JPH11221235A - Bracket positioning cap and bracket attaching method of dental corrective tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bracket positioning cap of dental corrective tool which can be attached at a correct position even if the bracket is removed. SOLUTION: A resin made core 4 independently formed for each tooth 6 is provided with a negative mold 41 covering a cut edge 63 of the tooth 6 of an patient, and the core is connected to a cap 3 which has a fitting dent part 33 detachably attached to a bite plane 18 of a bracket 1. As the cap 3 is detachably attached to the bracket 1, the core 1 is detachably attached to the bracket 1 via the cap 3. The core 4 can be attached/detached with the bracket 1 without breakage, so if the bracket 1 adhered is removed, the used core 4 and the cap 3 are attached to the bracket 1 and the bracket 1 can be positioned against the tooth 6 of the patient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for positioning a bracket of an orthodontic appliance used for correcting a patient's teeth, and a bracket mounting method using the cap.

[0002]

2. Description of the Related Art In mounting an orthodontic appliance, a bracket of the orthodontic appliance is adhered to a lingual surface of a patient's teeth. The tooth lingual surface has a more complicated shape than the lip surface, and it is difficult to position the bracket ideally by visual inspection.Therefore, when bonding the bracket to the tooth lingual surface, use the TARG (Torque Angulation Reference Reference).
Guide) or CLASS (Custom Lingual Appliance)
A bracket mounting core (indirect tray) formed using the Setup System) is used.

[0003] An indirect tray is formed as follows. First, the bracket is positioned with respect to the patient's tooth model, and this tooth model together with the bracket is covered with an elastic member such as silicon. If the silicon is removed from the tooth model, a negative model of the tooth model is formed on the silicon, and
An indirect tray with the bracket embedded is formed. After dividing the indirect tray over all teeth into 3 to 6 teeth, attach adhesive to the bracket embedded in the indirect tray and cover the indirect tray on the patient's teeth. The bracket is glued in the same ideal position as set on the model. After the adhesive has cured, remove the indirect tray to complete the bracket installation.

[0004] In TARG, the creation of this indirect tray is all done on an original tooth model that reproduces the patient's teeth arrangement as it is.

On the other hand, the CLASS uses a setup tooth model in which the alignment of the patient's teeth is rearranged to a target state. In this method, the bracket is positioned with respect to the setup tooth profile model, and the gap between the base surface of the bracket and the model tooth is filled with an adhesive (advanced adhesive) (bracket advance). Thereafter, the bracket is transferred to the original tooth model, and an indirect tray is formed on the original tooth model. As described above, by using the setup tooth profile model, the bracket can be positioned more accurately than the TARG.

[0006] However, the conventional bracket mounting method using an indirect tray has the following problems. First, in both of the TARG and the CLASS, conventionally, the indirect tray extends over 3 to 6 teeth and is elastic and easily deformed. For this reason, the position of the bracket is displaced when it is attached to the patient's teeth, and a large amount of adhesive is required to allow distortion, so that overflow of the adhesive occurs and the position of the indirect tray due to the weight of the indirect tray is increased. There is a problem that it is necessary to support the tray until the adhesive is cured in order to prevent the displacement. Further, since the conventional indirect tray covers a plurality of teeth at once, the alignment of the patient's teeth is also involved. Therefore, if the patient's teeth move between the time when the tooth shape impression of the patient is obtained and the time when the bracket is bonded, there is a problem that the indirect tray cannot be used.

Further, in the method using CLASS, since both the setup tooth model and the original tooth model are required, a sub model is required to form the setup tooth model, or the setup tooth model is bracketed from the original tooth model. There is a problem that a complicated technical operation such as forming a notch on the tooth model is required to move.

[0008]

Therefore, the applicant of the present application has previously proposed in Japanese Patent Application No. 9-261228 a method of mounting a bracket capable of solving the above-mentioned problems. In this method, the bracket is attached using a resin-made individual core formed separately for each tooth, instead of the indirect tray extending over every three to six teeth. This individual core is made of resin with low elasticity, and extends the resin from the resin advanced portion laminated to the surface (adhesive surface) adhered to each tooth of the bracket to the cutting edge or occlusal surface of each tooth. , A resin core portion is formed. Therefore, after attaching the bracket to each tooth of the patient by attaching the advance portion with a small amount of adhesive and cutting and removing the core portion extended from the advance portion, the adhesive does not overflow and the patient does not overflow. The bracket can be accurately left at a predetermined position of each tooth.

