KR20180113275A - Method for generating bending path of tooth straitening wire - Google Patents

Abstract

Disclosed is a method for generating a bending path of an orthodontic wire. According to an embodiment of the present invention, the method for generating a bending path of an orthodontic wire comprises the following steps of: generating scan data by using a three-dimensional scanner for a plurality of teeth in a cavity of a target patient; generating a virtual three-dimensional tooth model through the generated scan data; generating an occlusion plane for the virtual three-dimensional tooth model, and generating a virtual plane parallel to the occlusion plane; generating an occlusion surface where the virtual plane and the virtual three-dimensional tooth model meet; generating virtual points along the occlusion surface to generate a bending path of a wire; and outputting the bending path of the wire. According to embodiments of the present invention, a three-dimensional tooth model is generated by using a three-dimensional scanner for a plurality of teeth in a cavity of a target patient, and an occlusion plane and a virtual plane for the generated three-dimensional tooth model are generated to generate a bending path of a wire along an occlusion surface where the occlusion plane and the virtual plane meet, thereby simply setting a forming path of an orthodontic wire.

Description

METHOD FOR GENERATING BENDING PATH OF TOOTH STRAITING WIRE

Embodiments of the present invention relate to a wire bending path generation method for orthodontics.

Dental treatment refers to a series of treatments that prevent, diagnose, and treat the disease or abnormal condition of the maxillofacial area including teeth, surrounding tissues and oral cavity.

In recent years, orthodontic treatment is performed in addition to the medical care needed to improve oral hygiene and maintain healthy teeth. Orthodontic treatment refers to making healthy oral tissues and beautiful facial features by correcting various skeletal incongruities that can occur during the growth process, including simply arranging crooked teeth.

Orthodontic wire is often used in orthodontic treatment. It is a precondition to shorten the procedure period and improve the procedure effect by fabricating the wire of correct shape according to the tooth structure such as the tooth arrangement and the tooth shape of the orthodontic patient. Thus, for successful orthodontic treatment, the orthodontic wire must be precisely shaped according to the oral structure of each patient.

Such a method of forming a wire for orthodontic treatment is often carried out manually by a dentist or a dental technician after opening a mold (model) inside an oral cavity including a tooth.

When the orthodontic wire is formed by the manual method as described above, the molding quality of the orthodontic wire depends on the proficiency of the operator, and the working cost and the working time can be greatly increased, which is an increase factor of the orthodontic treatment cost do.

Therefore, a method of forming a wire is simplified, and a bending method capable of reducing the bending molding cost of the orthodontic wire is required.

Korean Patent Laid-Open Publication No. 10-2014-0142896 (December 15, 2014)

Embodiments of the present invention are directed to providing a method of creating a bending path of a wire for orthodontic treatment.

Embodiments of the present invention are also intended to provide a means for simply forming the wire according to the wire bending path and reducing the bending molding cost of the correcting wire.

According to an embodiment of the present invention, scan data is generated using a three-dimensional scanner for a plurality of teeth in an oral cavity of a target patient, a virtual three-dimensional tooth model is generated through the generated scan data, Creating an occlusal plane for the three-dimensional tooth model of the virtual three-dimensional tooth model, creating a virtual plane parallel to the occlusal plane, creating an occlusal surface where the virtual plane and the virtual three-dimensional tooth model meet, And generating a bending path of the wire, and outputting a bending path of the wire, the wire bending path generating method comprising:

In addition, the tooth scan data may be prepared as a gypsum model after the tooth patterns are formed using the impression material with respect to the plurality of teeth, and the scan data may be generated using the three-dimensional scanner with respect to the produced gypsum model.

In addition, the tooth scan data may generate scan data using the three-dimensional scanner directly with respect to the plurality of teeth.

In addition, the occlusal plane of the three-dimensional tooth model may be a virtual plane including three or more highest points of the plurality of teeth.

In addition, the occlusal plane may be formed for each of the maxilla and mandible of the plurality of teeth.

Also, at least one of the slope and the height may be adjusted in the virtual plane.

In addition, the wire bending path may create at least three virtual points for each tooth.

In addition, the virtual points may be three or more points generated in the center portion of each tooth and the right and left boundaries with respect to the center portion.

In addition, the virtual points can be adjusted to the left, right, front, back, and height, and can be controlled only in one direction at the time of the position movement.

Further, the virtual points may be additionally generated between the center portion of each tooth and each of the right and left boundaries with respect to the center portion.

In addition, the wire bending path may be formed so as to set the thickness of the wire so that the wire does not pass through the boundary of the occlusal surface.

The output data for the wire bending path may correspond to a line connecting a center point of the vertical section of the wire.

