KR100865079B1 - Orthodontic Bracket Positioning Jig and Manufacturing Method - Google Patents

Abstract

The present invention relates to an orthodontic bracket positioning jig and a method for manufacturing the orthodontic bracket which can easily detach the cap contacting the tooth from the connector and can securely and accurately attach the orthodontic bracket to the tongue-side surface of the tooth. It is about.

The present invention is formed in the lower end of the groove in contact with the teeth, the cap having a through hole in the longitudinal direction on the upper inner peripheral surface of the body; It is provided with a fixing projection that is detachably inserted into the through-hole of the cap, characterized in that consisting of a connector having a coupling portion coupled to the orthodontic bracket on the lower end of the body.

Jig, Cap, Connector, Teeth, Orthodontic Bracket

Description

Bracket Positioning Jig for A Set of Teeth and Method of Making the Same}

1 is a view showing a general orthodontic bracket,

Figure 2 is a view showing a jig of the orthodontic bracket according to the prior art,

Figure 3 is a perspective view showing a bracket positioning jig of the orthodontic bracket according to the present invention,

4 is an exploded perspective view of the cap and the connector of FIG. 3 separated;

5 is 3D shape data about the teeth of the patient read on the orthodontic program,

6 is an explanatory diagram for explaining a process of performing tooth setting for orthodontic treatment by using the orthodontic treatment program after obtaining 3D tooth shape data;

7 is an explanatory view showing a state in which the bracket positioning jig for attaching the bracket to the bracket using a tooth-orthodontic program after the tooth setting is completed,

8 is a view showing a state in which each bracket positioning jig separated using a boolean function in the orthodontic program only;

FIG. 9 is a perspective view illustrating a state in which a connector manufactured after bonding is manufactured after using a shape data of a cap of the bracket positioning jig obtained in FIG. 8 using resin in an RP machine; FIG.

10 is a cross-sectional view for explaining a process of automatically positioning the bracket on the tooth surface by combining the orthodontic bracket to the bracket positioning jig manufactured according to the present invention;

11 and 12 are diagrams illustrating a step of separating the bracket positioning jig from the tooth according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: jig 102: through hole

104: cap 106: protrusion

108: fixing protrusion 110: coupling portion

112: connector

The present invention relates to an orthodontic bracket positioning jig and a method of manufacturing the same. More particularly, the cap contacting the tooth can be easily separated from the connector, and the orthodontic bracket can be stably and accurately attached to the surface of the tooth. The orthodontic bracket positioning jig and a method of manufacturing the same.

In general, the cause of the uneven tooth or malocclusion (tooth bite misalignment) of the tooth may be due to bad eating habits such as abnormal teeth development, jawbone development, or sucking fingers when young. This is due to the lack of proper growth at.

People with such uneven or unbalanced dentitions will not be able to live a good social life by eating or talking with others, covering their mouths, or passively dealing with interpersonal relationships. Even if the food is not evenly crushed or the food waste is caught in the gap between the teeth and teeth resulting in various dental diseases or diseases of the digestive system.

In order to solve this problem, the orthodontic treatment is made to move the teeth along with the modification of the alveolar bone surrounding the teeth by applying a continuous force to the teeth.

The orthodontics are made by attaching an orthodontic bracket to each tooth surface and adjusting the wires coupled to the grooves (slots) of the bracket. In this orthodontic treatment, the positioning of the bracket attached to the tooth surface in order to properly transmit the force of the wire to the bracket plays a very important role in the treatment process and the result. Therefore, there is a need for a tool that accurately reproduces the position of the bracket (designed) through diagnosis on the surface of the patient's teeth.

The tool that accurately holds the mounting position of the bracket on the teeth of the patient is called a transfer jig (Transfer Jig), it is conventionally manufactured by the doctor himself or by hand in the laboratory. That is, after the liquid resin was poured into the gypsum tooth model equipped with a bracket and cured, a jig for each tooth was manufactured by removing the gypsum tooth model and cutting and trimming it to fit each tooth.

