JP5466121B2 - Method of manufacturing orthodontic wire forming apparatus and orthodontic wire - Google Patents

Description

  The present invention relates to a method of manufacturing an orthodontic wire forming apparatus and an orthodontic wire for forming an orthodontic wire used for orthodontics.

  For orthodontic treatment of patients, for example, a method of correcting by attaching an orthodontic bracket to the lip side surface of the dentition and a method of correcting by attaching an orthodontic bracket to the lingual surface of the dentition (for example, Patent Document 1). Of these two types of orthodontic methods, the lingual orthodontic method will be specifically described with reference to FIG.

In the orthodontic method on the lingual side, the patient's dental impression is taken and an original dental model is made by pouring hard plaster into the dental impression. Next, each tooth of the original tooth model is divided to prepare a target tooth after orthodontics and a set-up tooth model rearranged.
In the setup tooth model M, a pseudo gingiva G is formed of a wax material, and the model teeth T1,..., T7 are arranged side by side on the pseudo gingival G (see, for example, FIG. 7A).
An orthodontic wire is formed along the inner side (back side) of the model tooth of the set-up tooth model M. Here, as the orthodontic wire, an orthodontic wire whose outer shape is shaped into a mushroom shape so as to be easily fitted to the dentition is used, and three arms are fixed to the mushroom-shaped orthodontic wire 110. These three arms 111, 111, 111 are installed from the inner side to the outer side (front side) between the model teeth T1,..., T7 of the setup tooth model M, and the orthodontic wire 110 is connected to the setup tooth model M. It is positioned and fixed to a predetermined portion of the model tooth.
Thereafter, the orthodontic brackets B1,..., B7 are attached to the orthodontic wire 110, and a resin for joining the bracket to the model teeth is injected between the bracket and each model tooth to join the brackets. Forming part. Through such a process, the orthodontic wire forming apparatus 101 for forming an orthodontic wire used for orthodontic treatment is manufactured (see, for example, FIG. 7B).
Next, the brackets B1,..., B7 that are integrated with the joints that copied the external shape (tooth form) of each model tooth are removed, and the brackets are attached to the respective teeth in the patient's oral cavity. The orthodontic wire 110 in the initial process is fastened (ligated), and the thickness of the orthodontic wire 110 is gradually increased according to the degree of orthodontic correction. It has been broken.

By the way, in the orthodontic wire described above, there is a ready-made arch wire having an arch shape in addition to a mushroom-shaped outer shape. Intricately bend the shape of the archwire so that the relative distance between each model tooth and the corresponding part of the archwire becomes shorter along the inside of the model tooth of the setup tooth model. And then molded.
The arm is fixed to the orthodontic wire that is bent and shaped in this way, and the orthodontic wire is positioned and fixed to a predetermined portion of the model tooth of the set-up dental model.
Then, an orthodontic bracket is attached to the orthodontic wire that is bent in a complicated manner, and a resin for joining the bracket to the model tooth is injected between the bracket and each model tooth to form a joint portion of the bracket. To do. At this time, the orthodontic wire that is bent in a complicated manner is formed with a thin joint so that the relative distance between each model tooth and each corresponding portion of the arch wire is shortened. Through such a process, an orthodontic wire forming apparatus for forming an orthodontic wire used for orthodontics is manufactured.
Next, remove the bracket integrated with the joint that copied the outline of each model tooth, attach the bracket to each tooth in the patient's oral cavity, and fasten each bracket and the orthodontic wire in the initial process In accordance with the degree of correction of the dentition, the thickness of the orthodontic wire is gradually increased so that the dentition is corrected.

Japanese Patent No. 3118213

  However, in any of the orthodontic wires described above, when the bracket is joined to each model tooth because the arm for positioning and fixing the wire protrudes from the outer shape of each model tooth of the setup tooth model In addition, the outer shape of each model tooth cannot be accurately copied to the joint part of the bracket formed by injecting the resin and joining the bracket and each model tooth, and then the joint part on each tooth in the patient's mouth There was a problem that the bracket could not be installed in the optimal position when mounting the bracket. Furthermore, since the orthodontic wire and each arm are fixed, there is a problem that the bracket tube of the type through which the orthodontic wire is inserted cannot be used because each arm becomes an obstacle.

