portion. Prepared,
The head portion and the shaft portion are integrally formed so as to be coaxial, and the plurality of spherical portions are each formed integrally on the outer periphery near the lower end of the shaft portion,
The wire locking tool is fixed in a state where the shaft portion and the spherical portion are embedded in a tooth neck portion of the setup tooth model . With such a configuration, it becomes possible to perform work while holding the orthodontic wire on the wire holding means of the setup tooth model, so positioning work of the orthodontic appliance such as a bracket with respect to the setup tooth model Can be performed easily and accurately.

Further, examples of the wire holding means, by a locking tool that the orthodontic wire has a possible locking portion detachably attached to a portion of the tooth-type model, engagement of the locking tool is a wire holding means Since it becomes possible to work on the part while attaching / detaching the orthodontic wire as necessary, it is effective in improving workability.

Furthermore , since the orthodontic wire is provided with a latching groove into which the orthodontic wire can be inserted / removed as the latching portion, the orthodontic wire is fitted into the latching groove, so that the orthodontic wire can be securely held. The detachability of the orthodontic wire is not lost.

On the other hand, in the orthodontic appliance manufacturing method of the present invention, in a state where at least a part of the orthodontic wire is held in the wire holding means provided in the set-up tooth model manufactured based on the tooth mold of the patient, In the orthodontic appliance manufacturing method for aligning the orthodontic appliance interposed between the patient's teeth and the orthodontic wire ,
As the wire holding means, a wire locking tool having a locking portion to which the orthodontic wire can be attached and detached is attached to a part of the setup tooth model,
As the locking part, provided with a locking groove into which the orthodontic wire can be inserted and removed,
The wire locking tool includes a short columnar head, a columnar shaft portion having an outer diameter smaller than the head, and a plurality of spherical portions having an outer diameter substantially the same as the outer diameter of the shaft portion. Prepared,
The head portion and the shaft portion are integrally formed so as to be coaxial, and the plurality of spherical portions are each formed integrally on the outer periphery near the lower end of the shaft portion,
The wire locking tool is fixed in a state where the shaft portion and the spherical portion are embedded in a tooth neck portion of the setup tooth model . With such a configuration, the positioning operation of the orthodontic appliance such as the bracket with respect to the setup tooth model can be easily and accurately performed.

  According to the present invention, it is possible to provide a technique capable of easily and accurately positioning an orthodontic appliance such as a bracket with respect to a setup tooth model.

It is a perspective view which shows the orthodontic appliance preparation jig which is embodiment of this invention. It is a perspective view of the latching tool which comprises the orthodontic appliance preparation jig shown in FIG. It is a perspective view of the latching tool which comprises the orthodontic appliance preparation jig shown in FIG. It is a perspective view which shows the use condition of the orthodontic appliance preparation jig shown in FIG.

  Hereinafter, an orthodontic appliance manufacturing jig 10 according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the orthodontic appliance making jig 10 is arranged based on an original tooth model (not shown) formed in accordance with a patient's tooth pattern and the ideal ideal teeth. As a wire holding means for holding a part of the orthodontic wire 20 which is a material of the ideal arch wire 21 (see FIG. 4), the set-up tooth model 11 prepared in the corrected state is connected to a plurality of wires. Stoppers 12 and 13 are provided. Each of the plurality of wire locking devices 12 and 13 is disposed on the lingual side portion of the dentition portion 11a of the tooth model 11, and the two wire locking devices 12 are attached to the tooth neck portion 11b near the back teeth. The two wire lockers 13 are attached to the tooth neck portion 11b near the front teeth.

  As shown in FIGS. 2 and 3, the wire locking devices 12 and 13 include short cylindrical head portions 12 a and 13 a and cylindrical shaft portions 12 b and 13 b having outer diameters smaller than the head portions 12 a and 13 a, respectively. And a plurality of spherical portions 12c and 13c having substantially the same outer diameter as the outer diameters of the shaft portions 12b and 13b. The head portions 12a, 13a and the shaft portions 12b, 13b are integrally formed so as to be coaxial with each other, and the plurality of spherical portions 12c, 13c are respectively integrated with the outer periphery near the lower ends of the shaft portions 12b, 13b at intervals of 180 degrees. Is formed.

  A locking groove 12d that opens in the radial direction is provided on the upper surface side of the head portion 12a of the wire locking tool 12, and an upper surface side of the head portion 13a of the wire locking tool 13 opens in the diameter direction. A locking groove 13d is provided. The locking groove 12d of the wire locking tool 12 is formed in a closed state at the position of the shaft center 12e of the shaft portion 12b, and the locking groove 13d of the wire locking tool 13 is formed with the shaft center 13e of the shaft portion 13b. It is formed in a continuous state in the intersecting direction.

  As shown in FIG. 1, the wire locking devices 12 and 13 are fixed in a state where the shaft portions 12 b and 13 b and the spherical portions 12 c and 13 c are embedded in the tooth neck portion 11 b of the tooth model 11. The spherical portions 12c and 13c integrally formed on the outer periphery of the shaft portions 12b and 13b of the wire locking tools 12 and 13 are inclined or rotated when an external force is applied. Or an anchor function that prevents the tooth neck 11b from being detached.

