KR102765910B1 - Custom ready-made orthodontic bracket - Google Patents

Abstract

One embodiment of the present invention provides a customized ready-made orthodontic bracket, comprising: a base portion having one surface attached to a target tooth; and a body portion having a slot formed so as to protrude from the other surface of the base portion and into which an orthodontic wire is inserted; wherein a parameter of the customized ready-made orthodontic bracket is determined based on a statistical group to which a target tooth belongs among a plurality of statistical groups obtained from a statistical distribution of a plurality of target teeth; and wherein the parameter is at least one of a torque angle, an angulation, a rotational offset, and an in-out.

Description

CUSTOM READY-MADE ORTHODONTIC BRACKET

The present invention relates to a customized ready-made orthodontic bracket, and more particularly, to a customized ready-made orthodontic bracket that can be mass-produced in a certain shape.

The teeth in the human mouth can have an uneven shape due to congenital or acquired deformities. This uneven condition is called malocclusion, and this malocclusion causes aesthetic problems that negatively affect a person's appearance, as well as functional problems such as eating and speaking with incorrect pronunciation.

As a dental treatment method to correct such malocclusion, orthodontic brackets and wires are used to cause the teeth to move by applying continuous force to the teeth and remodeling the alveolar bone surrounding the teeth.

Specifically, the orthodontic bracket is attached to the teeth, and the wire is combined with the orthodontic bracket to apply continuous force to the orthodontic bracket. Here, the orthodontic bracket is placed on each of the upper and lower teeth, so a plurality of orthodontic brackets are used, and the plurality of orthodontic brackets are connected to each other by the wire. Since the teeth are arranged in a curved shape from the left molar to the right molar, the wire is also formed in an arch shape corresponding to the arrangement of the teeth. This wire applies force to the bracket attached to the teeth, remodeling the alveolar bone, so that the teeth move and the teeth are corrected.

On the other hand, conventional ready-made orthodontic brackets have the advantage of being mass-produced because they are standardized in a certain shape, and are therefore inexpensive. However, there is a problem that the efficiency of orthodontic treatment is reduced because standardized orthodontic brackets are attached without considering the shape of each patient's teeth.

Customized orthodontic brackets are manufactured to fit the patient's teeth, so they are effective for orthodontic treatment, but they have the disadvantage of being expensive and impossible to mass-produce.

United States Patent Application Publication No. US2018/0368942 (Published on December 27, 2018)

The present invention is intended to solve the problems of the prior art described above, and an object of the present invention is to provide a customized ready-made orthodontic bracket that covers a large number of patients and can be mass-produced in a consistent form.

One aspect of the present invention provides a customized ready-made orthodontic bracket, comprising: a base portion having one surface attached to a target tooth; and a body portion protruding from the other surface of the base portion and having a slot formed into which an orthodontic wire is inserted; wherein a parameter of the customized ready-made orthodontic bracket is determined based on a statistical group to which a target tooth belongs among a plurality of statistical groups obtained from a statistical distribution of a plurality of target teeth; and wherein the parameter is at least one of a torque angle, an angulation, a rotational offset, and an in-out.

In one embodiment, the tooth types of the target teeth may include at least one of a maxillary central incisor, a maxillary lateral incisor, a maxillary canine, a maxillary premolar, a maxillary first molar, a mandibular fourth incisor, a mandibular canine, a mandibular first premolar, a mandibular second premolar, and a mandibular first molar.

In one embodiment, the statistical distribution may be for target teeth of patients corrected with pre-existing orthodontic brackets.

In one embodiment, the plurality of statistical groups may be defined to be continuous with each other and to cover more than 90% of the statistical distribution.

In one embodiment, the torque angle may be a median of one of the plurality of statistical groups.

According to one aspect of the present invention, since the parameters of the orthodontic bracket are determined from a plurality of statistical groups that cover more than 90% of the statistical distribution of each target value, the effect of a customized orthodontic bracket can be expected even though it is a ready-made orthodontic bracket.

It should be understood that the effects of the present invention are not limited to the effects described above, but include all effects that can be inferred from the composition of the invention described in the detailed description or claims of the present invention.

FIG. 1 is a perspective view of a customized ready-made orthodontic bracket according to one embodiment of the present invention.
Figure 2 is a side view of Figure 1, and is a drawing explaining the torque angle.
Figure 3 is a top view of Figure 1, and is a drawing explaining it in terms of angles.
Figure 4 is a front view of Figure 1, and is a drawing explaining the rotation offset.
Figure 5 is a side view of Figure 1, and is a drawing explaining in-out.
Figure 6 is a plan view of the maxilla and mandible.
Figure 7 is about customized prefabricated orthodontic brackets having different torque angles.
Figure 8 is about custom-made orthodontic brackets having different angulations.
Figure 9 is about custom-made orthodontic brackets having different rotational offsets.
Figure 10 is about a custom-made orthodontic bracket having different in-outs.

Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms, and therefore is not limited to the embodiments described herein. In addition, in order to clearly describe the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar drawing reference numerals throughout the specification.

Throughout the specification, whenever a part is said to "include" a component, this does not mean that it excludes other components, but rather that it may include other components, unless otherwise stated.

Terms including ordinal numbers such as "first" or "second" used in this specification may be used to describe various components or steps, but the components or steps should not be limited by the ordinal numbers. Terms including ordinal numbers should be interpreted only to distinguish one component or step from other components or steps.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a perspective view of a custom-made orthodontic bracket (100) according to one embodiment of the present invention. As shown in FIG. 1, the custom-made orthodontic bracket (100) according to one embodiment of the present invention is configured to include a base portion (110) and a body portion (120).

The base part (110) is formed in a plate shape, and one side, the tooth attachment surface (111), is attached to the teeth by an adhesive. At this time, the base part (110) may be attached not only to the front side of the teeth but also to the back side. Here, the front side of the teeth is the surface of the teeth facing the lips, and the back side of the teeth is the surface opposite to the front side, meaning the surface of the teeth facing the tongue.

In addition, the tooth attachment surface (111) of the base portion (110) may be formed as a curved surface so as to better attach to the teeth. However, this is not limited to this, and the tooth attachment surface (111) of the base portion (110) may be formed as a flat surface.

Meanwhile, the body part (120) is formed to protrude from the other surface of the base part (110) and has a slot (121) in which a wire is received. Here, the slot (121) is formed to be sunken in a direction from the outer surface of the body part (120) toward the tooth attachment surface (111) of the base part (110) so that the upper side is open. Specifically, the bottom surface of the slot (121) is formed to be horizontal along the mesio-radial axis (X) extending to both sides of the body part (120), and the wall surface of the slot (121) is formed to protrude in the protruding direction of the body part (120) from both ends in the width direction of the bottom surface.

In addition, when a wire is inserted into the slot (121), the body part (120) and the wire are coupled to each other. At this time, the slot (121) can be formed to correspond to the outer surface of the wire, and thus the wall surface of the slot (121) is in close contact with the outer surface of the wire.

A customized ready-made orthodontic bracket (100) according to one embodiment of the present invention may further include a clip portion (130) that is elastically coupled to the body portion (120) and can receive and support a wire within the slot (121).

An insertion portion (131) that is inserted between the base portion (110) and the body portion (120) is formed at one end of the clip portion (130), and a ring-shaped hook (132) is formed at the other end. When the clip portion (130) is assembled to the body portion (120), the hook (132) covers the opened upper side of the slot (121), so that the upper end of the wire is supported on the inner surface of the end of the hook (132). That is, when a wire is inserted into the slot (121), the wire can be supported by the elastic force provided from the end of the hook (132).

Meanwhile, the orthodontic bracket applies the force required for orthodontic treatment to the teeth using the force of the wire, thereby achieving orthodontic treatment. At this time, the force applied to the teeth or the arrangement of the teeth is determined by parameters consisting of torque angle, angulation, rotational offset, and in-out, so the parameters are one of the important factors that affect the orthodontic efficiency. Hereinafter, the parameters will be described.

Fig. 2 is a side view of Fig. 1. As shown in Fig. 2, the slot (121) can be formed to have a torque angle (α) by being inclined at an angle with respect to the tooth attachment surface (111) of the base portion (110).

In detail, the vertical axis passing through the center of the mesial-cardiac axis (X) of the bottom surface of the slot (121) is perpendicular to the mesial-cardiac axis (X) of the slot (121). , and the vertical axis ( ) is a tangent to the tooth attachment surface (111) at the intersection point (B1) where the base part (110) intersects with the tooth attachment surface (111). And the tangent line ( ) is perpendicular to the vertical axis When , the torque angle (α) is the vertical axis ( ) and vertical axis ( ) is the angle between them.

That is, if we express this torque angle (α) differently, it is the tangent line ( ) between the bottom surface of the slot (121) and the tooth attachment surface (111) of the base portion (110). ) is perpendicular to the vertical axis ( ) is the angle between them.

At this time, the torque angle (α) is a line perpendicular to the tangent line to the tooth attachment surface (111) of the base portion (110). ) has a positive (+) value when it is tilted toward the occlusal plane, and a negative (-) value when it is tilted toward the gingival side.