  In addition, since the orthodontic wire described above has a complicatedly bent outer shape, it takes time for a medical worker to produce the outer shape, and skill in bending the wire is required.

  Therefore, in the present invention, when the orthodontic wire is positioned and fixed to each tooth of the setup dental model, the external shape of each tooth can be accurately copied to the bracket, and various types of brackets are used for the orthodontic wire. An object of the present invention is to provide a method for manufacturing an orthodontic wire forming apparatus and an orthodontic wire that can be manufactured in a desired shape in a short time and does not require skill in wire bending.

In order to achieve the above object, a method for manufacturing an orthodontic wire forming apparatus according to claim 1 is a method for manufacturing an orthodontic wire forming apparatus for forming an orthodontic wire used for orthodontic treatment. A dental impression collecting process for collecting a dental impression of a patient, an original dental model producing process for producing an original dental mold by pouring hard plaster into the collected dental impression, and a plurality of models of the original dental mold A set-up tooth model manufacturing process for preparing a set-up tooth model by dividing the teeth individually and rearranging each model tooth into a pseudo-gingiva so as to obtain a target tooth arrangement after orthodontics, and the set-up tooth in the pseudo-gingival type model, a pedestal manufacturing process of forming such a plurality of pedestals which enables placed to position the wire for use in orthodontic located inside of each tooth model, said platform Brackets and wire fastening steps for fastening orthodontic brackets corresponding to the respective model teeth to the wires to be placed on, and filling the resin between the respective model teeth and the respective brackets to each of the models A step of forming a joint by extending the resin from the side surface of each model tooth to the cutting edge or the top of the cusp while fixing each bracket to the tooth .

  The invention according to claim 2 is the manufacturing method of the orthodontic wire forming device according to claim 1, wherein, in the pedestal manufacturing step, the seat portion is located at a position on the pseudo gingiva that is inside the model tooth. An approximately triangular ring serving as the basis of the ring is disposed, an uncured resin is formed on the top of the ring tip protruding from the pseudo gingiva to form an uncured seat, and the wire is disposed on the uncured seat. A base having a seat part in which a concave part corresponding to the outer shape of the wire is formed after curing by irradiating ultraviolet rays in a state in which is placed.

  The invention according to claim 3 is the manufacturing method of the orthodontic wire forming apparatus according to claim 1, wherein in the pedestal manufacturing step, a hole is formed at a position on the pseudo gingiva that forms the inside of the model tooth, A resin is directly injected into the hole and placed to form an uncured seat portion, and the wire is placed on the uncured seat portion and irradiated with ultraviolet rays. After curing, there is a recess corresponding to the outer shape of the wire. A pedestal having a formed seat portion is formed.

  Invention of Claim 4 is an orthodontic wire formed using the orthodontic wire formation apparatus produced with the manufacturing method of any one of Claim 1 to 3, Comprising: From the tooth to the side incisor or from the middle incisor to the canine, the curved portion curved along the inner surface of the model dentition of the setup tooth model, and at least from the side incisor to the second premolar A bent part formed by bending between adjacent model teeth of each corresponding model tooth of the set-up tooth model, and a straight part linearly formed from the bent part to a position corresponding to the last molar tooth of the set-up tooth model; It is characterized by comprising.

  The invention according to claim 5 is the orthodontic wire according to claim 4, further comprising an orthodontic bracket corresponding to each model tooth, and each bracket is provided between the model tooth and the bracket. The formed joints are formed, and the thicknesses of the joints are varied according to the gap with the model tooth.

  According to the manufacturing method of the orthodontic wire forming apparatus according to the present invention, when the orthodontic wire is positioned and fixed to each model tooth of the setup tooth model, a resin is injected to join the bracket and each model tooth. Because the external shape of each model tooth can be accurately copied to the joint of the formed bracket, the orthodontic bracket can be attached to each patient's teeth in the correct position and various types of orthodontic wires The orthodontic bracket can be used.