  As shown in FIGS. 1 and 4, the end of the orthodontic wire 20 (or the ideal arch wire 21) can be inserted into and removed from the locking groove 12 d of the head 12 a of the wire locking tool 12. A part of the ideal arch wire 21 (or the ideal arch wire 21) (a part other than the end part) can be inserted into and removed from the locking groove 13d of the head 13a of the wire locking tool 13.

  Next, how to use the orthodontic appliance manufacturing jig 10 will be described with reference to FIG. As shown in FIG. 4, the heads 12 a and 13 a of the plurality of wire locking tools 12 and 13 arranged on the lingual side of the dentition portion 11 of the dental model 11 constituting the orthodontic appliance manufacturing jig 10. A portion of the ideal arch wire 21 produced by bending the orthodontic wire 20 is fitted into the locking grooves 12d and 13d to be fixed. In this case, both end portions of the ideal arch wire 21 are fitted into the locking grooves 12d of the two wire locking tools 12, respectively, and two portions near the bent portion of the ideal arch wire 21 are two wire locking portions. It is inserted into the locking groove 13d of the tool 13.

  When set as shown in FIG. 4, the ideal arch wire 21 is held in a fixed posture with respect to the dental model 11, and in this state, a bracket (between the patient's teeth and the ideal arch wire 21 ( (Not shown) positioning (positioning operation) can be performed. Since the ideal archwire 21 is held so as not to move easily during the alignment operation, the bracket positioning operation with respect to the setup tooth model 11 can be easily and accurately performed, and the physical burden on the operator is also reduced. can do.

  Since the ideal arch wire 21 can be inserted into and removed from the locking grooves 12d and 13d of the wire locking tools 12 and 13 of the tooth model 11, the ideal arch wire 21 is used when not in use. Can be removed and stored. In addition, when it is necessary to align the bracket again, the ideal arch wire 21 is fitted into the locking grooves 12d and 13d of the wire locking tools 12 and 13 so that the tooth model 11 can be accurately adjusted. The ideal archwire 21 can be reset to a proper position, and the bracket positioning operation performed again thereafter can be performed easily and accurately.

Other advantages of the orthodontic appliance making jig 10 shown in FIG. 1 are as follows.
(1) Since the SET-UP can be replaced and the torque can be changed after the caries treatment with the ideal arch wire 21 set, it is easy to adjust the SET-UP model.
(2) The occlusion can be confirmed with the ideal archwire 21 set.
(3) Since all the fixed portions of the ideal archwire 21 are also brought to the tooth neck, the area of the resin base formed to cover the teeth can be secured, and a stable core can be produced. .
(4) Compatible with tube brackets.
(5) Easy to prepare custom wire and easy to see wire bending.
(6) The produced ideal arch wire 21 can also be used as a finishing wire.
(7) Since the ideal arch wire 21 is fixed to the left and right rear portions, the right and left misalignment of the ideal arch wire 21 does not occur.

  The orthodontic appliance production jig and orthodontic appliance production method of the present invention are widely used in the orthodontic field as a technique for producing orthodontic appliances to be installed in the oral cavity of a patient to correct dentition. can do.

DESCRIPTION OF SYMBOLS 10 Orthodontic appliance preparation jig 11 Setup tooth model 11a Tooth part 11b Tooth neck part 12, 13 Wire locking tool 12a, 13a Head part 12b, 13b Shaft part 12c, 13c Spherical part 12d, 13d Locking groove 12e , 13e Axis 20 Orthodontic wire 21 Ideal arch wire

Claims (2)

Provided with a wire holding means for holding at least a part of an orthodontic wire in a set-up tooth model made based on a patient's tooth pattern ,
As the wire holding means, a wire locking tool having a locking portion to which the orthodontic wire can be attached and detached is attached to a part of the setup tooth model,
As the locking part, an orthodontic appliance manufacturing jig provided with a locking groove into which the orthodontic wire can be inserted and removed,
The wire locking tool includes a short columnar head, a columnar shaft portion having an outer diameter smaller than the head, and a plurality of spherical portions having an outer diameter substantially the same as the outer diameter of the shaft portion. Prepared,
The head portion and the shaft portion are integrally formed so as to be coaxial, and the plurality of spherical portions are each formed integrally on the outer periphery near the lower end of the shaft portion,
The orthodontic appliance manufacturing jig, wherein the wire locking tool is fixed in a state where the shaft portion and the spherical portion are embedded in a tooth neck portion of the setup tooth model . Intervene between the patient's teeth and the orthodontic wire while holding at least a part of the orthodontic wire on the wire holding means provided on the set-up tooth model created based on the patient's dental mold In the orthodontic appliance manufacturing method for positioning the orthodontic appliance to be performed ,
As the wire holding means, a wire locking tool having a locking portion to which the orthodontic wire can be attached and detached is attached to a part of the setup tooth model,
As the locking part, provided with a locking groove into which the orthodontic wire can be inserted and removed,
The wire locking tool includes a short columnar head, a columnar shaft portion having an outer diameter smaller than the head, and a plurality of spherical portions having an outer diameter substantially the same as the outer diameter of the shaft portion. Prepared,
The head portion and the shaft portion are integrally formed so as to be coaxial, and the plurality of spherical portions are each formed integrally on the outer periphery near the lower end of the shaft portion,
The orthodontic appliance manufacturing method, wherein the wire locking tool is fixed in a state in which the shaft portion and the spherical portion are embedded in a tooth neck portion of the set-up tooth model .

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