WO2017111184A1

WO2017111184A1 - Method for modeling teeth

Info

Publication number: WO2017111184A1
Application number: PCT/KR2015/014067
Authority: WO
Inventors: 김태환
Original assignee: 김태환
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2017-06-29
Also published as: KR101641840B1

Abstract

A modeling method for generating a teeth model used for dental treatment is provided. The modeling method may comprise the steps of: scanning teeth or a teeth mold to obtain data on the shape of teeth; generating a teeth model on the basis of the obtained data; modifying the shape of the teeth included in the generated teeth model according to a user input; and modifying the teeth model to make the teeth model symmetrical based on a center line.

Description

Tooth modeling method

The present invention relates to a method of modeling a tooth, and more particularly, to a modeling method for generating a tooth model for use in dental treatment.

Dental and oral tissues are rapidly growing in the market and development of technology in the dental field due to increasing interest in health and aesthetics.

For example, digitization of anatomical structures and three-dimensional visualization of dental information through computer graphics processing, along with computer aided design (CAD) and computer aided manufacturing (CAM) technology, artificial tooth manufacturing and dentures Technologies such as precision replication of dies and dies are being developed.

According to the conventional prosthetic processing machine, a dental mold for processing the upper and lower teeth of the lower jaw is mounted on the processing tray, and a file which scans the oral condition of the patient through the oral scanner is sent to the computer according to the program setting designed. It is designed to process the tooth shape using a working machining tool.

Patent No. 10-1329732 (name: model assembly for manufacturing tooth model) horseshoe type dental mold which is the base material of the upper and lower jaw pre-shape processing; A plurality of model bases used for fixing the dental mold, and serving as an upper and lower jaw occlusal state measurement and a manufacturing part of the tooth model; As the model base is closely assembled on the upper and lower outer surfaces, respectively, a plurality of orthodontic molds are disposed to face each other, and the center base is fixedly mounted to the prosthetic machine; And a tooth mold, which is further provided and coupled to the front end portion of the center base, as a base material for abutment-shape processing, wherein the model assembly for manufacturing a tooth model is described.

In order to process such a tooth shape, a method for better modeling the tooth model used for processing the tooth shape aesthetically and functionally is required.

One embodiment of the present invention provides a method for modeling an aesthetically superior tooth model.

In addition, an embodiment of the present invention provides a method for modeling a tooth model that can be applied according to various body characteristics of the subject to which the tooth model is applied.

As a technical means for achieving the above-described technical problem, according to an embodiment of the present invention, a method for modeling a tooth model for the arch of the computing device including the upper and lower teeth, according to an embodiment of the present invention, the teeth by scanning the teeth or teeth A scan step of obtaining data on the shape of the field; Generating a tooth model based on the obtained data; Modifying the shapes of the teeth included in the generated tooth model according to a user input; And modifying the tooth model such that the tooth model is symmetrical with respect to the center line.

In addition, the modeling method according to another embodiment may further include changing the angle of the maxillary and mandibular included in the modified tooth model.

In addition, according to another embodiment, the tooth model may include information on the arrangement of the plurality of teeth.

Further, according to another embodiment, the step of modifying the shape of the teeth, the step of loading the shape of one of the teeth included in the tooth model; Modifying the shape of the loaded tooth; And reflecting the shape of the modified tooth to the tooth model.

In addition, according to another embodiment, modifying the shape of the loaded tooth may include adjusting the flatness of the upper portion of the tooth.

In addition, according to another embodiment, the modifying the shape of the loaded tooth may include removing the surface of the shape of the loaded tooth to a predetermined thickness.

Further, according to another embodiment, modifying the shape of the loaded tooth may include modifying the length of the shape of the loaded tooth.

In addition, according to another embodiment, the step of modifying the tooth model, selecting a left side or a right side divided based on the center line; Copying and inverting the arrangement of the shapes of the teeth contained in the selected face; And replacing the shape of the teeth included in the non-selected face with an array of shapes of the copied and inverted teeth.

According to the problem solving means of the present invention described above it is possible to model a tooth model that is aesthetically superior and can be applied to the physical characteristics of the subject.

1 is an exemplary view illustrating shapes of teeth included in a tooth model, according to an exemplary embodiment.

2 is a flowchart illustrating a process of modeling a tooth model, according to an exemplary embodiment.

3 is a conceptual diagram illustrating a process of modifying a tooth model such that the tooth model is symmetrical with respect to the center line according to an embodiment.

4 is an exemplary diagram for describing a tooth model formed according to an exemplary embodiment.

FIG. 5 is a conceptual diagram illustrating a process of changing an angle of a maxillary or mandible included in a tooth model, according to an exemplary embodiment.

6 is a conceptual diagram illustrating a process of removing a surface of a tooth shape to a predetermined thickness according to an embodiment.

7 is a conceptual diagram illustrating a process of adjusting the flatness of the upper tooth in accordance with an embodiment.

8 is a conceptual diagram illustrating a process of correcting a length of a tooth shape according to an exemplary embodiment.

