KR101218390B1 - Device providing align teeth data - Google Patents

Abstract

PURPOSE: An orthodontics data generation device for manufacturing a transparent brace is provided to reduce production errors of the transparent brace by preprocessing currently scanned tooth data of a patient such as tooth gap separation. CONSTITUTION: A first module designates the upper and the lower jaw from current tooth data. A second module arranges the position of the current tooth data. A third module separates teeth and gums from the current tooth data. A fourth module separates teeth from the current tooth data. A simulation part(20) generates simulation data. A database(30) stores and manages guide information. [Reference numerals] (10) Calibration data generation unit; (110) Preprocessing module; (120) Calibration data generation module; (20) Simulation unit; (30) Database; (AA) Orthodontics data generation device; (BB) Calibration data management program; (CC) First module; (DD) Second module; (EE) Third module; (FF) Fourth module; (GG) Separating an upper jaw and a lower jaw; (HH) Arranging a teeth position; (II) Separating teeth and gums; (JJ) Separating the teeth; (KK) Orthodontics data generation

Description

Device for generating orthodontic teeth for manufacturing transparent braces {Device Providing Align Teeth Data}

The present invention relates to a device for generating orthodontic teeth for the manufacture of transparent braces, and more particularly, to generate accurate orthodontic teeth data by performing pre-processing such as separation of teeth and gum area and separation between teeth on the current tooth data of the scanned patient. A device for generating orthodontic teeth for the production of transparent braces is possible.

Orthodontics can be classified into metal orthodontics using a metal bracket orthodontic device, lingual correction using an orthodontic device inside the teeth, and a transparent orthodontic device for correcting by mounting a transparent brace on a transparent material.

In particular, the transparent correction method is to cover the transparent braces of the transparent material on the teeth like the mouse pad, so that the braces are not visible from the outside and can be attached and detached. Be in the spotlight.

However, the conventional transparent orthodontic method generates orthodontic teeth data in which the orthodontic tooth data generating device is arranged in plural numbers according to the movement of the teeth from the dental data of the 3D scanned patient through the 3D scanner when the dentist requests a fabrication of the transparent braces. After forming the tooth mold by 3D printing the generated orthodontic data, the transparent film is pressed into the tooth mold by a vacuum press to produce a transparent straightener divided into a plurality of steps.

In this case, the orthodontic tooth data generating device should separate the teeth between the teeth of the patient's tooth data in actual intervals and shapes in order to move the teeth for generating the orthodontic teeth. In the case of separation to the tooth region and the gum region, accurate tooth boundary was impossible to be manufactured, thus making it impossible to manufacture a precise transparent brace.

As an object of the present invention has been made in order to solve the above problems, an object of the present invention is to precisely separate the teeth of the 3D scanned tooth data to increase the precision of the orthodontic tooth data, and to minimize the manufacturing error of the transparent braces 3D To provide a 3D tooth data separation device for manufacturing a transparent braces.

In order to achieve the above object, a device for generating orthodontic teeth for transparent braces according to the present invention is a device for straightening orthodontic transparent braces, which is divided into a plurality of stages according to a change in the tooth arrangement through the correction process on the current tooth data of the patient. An orthodontic tooth data generating device having an orthodontic data generating unit for generating tooth data, wherein the orthodontic data generating unit includes a preprocessing module configured to separate and set teeth between teeth so that orthodontic correction is possible with respect to current tooth data of the scanned patient. It features.

The pretreatment module may include a first module that separates and specifies a maxillary and a mandible from the scanned dental current tooth data, a second module for aligning positions of the current dental data of the patient, and teeth and gums in the current dental data of the patient. And a third module for separating and a fourth module for separating between teeth in the current tooth data of the patient and a fifth module for designating and storing the separated tooth.

Here, the second module aligns the position of the current dental data of the scanned patient, and designates three reference points (molar teeth and anterior teeth) of the maxillary or mandible to correct the data in the reference plane of the virtual plane connecting the three reference points. The position of the current dental data is aligned with the coordinate axis of the management program.

When the tooth and the gum region are separated through the third module, the fourth module extracts four reference points on the gum region of the space between the teeth, and the geometric surface formed by the four reference points is the bottom surface. Set the shape, and fill the space between the interface of the tooth from the bottom surface to remove the geometric shape between the teeth to separate the teeth.