It is a perspective view which shows the process of the manufacturing method of the orthodontic wire formation apparatus of embodiment which concerns on this invention. It is a principal part enlarged view which shows the process of the manufacturing method of the orthodontic wire formation apparatus of embodiment which concerns on this invention. It is a top view which shows the process of the manufacturing method of the orthodontic wire formation apparatus of embodiment which concerns on this invention. It is a top view which shows the process of the manufacturing method of the orthodontic wire formation apparatus of embodiment which concerns on this invention. It is a perspective view which shows the process of the manufacturing method of the orthodontic wire formation apparatus of embodiment which concerns on this invention. It is a perspective view which shows the various shapes of an orthodontic wire. It is process drawing which shows the manufacturing method of the conventional orthodontic wire formation apparatus.

  The manufacturing method of the orthodontic wire forming apparatus for forming the orthodontic wire used for the orthodontic according to the present invention includes a dental mold impression collecting step for collecting a dental impression of a patient, and a collected dental mold impression. Each model so that it becomes the target tooth arrangement after orthodontic division by dividing the plurality of model teeth of the original dental model individually into the original dental model manufacturing process that pours the plaster and creates the original dental model And a setup tooth model preparation process for preparing a setup tooth model by rearranging teeth in a pseudo gingiva, and the feature of the present invention is used for orthodontics on the pseudo gum of the setup tooth model. And a pedestal production step of forming a plurality of pedestals that can be positioned and placed so as to be positioned inside each model tooth.

  It is no longer necessary to install an orthodontic wire on the setup tooth model via the arm structure as in the past, and when the orthodontic wire is positioned and fixed to each tooth of the setup tooth model, a resin is injected to the bracket. It is possible to accurately copy the external shape of each model tooth to the joint portion of the bracket formed by joining each model tooth.

  And since the bracket integral with such a joint is formed, the orthodontic bracket can be attached to the correct position corresponding to each tooth of the patient. In addition, since the orthodontic wire does not have an arm, various types of orthodontic brackets and orthodontic bracket tubes can be used for the orthodontic wire.

  In the pedestal manufacturing process, a substantially triangular ring serving as the foundation of the seat is disposed at a position on the pseudo gingiva that is inside the model tooth, and is not formed on the top of the ring tip protruding from the pseudo gingiva. A seat portion in which a cured resin is placed to form an uncured seat portion, irradiated with ultraviolet rays in a state where the wire is placed on the uncured seat portion, and a recess corresponding to the outer shape of the wire is formed after curing. Is formed.

  In this way, a pedestal for fixing the orthodontic wire can be easily formed.

  Further, in the other pedestal manufacturing process, a hole is formed at a position inside the model tooth on the pseudo gingiva, and a resin is directly injected into the hole to form an uncured seat portion. You may make it form a base which has a seat part in which a concave part corresponding to the outline of the wire was formed after hardening by irradiating with ultraviolet rays in the state where the wire was placed in the seat part.

  An orthodontic wire forming apparatus is an apparatus for forming an orthodontic wire used for orthodontic treatment, and an orthodontic wire is formed using this orthodontic wire forming apparatus.

  The orthodontic wire includes a curved portion that is curved along the inner surface of the model tooth row of the set-up tooth model corresponding to the central incisor to the side incisor or from the central incisor to the canine, and at least the side incisor. To the second premolar, a bent part formed by bending between adjacent model teeth of each model tooth of the setup tooth model, and a straight line from the bent part to a position corresponding to the last molar of the setup tooth model A straight line portion.

  In addition, the orthodontic wire includes an orthodontic bracket corresponding to each model tooth, and each bracket forms a joint formed between the model tooth and the bracket. The thickness varies according to the gap with the model tooth.

  This orthodontic wire is a straight part that is straight from the bent part to the position corresponding to the last molar of the set-up model, thereby fixing the orthodontic bracket to each tooth in the patient's mouth, Furthermore, after the orthodontic wire is attached to the bracket, the sliding mechanics for sliding the wire with respect to the bracket can function efficiently.

  Further, the wire bending operation can be completed in a short time by providing a clear turning point in the shape of the left and right wires and one bending portion. It can be made into the shape which can grasp | ascertain right-left symmetry easily. It is possible to easily perform arch coordination in which adjustment is performed by superimposing the upper orthodontic wire formed for the upper jaw and the lower orthodontic wire formed for the lower jaw.