[0009] Here, the applicant of the present application has filed Japanese Patent Application No. 9-261.
No. 228 proposes a method in which the above-mentioned bracket mounting method is improved. That is, in the above-described method, after the bracket is attached to the patient's teeth, the bracket and the core are cut off. Therefore, in the event that the bracket falls off from the teeth after this cutting, the bracket is visually measured on the teeth. There is a problem that positioning must be performed and positioning accuracy is reduced.

[0010] Therefore, an object of the present invention is to solve the above-mentioned problems, while taking advantage of the fact that a bracket is attached to each tooth, and even if the positioned bracket falls off from the tooth, the bracket must be re-mounted. An object of the present invention is to provide a bracket positioning cap for an orthodontic appliance that enables accurate positioning, and a bracket mounting method using the cap.

[0011]

In order to solve the above-mentioned problems, orthodontic brackets are adhered and fixed to each tooth of a patient, and orthodontic wires are hung over these brackets, and each tooth is fixed. When performing the correction, the bracket is detachably connected to a bracket holding portion capable of detachably holding the bracket, and a resin-made individual core for each tooth having a negative shape of a cutting edge or an occlusal surface of a patient's tooth. A bracket positioning cap having a connection portion and capable of positioning the bracket with respect to the individual core.

In this bracket positioning cap, the bracket holding portion is, for example, a fitting recess into which a projection formed on the back side of the bracket is fitted, and the fitting recess is fitted with the projection. At this time, it can be configured to be elastically deformed and to hold the fitted projection by the elastic return force.

In order to attach the bracket of the orthodontic appliance to the patient's teeth using the cap, first, the uncured resin is supplied to a portion corresponding to the incisal edge or occlusal surface of the teeth of the patient's tooth model. While the individual core is formed, the bracket is held at the bracket holding portion of the cap and the bracket is positioned at a predetermined position of the tooth of the tooth model in a state where the bracket is integrated with the cap. The individual core, the cap, and the bracket are integrated by connecting the individual core and the connection portion of the cap. Next, while the individual core, the cap and the bracket are integrated, the bracket is positioned at a predetermined position of the corresponding patient's tooth by placing the individual core on the corresponding patient's tooth. To a predetermined position. Thereafter, the individual core and the cap are integrally separated from the bracket by removing the bracket from the bracket holding portion of the cap, and the bracket is left at a predetermined position on the patient's teeth.

According to the present invention, an individual resin core having a negative mold for covering the incisal or occlusal surface of a patient's teeth and a cap detachable from a bracket are used on a patient's tooth model. The individual core and the cap are connected with the bracket positioned. Accordingly, when the individual core is put on the patient's teeth in a state where the individual core, the cap, and the bracket are integrated, the bracket is positioned at an accurate position set on the tooth model based on the individual core. Therefore, according to the present invention, it is possible to accurately position the bracket. Also, since the cap and bracket are removable, after bonding the bracket to the patient's teeth,
By separating the cap and the bracket, the individual core and the cap can be integrally removed from the bracket. Therefore, since only the brackets remain on the patient's teeth, the orthodontic wire can be bridged over each bracket to correct the teeth. Also, after removing the cap and the individual core from the bracket, even if the bracket falls off, if the bracket is reattached to the cap that is integrated with the individual core, the individual core can be covered only by putting the individual core on the teeth The bracket can again be accurately positioned on the patient's teeth as a reference. Therefore, the bracket can be bonded with high precision as in the case of the first bonding.

Further, the cap has only a portion connected to the bracket holding portion and the individual core, and there is no portion that is affected by individual differences among patients. Therefore, the cap is
Since they can be used in common, the same structure can be manufactured in advance, and only the individual cores need to be appropriately formed according to the patient's teeth.