Fig. 3 is a top view of Fig. 1, and is a drawing explaining the angle (β). As shown in Fig. 3, the vertical axis () perpendicular to the root-center axis (X) of the slot (121) ) is the central occlusal-gingival axis ( ) can be tilted about the vertical axis ( ) and the central occlusal-gingival axis ( ) is called angulation (β).

Fig. 4 is a front view of Fig. 1, and is a drawing explaining the rotation offset (γ). As shown in Fig. 4, a perpendicular line extending from both ends of the slot (121) toward the base portion (110) , When the above line is , ) and the axis connecting the intersection point (B2, B3) of the tooth attachment surface (111) of the base part (110) ) with respect to the mesocardial axis (X) is called the rotational offset (γ).

Fig. 5 is a side view of Fig. 1, and is a drawing explaining the in-out (d). As shown in Fig. 5, the bottom surface of the slot (121) and the vertical axis (X) passing through the center of the bottom surface of the slot (121) in the direction of the mesial axis (X) of the slot (121) perpendicular to the mesial axis (X) of the slot (121) ) is called the in-out (d) distance between the intersection point (B1) where the base part (110) intersects the tooth attachment surface (111).

Fig. 6 is a plan view of the maxilla and the mandible. As shown in Fig. 6, the maxilla is arranged in the following order from the center toward the molars: a central incisor (U1), a lateral incisor (U2), a canine (U3), a first premolar (U4), a second premolar (U5), a first molar (U6), a second molar (U7), and a third molar (U8). In addition, as illustrated, the mandible is arranged in the following order from the center toward the molars: a central incisor (L1), a lateral incisor (L2), a canine (L3), a first premolar (L4), a second premolar (L5), a first molar (L6), a second molar (L7), and a third molar (L8).

Meanwhile, general orthodontic brackets are placed on each target tooth of the upper and lower jaws. The orthodontic brackets should be formed to have appropriate parameters according to the shape and angle of the target teeth, but the parameter values of the ready-made orthodontic brackets are fixed, which reduces the efficiency of orthodontic treatment, and the customized orthodontic brackets have the disadvantage of being difficult to mass-produce and expensive.

Accordingly, according to one embodiment of the present invention, the parameters of a customized ready-made orthodontic bracket (100) are determined from a statistical distribution of a plurality of target teeth.

The statistical distribution of target teeth may include, but is not limited to, statistical distributions of the shape, angle, and arrangement angle of the target teeth with respect to adjacent target teeth. In addition, it is desirable to derive the statistical distribution from the target teeth of patients whose malocclusion was treated using pre-existing orthodontic brackets.

Meanwhile, according to a customized ready-made orthodontic bracket (100) of one embodiment of the present invention, the teeth of the upper jaw can be grouped into a central incisor (U1), a lateral incisor (U2), a canine (U3), premolars (first premolars (U4) and second premolars (U5)), and a first molar (U6), and all the teeth of the lower jaw can be grouped into four incisors (central incisors (L1) and lateral incisors (L2)), a canine (L3), a first premolars (L4), a second premolars (L5), and a first molar (L6). The upper second molars (U7), the upper third molars (U8), the lower second molars (L7), and the lower third molars (L8) are excluded from the measurement target, but are not limited thereto. In addition, it may include only one or more of the following: maxillary central incisor (U1), maxillary lateral incisor (U2), maxillary canine (U3), maxillary premolar (U4), maxillary first molar (U5), mandibular four incisors (L1, L2), mandibular canine (L3), mandibular first premolar (L4), mandibular second premolar (L5), and mandibular first molar (L6).

That is, according to one embodiment of the present invention, parameters of a customized ready-made orthodontic bracket (100) for each target tooth can be determined from the statistical distribution of the maxillary central incisor (U1), maxillary lateral incisor (U2), maxillary canine (U3), maxillary premolar (U4), maxillary first molar (U5), mandibular four incisors (L1, L2), mandibular canine (L3), mandibular first premolar (L4), mandibular second premolar (L5), and mandibular first molar (L6).

In one embodiment, the statistical distribution for each target tooth may be divided into a plurality of statistical groups, and parameters of a customized ready-made orthodontic bracket (100) may be determined for each statistical group. At this time, the statistical distribution for each target tooth may be typically divided into N statistical groups (N is a natural number and may typically be a number from 2 to 9), and accordingly, N customized ready-made orthodontic brackets (100) may be determined for each target tooth.

That is, the parameters of the customized ready-made orthodontic bracket (100) are determined based on the statistical group to which the target value belongs among multiple statistical groups obtained from the statistical distribution of a plurality of target values.

In one embodiment, the plurality of statistical groups may be defined to cover at least 60% of the statistical distribution of each target value. Preferably, the plurality of statistical groups may be defined to cover at least 90% of the statistical distribution of each target value. Here, the plurality of statistical groups may be defined to be continuous with each other, but is not limited thereto, and may overlap with each other at the boundary between adjacent statistical groups.