  Furthermore, the shape of the orthodontic wire can be adjusted only by performing a first order bend for forming a bent portion. There is an effect that does not require a skill level for performing complicated wire bending such as second order bending (vertical wire bending) and third order bending (bending to obtain torsion or torque application) performed by a conventional wire.

  Hereinafter, an embodiment of an orthodontic wire forming apparatus manufacturing method and an orthodontic wire according to the present invention will be described with reference to the drawings. Each model tooth T1,..., T7 in the setup tooth model M in the figure corresponds to each tooth of the patient. In the following description, the model tooth T1 is a medium incisor, the model tooth T2 is a side incisor, Model tooth T3 is canine, model tooth T4 (not shown) is the first premolar, model tooth T5 is the second premolar, model tooth T6 is the first molar, model tooth T7 is the second molar, and model tooth T8 is Sometimes called third molar. In this example, an orthodontic tooth model that is performed by extracting the first premolars T4 and T4 and the third premolars T8 and T8 will be described as an example.

  In the method of manufacturing an orthodontic wire forming apparatus for forming an orthodontic wire used for orthodontic treatment, a dental impression taking process, an original dental model preparation process, a setup dental model preparation process, an orthodontic wire formation Each process such as a process, a bracket / wire adjustment process, a pedestal manufacturing process, a bracket / wire fastening process, and a joint manufacturing process is performed.

[Dental impression collection process]
In performing orthodontic correction on the upper jaw side of a patient (not shown), for example, a dental impression after extracting two first premolar teeth T4 and T4 is collected.

[Original tooth model production process]
Pour plaster into the collected dental impression and make an original dental model.

[Setup tooth model production process]
A plurality of model teeth of the original tooth model are individually divided, and a set-up tooth model M is prepared in which each model tooth is rearranged in a pseudo gingiva so as to have a target tooth arrangement after orthodontics. As shown in FIG. 1 (a), the set-up tooth model M has a configuration in which a pseudo gingiva G is formed of a wax material and the model teeth T1,.

[Orthodontic wire forming process]
In the set-up tooth model M, an orthodontic arch-shaped wire is placed between the side incisor T2 and the canine T3 in accordance with the inner surface of the model teeth T1,. Are bent to form the bent portions 12 and 12, respectively, and the orthodontic wire 10 is produced. The orthodontic wire 10 includes a curved portion 11 that is curved along the inner surface of the model tooth row of the setup tooth model M corresponding to the middle incisor T1 to the side incisor T2, and at least the side incisor T2. Bending portions 12 and 12 formed by bending between adjacent side incisors T2 of the set teeth D2,..., T5 corresponding to the second premolar tooth T5 between the canine T3 model teeth, and each bending And a straight portion 13 linearly extending from the canine T3 to a position corresponding to the last second molar T7 with the portion 12 as a boundary. The orthodontic wire 10 is also referred to as a tripezoid wire.

[Bracket and wire adjustment process]
Each orthodontic bracket B1,..., B7 corresponding to each model tooth T1,..., T7 is temporarily fastened (temporarily ligated) using rubber bands to the orthodontic wire 10, and each tooth T1 on the inner side. After confirming the relative distance between T7 and brackets B1,..., B7, the angles of the bent portions 12, 12 of the orthodontic wire 10 are accurately determined. Then, the brackets B1,..., B7 are removed from the orthodontic wire 10 once.

[Pedestal production process]
As shown in FIGS. 1 to 3, a plurality of pedestals 20 on which an orthodontic wire 10 for use in orthodontic positioning can be positioned and placed on the pseudo gingiva G of the setup dental model M,. , 20 are formed so as to be located inside the respective model teeth T1,.

  That is, the pedestal manufacturing process will be described more specifically.

As shown in FIGS. 1 (a) and 3 (a), a substantially triangular ring 22 serving as the basis of the seat portion 21 is formed at a position on the pseudo gingival G that is located inside the model teeth T1,. Arrange. That is, the substantially triangular ring 22 has a top portion 22T whose tip is bent at an acute angle, and a bent portion 22U that is bent so that the base portion faces each other.
Moreover, the ring 22 has a state in which the bent portion 22U is buried in the pseudogingival G inside the model tooth and the top portion 22T protrudes from the pseudogingival G inside the model tooth. As described above, the ring 22 is not removed from the pseudo gingival G by burying the bent portion 22U in the pseudo gingival G, and the ring itself does not rotate.