On the other hand, the conventional bracket used in combination with the above jig or used alone is as shown in Figure 1 below.

As shown in FIG. 1, the conventional orthodontic bracket 10 has a shape in which a pair of wings 14 and 16 are spaced apart from each other at a predetermined interval on a base 12 attached to a tooth A. FIG. Have Slots 18 are formed between the vanes 14 and 16 to which wires (not shown) are inserted.

The conventional bracket has a characteristic angle called a prescription between the base portion and the groove (slot). The bracket helps the treatment to be easy due to the inherent set angle, but for this reason, the conventional bracket has a high additional production cost (processing, etc.), and thus the price of the product is very high.

The orthodontic bracket 10 is attached to the lip side (ie, the outer) and the tongue (ie, the inner) surface of the tooth, in recent years in view of the interpersonal relationship and appearance in the user is a type attached to the teeth of the tongue I prefer.

This orthodontic bracket 10 is installed on the lower end of the jig 30 manufactured by hand, as shown in Figure 2, before being installed in the teeth.

The jig 30 has a cap 34 having a receiving portion 32 for receiving a tooth, and a coupling portion 36 which is installed on one side of the rear surface of the cap 34 and couples the orthodontic bracket to the lower end of the body. It consists of a support 38 having a. In the conventional jig, the cap 34 and the support 38 are integrally formed.

Referring to the use process of the jig 30 configured as described above are as follows.

First, after the orthodontic bracket 10 is fastened to the engaging portion 36 of the jig 30, the orthodontic bracket 10 is positioned on the surface of the tooth and the cap 34 of the jig 30 is provided. Position the receiving portion 32 formed in the tooth.

Thereafter, the surface of the tooth and the base of the orthodontic bracket 10 are bonded using a photocurable resin.

The wider the area where the jig touches the tooth, the more precise and stable the bracket can be mounted by the user. However, the orthodontic bracket positioning jig according to the prior art is made of a single bar, there is a problem that the area of contact with the surface of the tooth is limited due to the problem when the orthodontic bracket is attached to the tooth and removed.

In addition, a three-dimensional relationship (angle / distance) between the tooth for treatment and the bracket is called a prescription, which means a relationship between the treatment wire and the groove (slot) located in the bracket. Therefore, the jig should accurately express this, but as described above, the jig manufactured by hand has a problem of inferior accuracy because it is based on an external shape rather than a slot of a bracket.

In addition, the orthodontic bracket positioning jig according to the prior art may be reattached when the orthodontic bracket mounted on the patient is dropped, but if the jig produced by hand is lost, the jig of other teeth must be produced again together. There was a problem.

In particular, the orthodontic bracket positioning jig according to the prior art is produced by hand, very expensive production and purchase costs, the quality is not constant, affects the results of treatment, and once used after disposal is a problem there was.

In addition, the orthodontic bracket positioning jig according to the prior art requires about 20 to 30 jigs for one patient, but it is difficult to record marks for identification thereof.

Korean Patent Laid-Open Publication No. 2006-20214 discloses an integrated universal bracket attaching device in which the height and angle of a tooth are indicated, but there is a problem in that the manufacturing cost is high because the structure is very complicated.

In addition, Korean Patent Publication No. 2002-16324 discloses orthodontic treatment consisting of a molding portion coupled to the front end of the tooth, a body portion extending from the upper surface of the molding portion to the tooth surface, and a rubber ring for coupling the body portion and the bracket. Positioning and adhesion aids of ligation brackets are disclosed. However, this technique is difficult and complicated to precisely position the bracket since the molding part and the body part which are important for determining the mounting position of the bracket are manufactured by hand, and the molding part and the main body part are separated after the bracket is attached. The work is not simple. In addition, since the device is manufactured in a handmade manner, there is a problem that the cost increases.