In addition, since an individual core formed separately for each tooth can be used, there are the following advantages as compared with the case where a conventional indirect tray is used. First, since the individual core may be formed separately for each tooth using a resin having low elasticity, no distortion occurs when the individual core is attached to the patient's teeth. Therefore, the bracket can be accurately positioned on the patient's teeth. In addition, since no distortion occurs, the bonding surface of the bracket does not rise from the teeth. Therefore, since the adhesive can be securely adhered with a small amount of adhesive, the overflow of the adhesive does not occur, and the work of removing the excess adhesive becomes unnecessary. Furthermore, since it is formed separately for each tooth, it can be formed small and light, and does not need to be supported until the adhesive is hardened after being mounted on the patient's teeth. Furthermore, since it is independent of the patient's teeth alignment, even if the patient's teeth move during the period from the acquisition of the patient's tooth profile impression to the attachment of the bracket, the patient can be mounted. In addition, even when created using CLASS, there is no need to return the bracket from the setup tooth model to the original tooth model. Therefore, since the original tooth model is unnecessary, the sub model is unnecessary, and there is no need to transfer the bracket to the original tooth model. Therefore, complicated technical operations such as forming a notch on the tooth model can be omitted.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bracket positioning member and a bracket mounting method for an orthodontic appliance according to the present invention will be described with reference to the drawings.

(Bracket of Orthodontic Apparatus) Before describing the present invention, an orthodontic bracket to be attached to a patient's teeth using the present invention will be described.

FIG. 1A is a perspective view showing an example of a bracket of an orthodontic appliance attached to a patient's tooth using the present invention, and FIG. 1B is a perspective view showing the bracket shown in FIG. It is an outline side view showing signs that it was attached to a tooth. As shown in these figures, the bracket 1 of the orthodontic appliance is mounted on the lingual side surface 61 of the patient's teeth 6, and has a substantially rectangular plate-like base 11 bonded to the teeth 6, and a base 1.
1 has a projection 14 formed on the back surface 13 (the surface opposite to the surface 12 bonded to the teeth 6).

The protrusion 14 has a T-shaped hook 17 projecting from the rear surface 13 of the base 11 and extending toward the root of the tooth 6.
And a bite plane 18 having a substantially rectangular plate shape supported by a projection extending upward from the base of the hook 17.

In the bracket 1 thus formed, the gap opened between the hook 17 and the bite plane 18 toward the root of the tooth 6 is formed by the wire 7 of the orthodontic appliance.
Are passed through the slot 19. Also hook 1
A gap opened between the base 11 and the base 11 and the tooth 6 between the base 11 and the bite plane 18.
The tie wings 15 and 16 are respectively formed by gaps opened toward the front end of the tie wing. The wire 7 fitted into the slot 19 is ligated to the bracket 1 by a ligature (not shown) attached to the bracket 1 using a hook 17 and tie wings 15 and 16.

In order to mount the bracket 1 at an ideal position of the patient's teeth 6, the present invention positions and mounts the bracket 1 at a predetermined position of the patient's teeth 6 as follows.

(Bracket Mounting Method) FIG. 2 is a flowchart for explaining the bracket mounting method of the present invention. With reference to this figure, a method of attaching the bracket 1 to the patient's teeth 6 will be described.

First, in step ST1, a setup tooth profile model is created. This set-up tooth model is obtained, for example, by using an alginate impression agent and a ready-made toothed jaw impression tray to obtain a patient's tooth impression, and using this tooth impression to create an original tooth model with anhydrite. The original tooth model can be created by dividing the original tooth model and arranging the target teeth and arrangement.

Next, as shown in FIG. 3A, an individual core 4 made of resin is prepared using the set-up tooth model (step ST2). The individual core 4 is prepared by applying a calcium alginate-based gypsum separation liquid to each tooth 8 of the setup tooth model and applying an uncured room temperature polymerization resin to the surface of each tooth 8 of the setup tooth model using a brush or the like. It is formed by separately laminating each tooth. In this way, of the surfaces of the teeth 8 of the set-up tooth model, the incisal edges 83 of the teeth 8 from the lip side surface 82 (in the case of incisors or canines).
In the case of a molar, an occlusal surface) is straddled, and a thinly laminated individual core 4 is formed in a portion slightly over the lingual surface 81 of the tooth 8. Therefore, the individual core 4 has a negative mold 41 corresponding to the cutting edge 83 of the tooth 8. The individual core 4 is formed separately for each tooth, and does not cover adjacent teeth.