  As shown in FIG. 1B, an uncured resin is placed on the top 22T at the tip of each ring 22 protruding from the pseudogingival G so as to have a predetermined height, thereby forming an uncured seat 21A. At this time, the resin enters the inner space of the top portion 22T, and when this portion is hardened, the ring 22 and the seat portion 21 are firmly coupled to prevent removal and rotation.

As shown in FIG.1 (c) and FIG.3 (b), the orthodontic wire 10 is mounted in the unhardened seat part 21A.
Of the plurality of uncured seat portions 21A,..., 21A, the uncured seat portion 21A at the tip is provided between the left and right central incisors T1, T1 and on the inner pseudogingival G. A concave portion 21C (see FIG. 2) is formed in the uncured seat portion 21A at the distal end to surround the peripheral surface of the orthodontic wire 10 except for its upper surface.
An intermediate seat portion 21A is provided between the second premolar tooth T5 and the first premolar tooth T6 and on the inner pseudogingiva G. The intermediate seat portion 21A forms a concave portion 21C that surrounds the peripheral surface of the orthodontic wire 10 except for its upper surface.
Furthermore, each seat 21A at the end is provided on the throat part side of the left and right second molar teeth T7, T7 (so-called throat part side in the oral cavity of the patient) and on the inner pseudogingiva G. Each end seat portion 21A forms an end recess 21D (see FIG. 2) that allows the end of the orthodontic wire 10 to be engageable.

That is, the concave portion 21 </ b> C includes surfaces that contact the front and rear surfaces and the lower surface of the orthodontic wire 10 and the midway portion thereof, and the surfaces of the front end portion and the midway portion of the orthodontic wire 10 on these surfaces. The right and left movements of the orthodontic wire 10 can be restricted by the contact.
Each of the terminal recesses 21D includes surfaces that contact the front and rear surfaces, the lower surface, and the end surface of the terminal portion of the orthodontic wire 10, and each surface of the terminal portion of the orthodontic wire 10 is provided on these surfaces. By abutting, the front-rear and left-right movements of the orthodontic wire 10 can be restricted. The front and rear of the orthodontic wire 10 are the axial direction, and the left and right are orthogonal to the axial direction and the horizontal direction.

With the orthodontic wire 10 attached to the uncured seat portion 21A, it is cured by irradiation with ultraviolet rays. The hardened seat portion 21 is formed with a concave portion 21C or a terminal concave portion 21D that is detachably engaged with the orthodontic wire 10 while corresponding to the outer shape of the orthodontic wire 10. In this way, the pedestal is located between the left and right central incisors T1 and T1, the second premolar tooth T5 and the first molar T6, and the second molars T7 and T7 on the throat side of the pseudogingiva G inside the model tooth. 20,... 20 are formed.
Further, when the orthodontic wire 10 is placed, these pedestals 20 are placed on a virtual substantially horizontal plane formed at a height H where the orthodontic wire 10 is lowered from the incision edge of the model tooth or the top of the cusp. The mounted mode can be maintained.

[Bracket and wire fastening process]
As shown in FIG. 4A, orthodontic brackets B1,..., B7 corresponding to the model teeth T1,.

[Joint preparation process]
Then, as shown in FIGS. 4B and 5A, the resin is filled between the inner side surfaces of the model teeth T1,..., T7 and the orthodontic brackets B1,. Then, the resin is extended from the side surface of each model tooth T1,..., T7 to the cutting edge or the top of the cusp to form joints 23,. When the joint portions 23,... 23 are cured, they become the outer shapes of the model teeth T1,. That is, the joint 23 of the middle incisor T1 and the side incisor T2 among the joints 23,... Further, the joint 23 of the canine tooth T3 and each molar tooth T5, T6, T7 is configured to cover the occlusal surface. It should be noted that the thicknesses of the joint portions 23 that are filled with resin and hardened according to the gaps between the inner side surfaces of the model teeth T3,..., T7 and the orthodontic brackets B3,. It is configured.