In addition, the fourth module designates four reference points for each innermost point and the outermost point of two boundary lines formed by two teeth existing in the space between the teeth and the gums between the teeth. .

In addition, when the tooth boundary is not possible to set the tooth boundary itself, the fourth module extracts the tooth having the most similar shape and size of the tooth that needs mapping from the database from the database. It is characterized by specifying a boundary.

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As described above, the apparatus for generating orthodontic teeth for the transparent braces according to the present invention is based on the current tooth data of the scanned patient to generate orthodontic tooth data divided into a plurality of steps up to the final orthodontic tooth data based on individual tooth movements. Pretreatment such as separation of teeth and gum area, separation between teeth, etc. enables precise control of individual teeth, resulting in an excellent effect of generating accurate orthodontic tooth data.

1 is a perspective view showing a transparent straightener according to the present invention.
2 is a system configuration diagram schematically showing a data generating apparatus according to a preferred embodiment of the present invention.

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

Orthodontic tooth data generating apparatus for manufacturing a transparent braces applied to the present invention is defined as a digital data processing device for manufacturing a transparent braces made of a transparent material as shown in FIG.

The transparent braces according to the present invention are manufactured by being divided into multiple stages in order to finely move the teeth that need to be corrected. The corrected teeth are corrected through the orthodontic tooth data generating device according to the present invention.

2 is a system configuration diagram schematically showing a device for generating orthodontic teeth for manufacturing a transparent braces according to a preferred embodiment of the present invention.

The orthodontic teeth data generating device includes a calibration data generation unit 10 for generating orthodontic teeth data for transparent braces of a patient divided into a plurality of stages according to the change of the tooth arrangement through the correction process on the current tooth data of the patient and the The simulation unit 20 generates simulation data for contrasting contour data before and after correction based on the generated corrected tooth data and a database storing and managing the corrected dental data, contour data before and after correction, and guide information for each patient 30 ) it can comprise.

The calibration data generation unit 10 moves a plurality of teeth that need to be corrected among the pre- processing module 110 and the current tooth data of the pre-processed patient to set the teeth to be corrected with respect to the current tooth data of the scanned patient. It may be configured to include a calibration data generation module 120 for generating orthodontic tooth data divided into steps.

The calibration data generation unit 10 may further include a scanner module that performs 3D scanning directly from the tooth bone of the patient.

Here, the orthodontic teeth data generating device is provided with an interface by the orthodontic data management program that functions of each part and module.

Hereinafter, a process of preprocessing the current tooth data of the patient to generate the digital dental correction data will be described.

The preprocessing module 110 may include a first module that separates and specifies a maxillary and a mandible from the scanned dental current tooth data, and a second module for aligning the location of the current dental data of the patient and the teeth in the current dental data of the patient. And a third module for separating the gums, a fourth module for separating the teeth from the current tooth data of the patient, and a fifth module for designating and storing the separated teeth.

First, when an orthodontic data management program for generating digital orthodontic data is activated, an interface for controlling three axes (X, Y, Z axes) is generated, and as shown in FIG. Fetch and execute from database

Here, since the current dental data of the 3D scanned patient has location information (size information), the maxillary and the mandibular can be separated.

Therefore, as shown in FIG. 4, the first module separately designates the upper and lower jaws.

Here, the current dental data of the 3D scanned patient has position information, but the position information may not be uniform depending on the position at the time of scanning and the setting of the scanner, and thus the program coordinate axes may not match as shown in FIG. 5A. In order to determine the exact location information, it is necessary to align the current tooth data with the coordinate axis provided by the calibration data management program.

To this end, as shown in FIG. 5B, if the second module designates three reference points (molar teeth and anterior teeth) at the lower jaw and designates and stores location information as a reference plane on the imaginary plane connecting the three reference points, as shown in FIG. 5C. Based on the reference plane, the positional information of each tooth is exactly aligned with the program coordinate axis.

Once the location of the current tooth data is aligned as above, the third module separates the tooth and gum regions from the patient's current tooth data.

In order to generate the orthodontic data, only the tooth area should be specified, and the teeth needing correction should be gradually moved, so that the tooth area and the gum area should be separated as shown in FIG.