Next, the byte plane 18 of the bracket 1
Then, a bracket positioning cap (hereinafter, simply referred to as a cap) of the present invention is attached (step ST3).

Here, referring to FIGS. 4A and 4B,
The cap of the present invention will be described. As shown in FIG. 4A, the cap 3 is attached to the bite plane 18 of the bracket 1.
And an extension portion 32 (a connection portion with the individual core 4) extending from the base portion 31.

A fitting recess 33 (bracket holding portion) into which the bite plane 18 is fitted is formed in the base 31. The bite plane 18 is provided in the opening of the fitting recess 33.
A folded portion 34 (undercut) is formed so as to make the opening smaller than the diameter of the peripheral edge of. Therefore, when the bite plane 18 is pushed into the fitting concave portion 33 of the cap 3, the folded portion 34 is elastically deformed and the bite plane 18 is fitted into the fitting concave portion 33 as shown in FIG. It can be attached to the bracket 1. In this state, the folded portion 34 of the fitting concave portion 33 of the cap 3 holds the bite plane 18 fitted into the fitting concave portion 33 by its own elastic restoring force. It is in a fixed state so that it does not rattle and does not fall off even if it is not supported by hands. When a certain force is applied in the direction in which the cap 3 is pulled away from the bite plane 18, the folded part 34 of the cap 3 is elastically deformed, the bite plane 18 comes off from the fitting recess 33, and the cap 3 is removed from the bracket 1. It is. in this way,
The cap 3 is detachable from the bracket 1.

The extension 32 of the cap 3 extends obliquely from the base 31 so as to be tapered. This extension 3
The reference numeral 2 extends toward the individual core 4 as described later, so that the cap 3 and the individual core 4 can be easily connected to each other by using an adhesive. Further, the angle and length of the extending portion 32 are set for each type of each tooth 6 (a total of 28 teeth including 14 upper jaws and 14 lower jaws).

The thus formed cap 3 is shown in FIG.
After attaching to the bracket 1 as shown in FIG.
As shown in (B), the bracket 1 is accurately positioned with respect to each tooth 8 of the setup tooth profile model (step S).
T4). This positioning is performed, for example, by using an orthodontic rectangular wire (not shown) having an ideal arch formed in accordance with the set-up tooth model, and ligating the bracket 1 corresponding to each tooth to the rectangular wire. Done.

When the bracket 1 is positioned with respect to each tooth 8 of the setup tooth profile model in this manner, as shown in FIG.
Of the extended portion 32 is in a state of being close to the individual core 83.

Here, as shown in FIG. 3 (C), the gap between the extended portion 32 of the cap 3 and the individual core 4 is filled with the instant polymerization resin 5 and the cap 3 and the individual core 4 are connected. The cap 3, the individual core 4, and the bracket 1 are integrated. (Step ST5).

Next, as shown in FIG. 3 (D), the cap 3, the individual core 4, and the bracket 1 are removed from each tooth 8 of the setup tooth profile model while being integrated (step ST6).

Next, the bracket 1 is adhered to the teeth 6 of the patient. At this time, an adhesive is applied to the bonding surface 12 of the bracket 1 shown in FIG. 3 (D), and the cap 3, the individual core 4, and the bracket are attached as shown in FIGS. 5 (A) and 5 (B). The bracket 1 is adhered to the patient's teeth 6 by putting the individual cores 4 on the corresponding patient's teeth 6 while keeping the one integrated (step ST7). Here, the individual core 4 is a tooth 8 of a setup tooth model having the same shape as the patient's tooth 6.
Therefore, it is closely contacted with the patient's teeth 6 without gaps. Moreover, the cap 3 attached to the bracket 1 is connected to the individual core 4 after positioning the bracket 1 in an ideal state with respect to the teeth 8 of the setup tooth profile model. Thus, if the individual core 4 is placed over the patient's teeth 6, the bracket 1 attached to the cap 3 will be ideal for the patient's teeth 6, as set for the teeth 8 of the set-up model. Position.