In addition, the representative value of each statistical group is sufficient as long as it is a value belonging to the corresponding statistical group, such as the median, mean, or mode.

Fig. 7 relates to a custom-made orthodontic bracket (100) having different torque angles. A custom-made orthodontic bracket (100) according to one embodiment of the present invention can be formed to have a torque angle determined from a statistical group of statistical distributions of angles of target teeth. Here, parameters other than the torque angle (angulation, rotational offset, in-out, etc.) can be fixed to a predetermined value.

For example, from four statistical groups that cover more than 90% of the statistical distribution of the target angle. = -5.8°, = 1.8°, = 9.4° and = When the torque angle of 17.0° is determined, as shown in Fig. 7, the base part (110) and the body part (120) of the customized ready-made orthodontic bracket (100) , , and can be arranged to form a torque angle.

FIG. 8 relates to a custom-made orthodontic bracket (100) having different angulations. A custom-made orthodontic bracket (100) according to one embodiment of the present invention can be formed to have an angulation determined from a statistical group of statistical distributions of angles of target teeth. Here, parameters other than the angulation (torque angle, rotational offset, in-out, etc.) can be fixed to a predetermined value.

For example, from four statistical groups that cover more than 90% of the statistical distribution of the target angle. = 0°, = 2°, = 4° and = When the angulation of 6° is determined, as shown in Fig. 8, the base part (110) and the body part (120) of the customized ready-made orthodontic bracket (100) , , and can be arranged to form an angle of .

Fig. 9 relates to a custom-made orthodontic bracket (100) having different rotational offsets. A custom-made orthodontic bracket (100) according to one embodiment of the present invention can be formed to have a rotational offset determined from a statistical group of statistical distributions of angles of target teeth. Here, parameters other than the rotational offset (torque angle, angulation, in-out, etc.) can be fixed to a predetermined value.

For example, from four statistical groups that cover more than 90% of the statistical distribution of the target angle. = 0°, = 2°, = 4° and = When the rotation offset of 6° is determined, as shown in Fig. 9, the base part (110) and the body part (120) of the customized ready-made orthodontic bracket (100) , , and can be arranged to form a rotational offset.

Fig. 10 relates to a custom-made orthodontic bracket (100) having different in-outs. A custom-made orthodontic bracket (100) according to one embodiment of the present invention can be formed to have an in-out determined from a statistical group of statistical distributions of arrangement angles of a target tooth with respect to adjacent target teeth. Here, parameters other than the in-out (torque angle, angulation, rotational offset, etc.) can be fixed to a predetermined value.

For example, from four statistical groups that cover more than 90% of the statistical distribution of the array angles of the target object with its adjacent target objects. = 0mm, = 0.2mm, = 0.4mm and = When the in-out of 0.6 mm is determined, as shown in Fig. 10, the base part (110) and the body part (120) of the customized ready-made orthodontic bracket (100) , , and can be arranged to form an in-out.

In this way, if the parameters of the customized ready-made orthodontic bracket (100) are determined from multiple statistical groups that cover more than 90% of the statistical distribution of each target tooth, the effect of the customized orthodontic bracket can be expected even though it is a ready-made orthodontic bracket.

The above description of the present invention is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential characteristics of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the claims set forth below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100 custom made ready-made orthodontic brackets
110 bass section
120 body part
130 clip section

Claims (5)

For custom made orthodontic brackets,
A base portion having one side attached to the target; and
A body part having a slot formed by protruding from the other surface of the base part and into which a corrective wire is inserted;
The parameters of the above custom-made orthodontic bracket are at least one of torque angle, angulation, rotation offset and in-out, and each parameter includes multiple representative values.
The above body part and the above base part are arranged to form one representative value among a plurality of representative values for each parameter,
Each of the multiple representative values of each parameter is determined from each of the statistical groups covering the statistical distribution associated with each parameter of the target values of the patients,
The above statistical distribution is for the target teeth of patients corrected with pre-existing orthodontic brackets.
The above statistical groups are,
It is defined to cover more than 90% of the above statistical distribution,
Custom, prefabricated orthodontic brackets that are positioned contiguously with no overlapping areas with adjacent statistical groups. In paragraph 1,
A custom-made orthodontic bracket, wherein the types of the above target teeth include at least one of maxillary central incisor, maxillary lateral incisor, maxillary canine, maxillary premolar, maxillary first molar, mandibular fourth incisor, mandibular canine, mandibular first premolar, mandibular second premolar, and mandibular first molar. delete delete In paragraph 1,
The above multiple representative values are the median values of each of the above statistical groups, a customized ready-made orthodontic bracket.

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