The current tooth data of the patient subjected to the 3D scanning process can clearly distinguish between the tooth and the gum region, so that the tooth and the gum region can be distinguished and separated through image boundary detection or selection designation.

As described above, when the tooth and the gum are separated, the fourth module separates the teeth that need to be corrected.

In case of teeth that need correction, the position of the teeth must be displaced through the process of enlarging, rotating, and returning the teeth. Therefore, a space for moving the teeth that needs to be moved for correction is required. It is difficult to distinguish between the teeth in the form that is present, it is necessary to separate between the teeth need correction.

However, no matter how good the resolution of the scanner, since the distance between the teeth is fine, it is important to accurately distinguish between teeth because the current tooth data of the 3D scanned patient is scanned as if the teeth are attached.

The present invention designates four reference points in the gum region of the space between the teeth as shown in FIG. 7A to accurately distinguish between the teeth, and sets a geometric surface formed of the four reference points as the bottom surface as shown in FIG. 7B.

As shown in FIG. 7C, the space between the teeth is specified by filling the interface between teeth from the bottom surface, and the tooth is separated by removing the specified space between the teeth.

More specifically, four reference points are set at four corners of the interface between the tooth and the gum on the gum region of the space between the teeth to separate the teeth.

Here, the four reference points may be the innermost point and the outermost point of the two boundary lines formed by two teeth existing in the space between the teeth and the gums between the teeth and the reference point may be set.

The four reference points are set to prevent the gum region or the tooth region from being separated and removed when the tooth is separated, and the four reference points are sufficient as the corner regions of the gum region between the teeth, Innermost  Branch Outermost  It is not necessary to set a point.

When four reference points are set as described above, the fourth module generates a virtual curved surface connecting the four reference points.

When the virtual curved surface is generated, the virtual curved surface becomes a bottom surface and fills a gap between two tooth interfaces to generate a geometric figure.

Since the figure of the geometrical shape generated as described above is a shape defined by the space between the teeth, if the shape of the generated geometric shape is removed, the tooth is separated as shown in FIG. 7D.

When the teeth need to be corrected through the above process, the separated teeth are designated and stored in the database as shown in FIG. 7E.

Separation between the teeth is very important to determine the extent to which the tooth can move and whether stripping is necessary for the tooth and can be accurately separated between the teeth by the above method.

If the tooth boundary itself cannot be distinguished and the tooth boundary setting itself is impossible, the tooth data information stored in the database may be used.

More specifically, and all teeth shape and size are different from each other, but that map tooth shape and size, the shape of the teeth because it has a certain degree of similarity requires a mapping of the dental patient data stored in a database (e. G., Molar) The tooth with the closest size can be extracted to infer the boundary of the tooth .

When the teeth are distinguished as described above, the fifth module designates reference information about each individual tooth as shown in FIG. 8.

Here, the reference information is a virtual arch formed based on the average height of the tooth and Distal, which is located far from Mesial, which is located close to the tongue, based on the virtual arch line of the entire tooth. It includes a FAP, which is a point located at the center of a tooth with respect to a line, and includes position and dimension information.

In addition, the axis for all teeth is set to include the designated axis information. As described above, the reference information is set, and the reference information is set for each tooth and mapped to the tooth name.

As described above, when reference information of a tooth is set, displacement, such as expansion, rotation, and return, may be controlled in stages.

When the reference information is designated as described above, the teeth that need to be corrected are moved through the expansion, rotation, and return operations to generate the corrected tooth data divided into multiple stages.

The orthodontic tooth data is generated by correcting the tooth to be aligned with the virtual arch line by expanding, rotating and returning the tooth that needs to be corrected based on the virtual arch line generated when setting reference information.

The orthodontic tooth data is data generated by moving a tooth to a predetermined position through a process of expanding, rotating, and restoring a tooth that needs to be corrected. Tooth data can be formed.

Here, the tooth expansion, rotation, and return process may be divided into a plurality of steps in a range set so that the tooth movement distance per one step is less than 1mm.

In addition, the steps of extending, rotating, and returning the tooth may be subdivided according to the condition of the tooth and the number and location of the teeth to be corrected. The necessary steps can vary from patient to patient.