Finally, after the adhesive is cured and the bracket 1 is adhered to the teeth 6 of the patient, the individual core 4 and the cap 3 are separated from the bracket 1 as shown in FIG. Is left on the patient's teeth 6 (step ST
8). Here, the one in which the individual core 4 and the cap 3 are integrated (hereinafter, referred to as the positioning member 2) is fixed to the bracket 1 simply by fitting the bite plane 18 into the fitting recess 33 of the cap 3. When the cap 3 is removed from the bite plane 18, the individual core 4 and the cap 3 can be removed from the bracket 1 and the patient's teeth 6 without breaking either the individual core 4 or the cap 3. Thus, the bonding of the bracket 1 is completed.

If the bracket 1 adhered to the patient's teeth 6 falls off during the treatment, the bracket 1 is adhered to the patient's teeth 6 by using the positioning member 2 used previously. That is, the individual core 4 and the cap 3 are detached from the bracket 1 without being broken while being integrated, and the cap 3 and the bracket 1 are detachable. Therefore, as shown in FIG. 3 (D), the positioning member 2 used previously is reattached to the bite plane 18 of the bracket 1 which has fallen off from the patient's teeth 6, and the individual core 4, the cap 3 and the bracket 1 are integrated. 5A in a state in which the adhesive is applied to the bonding surface 12 of the bracket 1, FIG.
As shown in (B), the bracket 1 is adhered while positioning the bracket 1 by placing the individual core 4 on the patient's teeth 6. Once the adhesive has cured, as shown in FIG.
The individual core 4 and the cap 3 may be integrally removed from the bracket 1 from the bracket 1 and only the bracket 1 may be left on the patient's teeth 6. By doing so, the bracket 1 can be bonded with the same high precision as when it was first bonded.

(Main effects of this embodiment) As described above, in this embodiment, the individual cores 4 are placed on the patient's teeth 6 so that the bracket 1 is positioned at a predetermined position with respect to the patient's teeth 6. When attaching the individual cores 4 to the bracket 1, the individual cores 4 are not directly attached to the bracket 1 but connected to the cap 3. The cap 3 has a fitting recess 33 for the bracket 1,
Therefore, the individual core 4 and the cap 3 can be integrally attached to and detached from the bracket 1. Therefore, when the individual core 4 and the cap 3 are removed from the bracket 1 after the bracket 1 is bonded to the patient's teeth 6, neither is broken,
It can be removed as it is. The positioning member 2 in which the individual core 4 and the cap 3 are integrated can be attached to the bracket 1 again by the fitting recess 33 of the cap 3. Thus, the individual core 4 and the cap 3
The integrated positioning member 2 can be attached to and detached from the bracket 1 any number of times without being broken. Therefore, since the positioning member 2 can be used repeatedly in the same patient, as described above, even if the bracket 1 adhered to the patient's teeth 6 falls off, the patient can use the positioning member 2 which has been used previously again. The bracket 1 can be positioned on the teeth 6 of the bracket. Therefore, the bracket 1 can be bonded with the same accuracy as when the first bonding is performed.

The cap 3 has a fitting recess 33 for the bracket 1 and an extended portion 32 connected to the individual core 4.
, There is no part greatly affected by individual differences among patients. That is, the angle and length of the extending portion 32 of the cap 3 are set for each type of each tooth 6 (a total of 28 upper and 14 lower jaws). The optimum angle and length slightly vary depending on the type of the teeth 6, but do not vary greatly from patient to patient.
Therefore, the cap 3 can be detachably attached to the general-purpose bracket 1, and 28 kinds of standard caps 3 having the extension portions 32 adapted to the respective teeth 6 can be mass-produced in advance.

For this reason, when attaching the bracket 1 to a patient, only the individual cores 4 may be appropriately formed in accordance with the teeth 6 of the patient. Therefore, it is possible to easily manufacture the positioning member 2 which can be attached to and detached from the bracket 1 and can be accurately attached to the patient's teeth.