Therefore, the present invention is to solve the problems as described above, the purpose of the orthodontic bracket position having a split type structure that is easily separated from the cap coupled to the tooth detachably and the connector coupled to the bracket on the lower end. To provide a setting jig.

Another object of the present invention is to provide an orthodontic bracket positioning jig that can realize the maximum contact area for the stable and accurate bracket mounting because the cap portion in contact with the teeth can be separated and adjusted freely.

Another object of the present invention is to provide a bracket positioning jig for orthodontics that can accurately reproduce the relationship between the bracket and the teeth because the lower end is connected to the groove (slot) of the bracket.

Another object of the present invention is to provide an orthodontic bracket positioning jig that can re-manufacture only the required jig using the data stored in the computer when the jig is lost.

Another object of the present invention is because the cap of the jig is designed and manufactured using a CAD / CAM, the quality of the product is constant and excellent, and the mass production can be made inexpensive orthodontic bracket positioning jig and its manufacturing method To provide.

Another object of the present invention is to provide a bracket positioning jig for orthodontic bracket is divided into two parts to discard only the cap portion in contact with the teeth and the connector portion can be recycled to reduce the burden on the user.

In order to achieve the above object, the orthodontic bracket positioning jig according to the present invention includes a cap having a recess in contact with a tooth at a lower end thereof, and having a through hole in a longitudinal direction at an upper portion of the body; It is provided with a fixing protrusion which is detachably inserted and fixed to the through-hole of the cap on one side, the other side is bent to the lower end of the body is characterized in that consisting of a connector having a coupling portion coupled to the slot of the orthodontic bracket.

The through hole and the fixing protrusion have a tapered shape from the inlet to the outlet.

The method of manufacturing the orthodontic bracket positioning jig is to produce a dental gypsum model of the patient, and then obtain 3D shape data of the patient's teeth by three-dimensional scanning using a three-dimensional (3D) scanner for tooth computer modeling. And after obtaining the 3D tooth shape data, performing a tooth setup of an orthodontic bracket for orthodontic treatment on a computer system loaded with a dedicated orthodontic program, and storing the computer system after the tooth setup is completed. Reading the image data of the bracket positioning jig stored in the coupling part of the bracket positioning jig into the slot of the orthodontic bracket and coupling the lower end of the cap to the tooth, and both the tooth setup and the bracket setup from the tooth Separates the digital shape data of each bracket positioning jig that is reflected. Keying, molding the cap portion by resin using a rapid casting (RP) machine using the digital shape data of the bracket positioning jig, and fixing fixing parts of the prefabricated connector to the molded cap. It characterized in that it comprises a step of coupling to the through-hole.

(Example)

Hereinafter, a preferred embodiment of the jig of the orthodontic bracket according to the present invention with reference to the accompanying drawings in detail as follows.

Figure 3 is a perspective view showing the orthodontic bracket positioning jig according to the invention, Figure 4 is an exploded perspective view showing a state in which the cap and connector of Figure 3 is separated.

As shown in Figure 3 and 4, the jig 100 of the orthodontic bracket according to the present invention, the lower end is coupled in contact with the upper surface of the teeth, the through hole 102 in the longitudinal direction on the upper inner peripheral surface of the body A cap 104 having a substantially rectangular box shape having a triangular protrusion 106 which is installed at a central end of the upper surface and which has an end of a separation mechanism (not shown); The fixing protrusion 108 is detachably inserted into and fixed to the through-hole 102 of the cap 104, and an orthodontic bracket (not shown) is provided at a lower end which is bent downward from the body and extended. It consists of a "112" shaped connector 112 having a coupling portion 110 extending inward and outward to engage.