According to another embodiment of the present invention, a control board for converting coordinates for bending a wire through data output by the method for generating a wire bending path for orthodontic treatment, and a controller for controlling the motor of the machine through the converted coordinates, And bending the wire according to the shape of the wire designed through the coordinates.

According to another embodiment of the present invention, there is provided a wire manufactured by the wire manufacturing apparatus.

According to the embodiments of the present invention, a three-dimensional tooth model is generated using a three-dimensional scanner for a plurality of teeth in an oral cavity of a subject, and an occlusal plane and a virtual plane are generated for the generated three- The forming path of the wire for orthodontic wire can be easily set by creating the wire bending path according to the occlusal surface where the tooth is contacted.

Further, according to the embodiments of the present invention, since the wire manufacturing apparatus manufactures the wire in accordance with the set wire path, it is not necessary to perform a separate manual operation, so that the method of forming the wire is simplified, can do.

1 is a flowchart illustrating a method of generating a calibration wire bending path according to an embodiment of the present invention
2 is a view showing a virtual three-dimensional tooth model according to an embodiment of the present invention
3 is a view showing an occlusal plane according to an embodiment of the present invention
4 is a view illustrating a process of adjusting a position of an occlusal plane according to an embodiment of the present invention
5 is a screen showing a virtual plane according to an embodiment of the present invention
6 is a screen showing a path of a wire according to an embodiment of the present invention
7 is a view showing a path of a wire according to another embodiment of the present invention
8 is a schematic view showing a wire according to an embodiment of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting. Unless specifically stated otherwise, the singular forms of the expressions include plural forms of meanings. In this description, the expressions "comprising" or "comprising" are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, Should not be construed to preclude the presence or possibility of other features, numbers, steps, operations, elements, portions or combinations thereof.

FIG. 1 is a flowchart illustrating a method 100 for generating a wire bending path for orthodontic treatment according to an embodiment of the present invention. In the illustrated flow chart, the method is described as being divided into a plurality of steps, but at least some of the steps may be performed in reverse order, combined with other steps, performed together, omitted, divided into detailed steps, One or more steps may be added and performed.

Referring to FIG. 1, a method 100 for generating a wire bending path for orthodontic treatment according to an embodiment of the present invention includes generating scan data using a three-dimensional scanner for a plurality of teeth in an oral cavity of a subject, Generating a virtual three-dimensional tooth model through the generated scan data (S102), generating an occlusion plane for the virtual three-dimensional tooth model, and generating a virtual plane parallel to the occlusion plane (S103), creating an occlusal surface where the virtual plane and the virtual three-dimensional tooth model meet (S104), creating a virtual point along the occlusal surface to create a bending path of the wire (S105), and outputting a bending path of the wire (S106).

Specifically, in step (S101), the tooth scan data is prepared by preparing a tooth model using a impression material for a plurality of teeth, and then making the teeth model as a gypsum model. Using the three-dimensional scanner, Lt; / RTI >

In addition, it is also possible to generate scan data using a three-dimensional scanner directly in the oral cavity for a plurality of teeth without preparing a separate gypsum model.

In this case, since the process of manufacturing a separate gypsum model can be omitted, the process of forming the wire can be further simplified.

At this time, the data acquired by the three-dimensional scanner can be acquired in the form that it is acquired from a computer and a peripheral device connected to the computer and is recorded in a storage device. For example, the data is generated and stored in a three-dimensional STL (StereoLithography) .

FIG. 2 shows a screen showing a virtual three-dimensional tooth model according to an embodiment of the present invention. FIG. 3 shows a screen showing an occlusal plane according to an embodiment of the present invention. FIG. 5 is a view illustrating a virtual plane according to an embodiment of the present invention. FIG. 6 is a view illustrating a virtual plane according to an embodiment of the present invention. A screen showing the path of the wire according to one embodiment is shown.

2, the scan data generated and stored in the STL file is loaded by a computer to form a virtual three-dimensional tooth model 200. The virtual three-dimensional tooth model 200 includes a plurality of teeth For each of the maxilla and mandible.

Next, referring to FIG. 3, in step S103, the occlusal plane 210 generated for the virtual three-dimensional tooth model 200 is generated in the shape of the highest three or more points of a plurality of teeth And specifically, as shown in FIG. 3, is automatically generated as a virtual plane form, followed by the three highest points 221, 222, 223 of the plurality of teeth, and a virtual three-dimensional tooth model ( 200 may be formed for each of the formed upper and lower mandible.

Next, a virtual plane 230 parallel to the occlusal plane 210 is created, and this virtual plane 230 can be used to create any three The shafts 241, 242, and 243 are formed, and the user adjusts at least one of the tilt and the height.