Moreover, since the individual cores 4 formed separately for each tooth can be used by using a resin having low elasticity, there are the following advantages as compared with the case of using the conventional indirect tray. That is, since the individual core 4 is formed separately for each tooth using a resin having low elasticity, no distortion occurs when the individual core 4 is attached to the patient's teeth 6. Therefore, the bracket 1 can be accurately positioned on the teeth 6 of the patient. Further, since no distortion occurs, the bonding surface 12 of the bracket 1 does not rise from the teeth 6. Therefore, since the adhesive can be securely adhered with a small amount of adhesive, the overflow of the adhesive does not occur, and the work of removing the excess adhesive becomes unnecessary. Furthermore, since it is formed separately for each tooth and can be formed small and light, the bracket 1 does not shift even if it is not supported until the adhesive is hardened after being mounted on the patient's teeth 6.

Further, the individual core 4 is formed separately for each tooth and has no relation to the alignment of the teeth of the patient. Therefore, the teeth 6 of the patient are acquired between the time when the tooth impression of the patient is obtained and the time when the bracket 1 is attached. It can be mounted even if it moves. Furthermore, since it has nothing to do with the alignment of teeth, it is not necessary to return the bracket 1 from the set-up tooth model to the original tooth model, even if it is created using CLASS. Therefore, since an original tooth model is unnecessary, it is not necessary to create a sub model, and since there is no need to transfer the bracket 1 to the original tooth model, complicated technical operations such as forming a notch on the tooth model can be omitted.

(Other Embodiments) The individual cores 4
(Step ST2), mounting of the cap 3 (Step ST3), and positioning of the bracket 1 (Step ST4) are not limited to this order. For example, a cap may be attached to the bracket 1 after the bracket 1 is positioned with respect to the teeth 8 of the setup tooth model. After the positioning of the bracket 1, the individual core 4
May be created. After the positioning of the bracket 1, the gap between the bracket 1 and the teeth 8 is filled with a resin or an adhesive (advanced adhesive), and the bonding surface 12 of the bracket 1 is formed in a state along the unique shape of the teeth 8. The bracket 1 may be advanced.

Although the above embodiment is an example applied to CLASS, the present invention is also applicable to TARG. Further, another resin may be used in place of the room temperature polymerization resin to form the individual core 4. Further, although the individual core 4 and the cap 3 are connected by the instant polymerization resin 5, they may be connected by another method. For example, the individual core 4 itself may be extended and connected to the cap 3 without using the instant polymerization resin 5.

In the above embodiment, the cap 3 is provided with the fitting recess 33 as a bracket holding portion for holding the bite plane 18 of the bracket 1.
Not limited to

Further, the bracket holding portion formed on the cap 3 does not always hold the bite plane 18.
It suffices if the projection 14 formed on the back surface 13 of the bracket 1 can be held. For example, the present invention can be applied to a bracket on which the bite plane 18 is not formed. That is, with reference to FIGS. 1A and 1B, the bite plane 18 is intended to prevent the lower front teeth from interfering with the bracket 1 and to damage the bracket 1 for a patient who is deeply engaged. The bite plane 1 is provided for receiving and making the meshing shallow.
Brackets without eights are also commonly used. Even without such a bite plane 18, the wire 19
17 or tie wing 1 for ligating
The protrusions 14 corresponding to 5 and 16 are provided on the rear surface 1 of the bracket 1.
3 is always formed. What is necessary is just to make the cap 3 detachable with respect to such a protrusion part 14.

The present invention can be applied not only to the case where the bracket is attached to the lingual side of the teeth but also to the case where the bracket is attached to the lip side. That is, as shown in FIG. 7, the bracket 9 attached to the lip side surface of the tooth is a base 91 formed in a substantially rectangular plate shape adhered to the patient's tooth.
And a projection 94 formed on the back surface 93 of the base 91 (the surface opposite to the surface 92 to be bonded). Protrusion 9
4 has a slot 99 into which an orthodontic wire fits.
And tie wings 95 to 98 projecting outward on both sides of the slot 99. Therefore, the cap 3
An engaging portion for the tie wings 95 to 98 can be formed to make the cap 3 detachable from the bracket 1.