The through hole 102 has a tapered shape that decreases in width from the inlet to the outlet where the fixing protrusion 108 is coupled, and the fixing protrusion 108 of the connector 112 has an inner circumferential surface structure of the through hole 102. It is preferable to have a taper shape in which the width becomes narrower toward the tip portion correspondingly. In this case, although the through hole 102 and the fixing protrusion 108 are each shown to have a quadrangular shape, the cross-sectional shape may also form another shape such as a circle. Any coupling structure may be used as long as the fixing protrusion 108 is press-fitted to the through-hole 102. The fixing protrusion 108 is preferably formed to be slightly longer than the length of the through hole (102).

The protrusion 106 is formed integrally with the cap 104, and after fixing the bracket to the patient's teeth using the jig 100, as described below, when removing the jig using a tool such as a forceps to remove the cap When the connector 112 is separated from the cap 104 by pressing the fixing protrusion 108 of the connector 112 that protrudes and is coupled to one side of the 104, the protrusion 106 serves as a supporting support jaw. . Therefore, the shape of the protrusion 106 may have any shape as long as it is a structure that can serve as a supporting jaw.

The connector 112 has a pair of wings 114a and 114b at the rear end of the fixing protrusion 108 to serve as a stopper when the fixing protrusion 108 is coupled to the through hole 102.

The jig design of the orthodontic bracket according to the present invention configured as described above and the actual procedure will be described with reference to Figures 5 to 12 as follows.

FIG. 5 illustrates 3D shape data of a patient's teeth read on a dental orthodontic program, and FIG. 6 illustrates a process of performing tooth setup for orthodontic treatment using a dental orthodontic program after obtaining 3D tooth shape data. 7 is an explanatory diagram illustrating a state in which a bracket positioning jig for attaching a bracket to a bracket is attached to the bracket using a tooth-orthodontic program after tooth cleaning is completed, and FIG. Figure 1 shows the bracket positioning jig separated using the boolean function.

First, a dental gypsum model of a patient is made in a dentist's office, and then three-dimensional (3D) shape data of a tooth is illustrated by three-dimensional (3D) scanning using a three-dimensional scanning system (not shown) for dental computer modeling. Extract as shown in 5.

The surgeon can then set up the position of the bracket on the computer system using a dedicated program for tooth set-up which can predict the result after orthodontic treatment with the tooth shape data obtained above, ie 3D tooth CAD data. Using the dedicated program, it is possible to design a diagnosis / treatment result prediction / treatment device for orthodontic treatment.

The doctor reads 3D tooth CAD data for tooth setting on the dedicated program. The 3D tooth CAD data read is data which can move each tooth A one by one. Then, attaching the bracket (10a) to each tooth (A) in the dedicated program and coupled by passing the correction wire 11 through the slot of the bracket (10a), manually moving each tooth to the desired correction position Or rearrange the teeth to achieve a uniform orthodontic state as shown in Figure 6 through the automatic correction function. According to the tooth set-up for orthodontics, the bending wire 13 is formed on the orthodontic wire 11, and these data data are later applied to the teeth after the bracket is attached to the teeth, and is reflected in the procedure for orthodontics. do.

When the tooth setup is completed as described above, as shown in FIG. 7, the image data of the bracket positioning jig 100, which is prepared in advance for each bracket 10a and stored in the storage device, is called out, and then the coupling part 110 of the jig is connected. ) Is coupled to the slot 18 of the bracket (10a). In this case, while the cap 104 portion of the bracket positioning jig 100 is coupled with the tooth A, the shape data of the tooth A is invariant, and the portion of the cap 104 is overlapped with the tooth A. The coupling is made in such a way that it is removed.

As a result, the lower end shape of the portion of the cap 104 coupled to the tooth A of the bracket positioning jig 100 has a different shape depending on the upper end shape of the tooth and the attachment position of the bracket 10a.

Then, each bracket positioning jig is separated as shown in FIG. 8 by using a boolean function to obtain the shape data of the bracket positioning jig 100. The cap 104 of the separated bracket positioning jig 100 is formed with the teeth marks (B) of the patient on the bottom surface. As a result, shape data of the patient-specific bracket positioning jig 100 is obtained.