  The orthodontic wire forming apparatus 1 is manufactured through the above-described steps.

The brackets B1,..., B7 having the joints are removed from the model teeth T1,..., T7 of the setup tooth model M, and the orthodontic wires are inserted from the seat portion 21 of the base 20 of the setup tooth model M. 10 is removed. Since the orthodontic wire 10 is not connected to a conventional mounting arm, even the bracket tube can be removed. The orthodontic wire 10 is used in a stepwise manner from a thin wire to a thick wire from the initial stage to the final course of the orthodontic treatment. The orthodontic wire 10 is also used for copying the shape of the orthodontic wire used in stages. It will be.
The orthodontic wire 10 can also be used in the patient's oral cavity in the final orthodontic process. That is, if there is only a setup tooth model M that has completed the above-described pedestal manufacturing process, the orthodontic wire can be re-manufactured.

  As shown in FIG. 5B, brackets B1,..., B7 integral with the joint are bonded to the teeth 30,. At this time, each tooth 30 of the patient is directed in a different direction from each tooth of the setup tooth model M.

  However, the brackets B1,..., B7 with joints have outer shapes for each tooth 30,. Here, a part of the unnecessary joints protruding from the left and right from the brackets B1,..., B7 is deleted. In this way, attachment of the brackets B1,..., B7 to each tooth in the patient's oral cavity is completed.

  The orthodontic wire 10 formed by using the orthodontic wire forming apparatus described above is performed using a conventional arch wire because only the first bend for forming the bent portions 12 and 12 is performed to complete the shape forming. There is no need for second bend or third bend, and there is an effect that molding can be performed regardless of technical maturity.

  In addition, although the substantially triangular ring 22 was used for the base of the base 20 mentioned above, a rod-shaped thing and a rectangular board may be sufficient. The rectangular plate may be provided with holes in the vicinity of the upper and lower ends in the longitudinal direction. In the setup tooth model M, when the lower part of the plate is buried in the pseudogingival G, the wax material of the pseudogingival G enters into one hole and is firmly fixed. When a resin serving as a seat is placed on top of the plate, the resin enters the other hole, and when the resin is cured, the seat and the plate are firmly bonded.

  It should be noted that, when an orthodontic dental model with the first premolars T4 and T4 and the third molars T8 and T8 is left in accordance with the dentition of a patient, Accordingly, the manufacturing method of the orthodontic wire forming apparatus and the orthodontic wire are appropriately changed. For example, in the case of a dental model that leaves the first premolar teeth T4, T4, the bent portion 12 of the orthodontic wire 10 is placed between the canine tooth T3 and the first premolar tooth T4 or between the first premolar tooth T4 and the second premolar tooth. It will be provided between T5. Further, in the case of a tooth model in which the third molars T8 and T8 are left, the third molars T8 and T8 are the last molars. That is, it can be appropriately changed according to the arrangement of each tooth of the patient.

Each sectional shape of the orthodontic wire will be described with reference to FIG.
The cross-sectional shape of the orthodontic wire 10 shown in FIG. 6A is formed in a square shape in cross-section. The cross-sectional shape of the orthodontic wire 40 shown in FIG. 6B is formed in a rectangular shape in cross-sectional view. The cross-sectional shape of the orthodontic wire 50 shown in FIG. 6C is formed in a circular shape in cross-sectional view.

  Even with the orthodontic wires 10, 40, and 50 having such a cross-sectional shape, the orthodontic wire can be completely formed only by forming the bent portions 12 and 12 that have been subjected to the first bend. .

[Other pedestal manufacturing process]
Further, as another pedestal manufacturing process, a hole is formed at the position inside the model tooth on the pseudo-gingival G, and a resin is directly injected into the hole to form an uncured seat portion 21A. The seat portion 21 in which a concave portion corresponding to the outer shape of the orthodontic wire 10 is formed after curing may be formed by irradiating ultraviolet rays with the orthodontic wire 10 placed on the portion 21A. In this case, a pedestal can be produced without using a ring as a foundation.

  According to the above embodiments, the following method for manufacturing an orthodontic wire forming apparatus and orthodontic wires are realized.