[0047]

As described above, according to the present invention, when the individual core is mounted on the bracket so that the bracket is positioned at a predetermined position with respect to the patient's teeth when the individual core is put on the patient's teeth. Is attached to the cap rather than directly attached to the bracket. Since the cap has a bracket holding portion and is detachable from the bracket, the individual core and the cap can be detachably attached to the bracket integrally. Thus, when the individual core and cap are removed from the bracket after bonding the bracket to the patient's teeth, neither is broken and remains integral.
The integrated unit of the individual core and the cap can be attached to the bracket again by the bracket holding portion of the cap. Therefore, even if the bracket adhered to the patient's teeth falls off, the previously used individual core and cap integrated with the cap are attached to the bracket again,
The bracket can be positioned on the patient's teeth. Therefore, the bracket can be bonded with the same precision as when the first bonding was performed.

[Brief description of the drawings]

FIG. 1A is a perspective view showing an example of a bracket for orthodontics, and FIG. 1B is a schematic view showing a state in which the bracket shown in FIG.

FIG. 2 is a flowchart for explaining a bracket mounting method of the present invention.

FIGS. 3A to 3D are schematic diagrams for explaining a bracket mounting method.

FIG. 4A is a perspective view showing a state before attaching the cap of the present invention to a bracket, and FIG. 4B is a perspective view showing a state after attaching the cap shown in FIG. .

FIG. 5A is a schematic view showing a state of attaching a bracket to a patient's teeth, and FIG. 5B is a front view of FIG.

FIG. 6 is a schematic view showing a state in which an individual core and a cap are removed from a bracket and teeth of a patient.

FIG. 7 is a perspective view showing an orthodontic bracket of a type that adheres to a lip side surface of a tooth.

[Explanation of symbols]

 1, 9 Bracket 11, 91 Base 12, 92 Adhesive surface 13, 93 Back surface of base 14, 94 Projection 15-16, 95-98 Tie wing 18 Byte plane 2 Positioning member 3 Bracket positioning cap 31 Base 32 Extended part 33 fitting concave part 34 folded part 4 individual core 41 negative mold 5 immediate polymerization resin 6 patient's teeth 61 lingual side of patient's teeth 62 lip side of patient's teeth 63 incisal or occlusal surface of patient's teeth 7 wire 8 model Teeth 81 Tongue side of model tooth 82 Lip side of model tooth 83 Incisal or occlusal surface of model tooth

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 17, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 6

FIG. 7

FIG.

FIG. 2

FIG. 3

FIG. 4

FIG. 5

Claims (3)

[Claims] 1. An orthodontic bracket is bonded and fixed to each tooth of a patient, and an orthodontic wire is laid over these brackets to position a bracket of an orthodontic apparatus for performing orthodontic treatment. A cap for detachably holding the bracket, and a connection connected to a resin-made individual core for each tooth having a negative shape of a cutting edge or an occlusal surface of a patient's tooth. A bracket positioning cap, which is used for positioning the bracket with respect to the individual core. 2. The bracket according to claim 1, wherein the bracket holding portion is a fitting recess into which a protrusion formed on the back side of the bracket is fitted, and the fitting recess is used when the projection is fitted. It is elastically deformed, and by its elastic return force,
A bracket positioning cap for holding the fitted projection. 3. A method of attaching the bracket to a predetermined position of each tooth of a patient using the bracket positioning cap defined in claim 1 or 2, wherein the resin in an uncured state is applied to the teeth of the tooth model of the patient. The individual core is formed by supplying a part corresponding to a cutting edge or an occlusal surface, while the bracket is held by the bracket holding portion of the cap, and the bracket is integrated with the cap to form the tooth model. By positioning the individual core and the connecting portion of the cap in this state, the individual core, the cap and the bracket are integrated, and then the individual core, By keeping the cap and the bracket integrated, the individual core is placed over the corresponding patient's tooth, thereby positioning the tooth in place. After the bracket is positioned, the bracket is adhered to a predetermined position of the patient's teeth, and then the bracket is detached from the bracket holding portion of the cap, whereby the individual core and the cap are integrated with the bracket. A bracket mounting method for an orthodontic appliance, characterized in that the bracket is separated from the patient and the bracket is left at a predetermined position on the patient's teeth.