The expansion of the teeth means protruding the teeth to secure a space to rotate the teeth, the rotation of the teeth means to move the teeth up and down, left and right four-axis to the position that needs to be corrected, the return of the teeth is expanded It means to move the tooth to the original position after correcting the rotation.

Here, the expansion of the tooth is a necessary process when the space for moving the tooth is not necessary. If the tooth movement space cannot be secured only by the expansion of the tooth, a stripping process of grinding the tooth to reduce the width of the tooth is further performed. May be included.

The stripping may be performed on the teeth that need to be corrected as well as the teeth located near the teeth that need to be corrected, and may optionally include a stripping process in steps of generating the corrected teeth data for the transparent braces.

Meanwhile, the simulation unit 20 maps the patient's side picture, the X-ray picture, and the current state tooth data before the correction is processed to generate the patient's state before the correction and the patient's side picture, the X-ray picture and the tooth correction unit. It is responsible for mapping the corrected teeth data and comparing the predicted contour changes after correction.

As described above, when the simulation unit 20 generates comparison data before and after calibration, the calibration data including the comparison data before and after the correction and the correction tooth data are transmitted to the dental terminal that has requested the correction to undergo the confirmation process of the attending physician and the patient. do.

Once the orthodontic tooth data is confirmed, a tooth mold for each of the orthodontic tooth data divided into a plurality of steps is manufactured.

For example, when orthodontic tooth data is generated in seven steps, a tooth mold is manufactured through a 3D printing machine based on the seven orthodontic tooth data.

Here, since the transparent braces may be difficult to adapt to the teeth when the strength is high, a plurality of transparent braces having different strengths may be manufactured when the transparent braces are prepared at each step.

More specifically, TuPan, which is a transparent material, varies in strength depending on thickness, and the thinner the thickness, the weaker the strength, so that a plurality of transparent straighteners are sequentially produced from the thinnest thickness.

For example, if the transparent braces are manufactured by dividing the strength into three types, soft, medium, and hard, depending on the thickness, the transparent braces that the patient wears on the teeth at each step are worn in the order of Soft-> Medium-> Hard. Minimize discomfort, induce a quick adaptation to the teeth, shorten the wearing period of one transparent braces to improve hygiene and improve the effect of correction.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: calibration data generation unit 110: preprocessing module
120: calibration data generation module 20: simulation unit
30: Database

Claims (6)

An orthodontic tooth data generating device including a calibration data generation unit for generating orthodontic tooth data for a transparent brace of a patient, which is divided into a plurality of stages according to a tooth arrangement change through a correction process on a current tooth data of a patient;
The calibration data generator
A first module for separating and specifying the maxillary and mandibular from the current dental data of the scanned patient;
A second module for aligning a location of current patient data of the patient;
A third module for separating teeth and gums from the patient's current tooth data;
A fourth module for separating between teeth in the patient's current tooth data;
And a pretreatment module including a fifth module for designating and storing the separated tooth.
delete The method of claim 1,
The second module
Align the location of the current dental data of the scanned patient;
Three reference points (molar and anterior teeth) of the upper or lower jaw are designated to align the position of the current tooth data by matching a virtual plane connecting the three reference points with a coordinate axis of a data calibration management program. Orthodontic tooth data generation device for manufacturing a transparent braces.
The method of claim 1,
The fourth module
When the tooth and the gum region are separated through the third module, four reference points are extracted on the gum region of the space between the teeth, and the geometric curved surface formed by the four reference points is set as the bottom surface, and the bottom surface. Orthodontic tooth data generating device for manufacturing a transparent braces, characterized in that the tooth is separated by removing the geometric figure created by filling the space between the interface between the teeth from the teeth.
5. The method of claim 4,
The fourth module
Generation of orthodontic teeth data for manufacturing a transparent braces, characterized in that four innermost points and the outermost point of the two boundary lines formed by the two teeth present in the space between the teeth and the gums between the teeth designate four reference points Device.
5. The method of claim 4,
The fourth module
If the tooth boundary cannot be set because it is impossible to set the tooth boundary itself, it is possible to specify the tooth boundary by extracting from the database the tooth with the most similar shape and size of the tooth that needs mapping from the patient's tooth data. Orthodontic tooth data generating device for manufacturing transparent braces.

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