  That is, a manufacturing method of an orthodontic wire forming apparatus for forming an orthodontic wire used for orthodontic treatment, which includes a dental mold impression collecting step for collecting a dental mold impression of a patient, and the collected dental mold impression An original dental model manufacturing process for producing an original dental model by pouring hard plaster, and a plurality of model teeth T1,..., T7 of the original dental model are individually divided to be targets after orthodontics A set-up dentition model preparation process for preparing a set-up dentition model M in which each model tooth is re-arranged in the pseudo-gingival G so as to align the teeth, and the orthodontic treatment on the quasi-gingival G of the set-up dentition model M Forming a plurality of pedestals 20,... 20 on which a wire (for example, orthodontic wire 10) can be positioned and placed so as to be located inside (back side) of each model tooth; , A.

  Further, in the pedestal manufacturing process, a substantially triangular ring 22 serving as a base of the seat portion 21 is disposed on the pseudo gingiva G at a position inside the model teeth T1,..., T7 and protrudes from the pseudo gingival G. An uncured resin is placed on the top 22T of the ring tip to form an uncured seat portion 21A, and ultraviolet rays are irradiated while a wire (for example, an orthodontic wire 10) is placed on the uncured seat portion 21A. And the base 20 which has the seat part 21 in which the recessed part 21C corresponding to the external shape of a wire was formed after hardening is formed.

  Further, in another pedestal manufacturing process, a hole is made at a position on the inside of the model teeth T1,..., T7 on the pseudo gingiva G, and resin is directly injected into the hole to form an uncured seat portion 21A. Then, ultraviolet rays are irradiated in a state where a wire (for example, orthodontic wire 10) is placed on the uncured seat portion 21A to form a pedestal having a seat portion having a recess portion 21C corresponding to the outer shape of the wire after curing. To do.

  According to the manufacturing method of the orthodontic wire forming apparatus, when the orthodontic wire is positioned and fixed to each tooth of the setup dental model, the external shape of each model tooth can be accurately copied to the joint portion of the bracket. In addition, it is possible to attach the bracket to each tooth of the patient in an accurate position and to use various types of brackets for the orthodontic wire.

  Furthermore, by providing a seat portion for placing and fixing the orthodontic wire on the pseudo gingiva on the lingual side of the tooth, a joint portion (indirect bond core) that makes maximum use of the tooth form can be produced. The orthodontic wire is simpler than the method of fixing the orthodontic wire to the set-up model with an arm, and there is an effect that the orthodontic wire is not displaced and hardly deformed or broken. Since the orthodontic wire is placed and fixed on the seat, there is no deviation in the front, back, left, right, and up and down of the setup tooth model. By creating a seat, a virtual horizontal plane on which the orthodontic wires are placed can be accurately set at a predetermined height below the incision edge of the teeth or the top of the cusp. Can be reduced.

  Moreover, there is an effect that the orthodontic wire forming apparatus can be easily stored and managed. This orthodontic wire can be used as the final wire during orthodontic treatment of the patient. In the setup tooth model, the orthodontic wire is placed and fixed on the seat provided between each tooth, so it is not necessary to maintain the tooth as in the conventional wire fixing structure. It is possible to respond flexibly to changes in Since the orthodontic wire does not have a conventional arm, the orthodontic bracket can be detached and the bracket tube (insertion type bracket) can be detached.

  Furthermore, since there is no conventional arm structure in orthodontic wires, arch coordination is performed by superimposing the upper orthodontic wires formed for the upper jaw and the lower orthodontic wires formed for the lower jaw. Can be easily performed.

  An orthodontic wire (for example, a substantially trapezoidal orthodontic wire 10) formed by using the manufacturing method of the orthodontic wire forming apparatus 1 is from the central incisor T1 to the side incisor T2 or the medium incisor. Curved portion 11 curved along the inner surface of the model dentition of setup tooth model M corresponding to T1 to canine T3, and setup tooth model corresponding to at least side incisor T2 to second premolar T5 Bending portions 12 and 12 formed by bending between adjacent model teeth of each model tooth of M, and a linear portion 13 linearly formed from the bending portion 12 to a position corresponding to the last molar tooth of the setup tooth model M. It has.