The final data of the bracket positioning jig 100 shown in FIG. 8 is digital shape data reflecting both tooth setup and bracket setup. The final digital shape data of the bracket positioning jig 100 is then transmitted to a laboratory or a manufacturing facility equipped with a Rapid Prototyping (RP) machine, and the cap of the bracket positioning jig 100 with a transparent resin by the RP machine ( Only make 104). In the present invention, the digital shape data is supplied to the RP machine after the conversion to the CAD file to enable the CAM operation.

In the present invention, since all of the prerequisites necessary for orthodontics are reflected in the cap 104 of the bracket positioning jig, the connector 112 coupled with the cap 104 and the bracket coupled with the connector 112 ( 10a) does not have to change shape depending on the patient or the tooth. As a result, in the present invention, the connector 112 and the bracket 10a can be manufactured by mass production in advance, so that the manufacturing cost can be lowered, and these parts can be reused after cleaning, so that the cost for the orthodontic user is required. The burden can be greatly reduced. The connector 112 is manufactured in three sizes for the anterior part, the premolar part and the posterior part according to the size of the tooth.

Thereafter, when the cap 104 of the jig 100 and the connector 112 are engaged, as shown in FIG. 9, it is obtained.

Then, after coupling the engaging portion 110 of the jig 100 to the slot of the orthodontic bracket 10a, as shown in Figure 10, the cap 104 of the jig 100 is the upper portion of the tooth (A) When mounted on the base 12 of the orthodontic bracket 10a is set at a predetermined position on the surface of the tooth.

Thereafter, the photocurable bond 116 previously attached to the bottom of the base 12 is cured with a laser to fix the bracket 10a to the teeth A.

When the hardening treatment is completed, the fixing protrusion 108 of the connector 112 protruding from the through hole 102 of the cap 104 is pressed using a separation tool. Accordingly, the fixing protrusion 108 is pushed out of the through hole 102 of the cap 104 and the connector 112 is separated from the cap 104 and the bracket 10a as shown in FIG. 11. .

The cap 104 of the jig 100 is then separated from the tooth A, as shown in FIG.

Subsequently, a straightening wire (not shown) is inserted into the slot 18 of the bracket 10a, and the straightening wire is bent and molded as shown in FIG. 6 to allow displacement in the desired direction to the bracket 10a for orthodontic treatment. Induce.

In the above description of the embodiment it is illustrated that a predetermined subscription is given to the bracket, but in the present invention, any type of bracket to which the subscription is given may be used together with the bracket positioning jig. In the invention, since a subscription is given to the bracket positioning jig, the bracket can apply a product of this type without a subscription.

As described above, the present invention has a split type structure in which the cap coupled to the tooth detachably and the connector coupled to the bracket at the lower end are easily separated, so that the procedure can be performed on the lingual or labial side of the tooth.

In addition, in the present invention, since the cap part in contact with the tooth can be freely adjusted, the maximum contact area for stable and accurate bracket mounting can be realized, and the lower end is connected to the groove (slot) of the bracket, so the relationship between the bracket and the tooth is achieved. Can be reproduced accurately.

Moreover, in the present invention, if the jig is lost, only the required jig can be remanufactured using the data stored in the computer, and the quality of the product is constant and excellent because the cap of the jig is designed and manufactured using CAD / CAM. It can be mass-produced, so the price is low.

In addition, the present invention is divided into two parts to discard only the cap portion in contact with the teeth and the connector portion can be recycled to reduce the burden on the user, the doctor only laser the photocurable adhesive with the cap portion in contact with the teeth Since the positioning and fixing of the bracket are completed by scanning and curing, the procedure time can be significantly shortened as compared with the conventional method.