5, in operation S104, the occlusal surface 250 where the imaginary three-dimensional tooth model 200 meets the virtual plane 230 generated by the positional adjustment of the occlusal plane 210, And virtual points 271, 272, and 273 are formed at positions where the occlusal surface 250 passes over the tooth surfaces of the virtual three-dimensional tooth model 200, as described in Fig. 6 (S105) 273 to generate the bending path of the wire 300.

At this time, virtual points 261, 262, and 263 may be generated for each tooth at least three or more. Specifically, virtual points 261, 262, and 263 may be generated as shown in FIG. 5 , A center portion 262 of each tooth, and three or more points generated at the right and left boundaries 261 and 263 with respect to the central portion.

FIG. 7 shows a screen showing a path of a wire according to another embodiment of the present invention.

6 and 7, hypothetical points 261, 262, and 273 that generate the bending path of the wire 300 are formed on the left and right boundaries 261 and 263 with respect to the center portion 262 of the tooth, mm intervals and virtual points 264, 265, 266 are added between the three virtual points 261, 262, 263 to create a more detailed path, as shown in Figure 7 .

In step S105, the bending path of the wire 300 can be changed by adjusting the left, right, front, back, and height with respect to the respective virtual points 261, 262, and 263, To change the positions of the virtual points 261, 262, and 263, the structure may be controlled in only one direction.

8 is a schematic view showing a wire according to an embodiment of the present invention.

Referring to FIGS. 6 and 8, in step S106, the bending path of the wire 300 may be output according to the type of the wire 300 to be output. The teeth 270 can be adjusted to penetrate through the wire 300 according to the thickness of the wire 300, as disclosed in FIGS. That is, the bending path of the wire 300 sets the thickness of the wire 300 so that the wire does not penetrate the boundary of the occlusal surface 250.

Thus, the output data for the bending path of the wire 300 can be adjusted to take the form of a line 310 connecting the central point of the wire 300 to the vertical cross-section, taking into account the thickness of the wire 300.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

200: Virtual three-dimensional tooth model
210: occlusal plane
221, 222, 223: the highest three points of plural teeth
230: virtual plane
241, 242, 243: arbitrary three axes
250: occlusal surface
261, 262, 263, 264, 265, 266: virtual points
270: Teeth
300: wire
310: Line connecting center point

Claims (15)

The scan data is generated using a three-dimensional scanner for a plurality of teeth in the oral cavity of the subject,
A virtual three-dimensional tooth model is generated through the generated scan data,
Creating an occlusal plane for the virtual three-dimensional tooth model, creating a virtual plane parallel to the occlusal plane,
Creating an occlusal surface where the virtual plane and the virtual three-dimensional tooth model meet,
Creating a virtual point along the occlusal surface to create a bending path of the wire,
And outputting a bending path of the wire.
The method according to claim 1,
Wherein the tooth scan data includes at least one of a tooth for orthodontic wire and a tooth for orthodontic wire, How to create a bending path.
The method according to claim 1,
Wherein the tooth scan data generates scan data using a three-dimensional scanner directly for the plurality of teeth.
The method according to claim 1,
Wherein the occlusal plane of the three-dimensional tooth model is a virtual plane including three or more highest points of the plurality of teeth.
The method of claim 4,
Wherein the occlusal plane is formed for each of the maxilla and mandible of the plurality of teeth.
The method according to claim 1,
Wherein the virtual plane is adjusted at least one of a tilt and a height.
The method according to claim 1,
Wherein the wire bending path produces at least three virtual points for each tooth.
The method of claim 7,
Wherein the hypothetical points are three or more points generated at the center of each tooth and at the right and left boundaries with respect to the center.
The method of claim 8,
Wherein the virtual points are adjustable in the left, right, front, back, and height, and are controlled only in one direction during the position movement.
The method of claim 8,
Wherein the imaginary points are additionally created between a central region of each tooth and a respective left and right boundaries with respect to the central region.
The method according to claim 1,
Wherein the wire bending path is configured to set the thickness of the wire so that the wire does not penetrate the boundary of the occlusal surface.
The method according to claim 1,
Wherein the output data for the wire bending path corresponds to a line connecting the midpoint to the vertical cross-section of the wire.
A computer-readable recording medium storing a program for performing a method of generating a wire bending path for orthodontic treatment according to any one of claims 1 to 12.
A control board for converting coordinates for bending a wire through data output by the method for generating a wire bending path for a tooth according to any one of claims 1 to 12; And
Wherein the motor of the machine is controlled through the transformed coordinates and bends according to the shape of the wire designed through the transformed coordinates.
A wire made with the wire manufacturing apparatus according to claim 14.

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