  Further, the orthodontic wire 10 includes orthodontic brackets corresponding to the respective model teeth, and each bracket is formed with a joint portion 23 formed between the model tooth and the bracket. The portions 23 have different thicknesses according to the gap with the model teeth.

  This orthodontic wire is a straight part that is straight from the bent part to the last molar, so that the orthodontic bracket is fixed to each tooth of the patient and the orthodontic wire is attached to the bracket. The sliding mechanics can function efficiently.

  Further, the wire bending work is completed by providing only one bent portion that has a clear turning point at the left and right wire shapes. It can be set as the shape which can grasp | ascertain the left-right symmetry of a wire easily. It is possible to easily perform arch coordination in which the upper jaw wire formed for the upper jaw and the lower jaw wire formed for the lower jaw are overlapped and adjusted.

  Furthermore, the shape of the orthodontic wire can be adjusted only by performing a first order bend for forming a bent portion. There is no need to perform second order bend (vertical wire bending) or third order bend (bending to obtain torsion or torque application) which is performed with a conventional wire.

  Although the present invention has been described through the embodiment, the present invention is not limited to the embodiment, and the layout of the shape of each component is appropriately changed without departing from the gist of the claims. can do.

G pseudo gingiva M set-up tooth model 1 orthodontic wire forming apparatus 10 orthodontic wire 11 bending portion 12 bending portion 13 straight portion 20 pedestal 21 seat portion 22 ring 23 joint portion 30 teeth

Claims (5)

A method for manufacturing an orthodontic wire forming apparatus for forming an orthodontic wire used for orthodontic treatment,
Tooth shape impression collection process for collecting the patient's tooth shape impression,
An original dental model making process in which hard plaster is poured into the collected dental impression and an original dental model is made,
A set-up tooth for preparing a set-up tooth model in which a plurality of model teeth of the original tooth model are individually divided and the model teeth are rearranged in a pseudo gingiva so as to be a target tooth arrangement after orthodontic treatment Mold making process,
On the pseudo gingiva of the set-up tooth model, a pedestal manufacturing step for forming a plurality of pedestals that can be positioned and placed for orthodontic use so as to be positioned inside each model tooth; and
A bracket and a wire fastening step for fastening an orthodontic bracket corresponding to each model tooth to the wire to be placed on the pedestal;
The resin is filled between each model tooth and each bracket, and the resin is extended from the side surface of each model tooth to the incision or the top of the cusp while being fixed to each model tooth. A bonding part forming step for forming a part;
A method for manufacturing an orthodontic wire forming apparatus, comprising: In the pedestal preparation step, a substantially triangular ring serving as a base of the seat portion is disposed at a position on the pseudo gingiva inside the model tooth, and is not formed on the top of the ring tip protruding from the pseudo gingiva. A seat in which a cured resin is placed to form an uncured seat, and ultraviolet rays are irradiated with the wire placed on the uncured seat, and a recess corresponding to the outer shape of the wire is formed after curing. The manufacturing method of the orthodontic wire forming apparatus according to claim 1, wherein a pedestal having a portion is formed. In the pedestal manufacturing step, a hole is formed at a position inside the model tooth on the pseudo gingiva, and a resin is directly injected into the hole to form an uncured seat, and the uncured seat is The orthodontic wire according to claim 1, wherein an orthodontic wire having a seat portion in which a concave portion corresponding to an outer shape of the wire is formed after being cured by irradiating ultraviolet rays in a state where the wire is placed. Manufacturing method of forming apparatus. An orthodontic wire formed using the orthodontic wire forming apparatus produced by the manufacturing method according to any one of claims 1 to 3,
A curved portion curved along the inner surface of the model dentition of the set-up tooth model corresponding to the central incisor to the side incisor or the central incisor to the canine;
A bent portion that bends between adjacent model teeth of each of the model teeth of the set-up tooth model corresponding to at least side incisors to second premolars;
An orthodontic wire, comprising: a straight portion linearly extending from the bent portion to a position corresponding to the last molar tooth of the setup dental model. An orthodontic bracket corresponding to each model tooth is provided, and each bracket is formed with a joint portion formed between the model tooth and the bracket, and the joint portion is connected to the model tooth. The orthodontic wire according to claim 4, wherein the thickness varies according to the gap.

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