Claims (13)

A cap having a recess in contact with a tooth at a lower end thereof, the cap having a through hole in a longitudinal direction in an upper portion of the body; It is provided with a fixing protrusion which is detachably inserted and fixed to the through-hole of the cap on one side, the other side is bent to the lower end of the body for the orthodontic, characterized in that consisting of a connector having a coupling portion coupled to the slot of the orthodontic bracket Bracket positioning jig. The orthodontic bracket positioning jig according to claim 1, wherein the orthodontic bracket is of a non-prescription type, and the cap is provided with a prescription corresponding to the tooth. The orthodontic bracket positioning jig according to claim 1, wherein the cap of the bracket positioning jig is determined according to the shape of the teeth to be coupled. 2. The orthodontic bracket positioning jig according to claim 1, wherein the orthodontic bracket uses a predetermined average prescription in advance. The orthodontic bracket positioning jig according to claim 1, wherein the through hole and the fixing protrusion have a tapered shape from the inlet to the outlet. The orthodontic bracket positioning jig according to claim 1, wherein a length of the fixing protrusion is set longer than a length of the through hole. The orthodontic bracket positioning jig of claim 1, further comprising a stopper formed at a rear end of the fixing protrusion to limit a length of the fixing protrusion coupled to the through hole. The orthodontic bracket positioning jig of claim 1, further comprising a protrusion protruding from an upper surface of the cap to serve as a support support when the connector is separated from the cap. A recess is formed in the lower end to contact the tooth, the cap having a through hole in the longitudinal direction in the upper portion of the body, and the fixing projection extending to one side in the through hole of the cap is detachably coupled, the other side is bent to the lower end of the body In the manufacturing method of the orthodontic bracket positioning jig comprising a connector coupled to the slot of the orthodontic bracket is formed in the coupling portion, After the dental gypsum model of the patient is produced, obtaining 3D shape data of the patient's teeth by three-dimensional scanning using a three-dimensional (3D) scanner for tooth computer modeling, After obtaining the 3D tooth shape data, performing tooth setup of an orthodontic bracket for orthodontic treatment on a computer system loaded with a dedicated orthodontic program; After the tooth set-up is completed by reading the image data of the bracket positioning jig stored in the storage device of the computer system to engage the coupling portion of the bracket positioning jig to the slot of the orthodontic bracket and the lower end of the cap to the tooth and , Separating digital shape data of each bracket positioning jig reflecting both tooth setup and bracket setup from the tooth, Molding only the cap portion of the resin by a rapid casting (RP) machine using the digital shape data of the bracket positioning jig; The method of manufacturing the orthodontic bracket positioning jig characterized in that it comprises a step of coupling the fixing projection of the connector pre-fabricated to the molded cap to the through hole of the cap. 10. The method of claim 9, wherein performing a tooth setup of the orthodontic bracket for the orthodontic treatment Reading 3D tooth shape data on a computer system loaded with the dedicated orthodontic program, Attaching the orthodontic bracket to each tooth in the dedicated program and coupling the orthodontic bracket by passing the orthodontic wire through the slot of the orthodontic bracket; Manually moving each tooth to a desired correction position or rearranging the teeth to achieve a uniform orthodontic state through an automatic correction function. 10. The method of claim 9, wherein when the coupling portion of the bracket positioning jig is coupled to the slot of the orthodontic bracket and the lower portion of the cap is coupled to the tooth, the shape data of the tooth is invariable, and the cap portion is coupled with the tooth and overlaps with the tooth. The joining is done in such a way that the part being removed is When the digital shape data of the bracket positioning jig is separated, a tooth mark of the patient is formed on the bottom of the cap of the bracket positioning jig for manufacturing the orthodontic bracket positioning jig. 12. The orthodontic bracket positioning jig of claim 11, wherein the lower end of the cap portion coupled to the teeth of the bracket positioning jig has a different shape according to the upper end of the tooth and the attachment position of the bracket. Manufacturing method. 10. The method of claim 9, wherein the connector is classified into anterior part, premolar part, and posterior part according to the size of the tooth, and is manufactured in the same size in advance.

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