9 is a block diagram schematically illustrating a structure of a computing device according to an exemplary embodiment.

According to an embodiment of the present invention, a method of modeling a tooth model for a arch of the computing device including upper and lower teeth includes: a scanning step of scanning a tooth or a toothbone to obtain data about the shape of the teeth; Generating a tooth model based on the obtained data; Modifying the shapes of the teeth included in the generated tooth model according to a user input; And modifying the tooth model such that the tooth model is symmetrical with respect to the center line.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

In addition, throughout the specification, a “teeth model” is a collection of data that includes at least one of information about the appearance of a tooth, information about the arrangement of the teeth, and information about the boundary between the tooth and the gum, and includes a prosthesis or an artificial tooth. It can be used to make the back. For example, "teeth models" can be applied to computer aided manufacturing (CAM) technology to produce the appearance of prosthetics or artificial teeth.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view illustrating shapes of teeth included in a tooth model 100 according to an exemplary embodiment.

Tooth model 100 according to an embodiment means that the shape of at least one tooth is arranged. The tooth model 100 may include a shape for at least one of the upper jaw 110 and the lower jaw 120. Referring to FIG. 1, the tooth model 100 includes the teeth 11 to 18 included in the left surface 112 and the centerline 111 of the maxillary 110 based on the centerline 111 of the maxillary 110. The teeth 21 to 28 included in the right side 113, the teeth 31 to 38 included in the right side 123 based on the centerline 121 of the mandible 120, and the mandible It may be the shape of the teeth 41 to 48 included in the left surface 122 and their arrangement with respect to the center line 121 of 120. However, the present invention is not limited thereto, and the tooth model 100 may be configured by only some shapes of the teeth of FIG. 1 and their arrangement.

2 is a flowchart illustrating a process of modeling a tooth model, according to an exemplary embodiment. 3 is a conceptual diagram illustrating a process of modifying a tooth model such that the tooth model is symmetrical with respect to the center line according to an embodiment. 4 is an exemplary view for explaining a tooth model formed according to an embodiment.

First, in operation S210, the computing device may acquire data about a shape of a tooth by scanning a tooth of a target vehicle or a tooth bone modeled after a tooth. For example, by photographing or viewing a subject's tooth or tooth bone, the external shape of the tooth, the information on the boundary area between the gum and the tooth, the information on the arrangement of the tooth, and the like are numerically detected to form a tooth model. Data can be obtained. Here, the computing device may use a separate device such as an imaging device to scan the teeth or the tooth bone of the subject. The computing device may be a device capable of processing electronic data, such as a desktop, a tablet PC, a laptop, but is not limited thereto.

In operation S220, the computing device may generate a tooth model based on the obtained data. Referring to FIG. 4, the computing device may obtain an initially generated basic tooth model 410 based on the obtained data. The basic tooth model 410 shown in FIG. 4 is a basic tooth model 410 that includes the shape of anterior teeth. In general, the basic tooth model 410 initially generated by scanning a subject's teeth or tooth bones does not have symmetrical shapes of teeth at corresponding positions with respect to the center line 111, and the shape of the teeth It may include shapes that are not aesthetically appropriate due to wear or damage. Therefore, it is necessary to modify the shape of the tooth included in the basic tooth model 410 or the structure of the basic tooth model 410.

In operation S230, the computing device may modify the shape of at least one tooth included in the tooth model. The method of modifying the shape of the tooth may be variously implemented according to an embodiment. For example, the computing device may load the tooth model using a CAD program and modify the shape of the tooth included in the tooth model based on user information input through the input unit. In operation S230, the computing device may correct a damaged portion or an aesthetically inappropriate portion of the tooth included in the tooth model.

According to an embodiment of the present disclosure, the computing device may load the shape of one tooth among the shape of at least one tooth included in the tooth model. The computing device may then modify the shape of the loaded tooth. Here, the computing device may receive a user input through the input unit and modify the shape of the tooth through a CAD program based on the received user input, but is not limited thereto. In addition, the computing device may reflect the shape of the modified tooth in the tooth model.

In addition, a user may incorrectly select a tooth to correct the shape of the tooth. For example, when a user needs to modify the tooth 22 of FIG. 1, the user may select and modify the tooth 12 of FIG. 1. In this case, in order to apply to the tooth model, the computing device may be inverted and applied to the tooth model.

In operation S240, the computing device may modify the tooth model. In operation S240, the computing device may modify the overall arrangement of the teeth included in the tooth model or the shape of the tooth model. According to one embodiment, the computing device may modify the tooth model such that the tooth model is symmetrical about the centerline. In order for the tooth model to be symmetric about the centerline, the computing device may select a left or right side relative to the centerline with respect to the tooth model. Thereafter, the computing device may copy the shape and the arrangement of the teeth included in the selected surface, and then reverse the shape and the arrangement of the copied teeth. Thereafter, the computing device may replace the shape and arrangement of the teeth included in the non-selected surface with the shape and arrangement of the copied and inverted teeth so that the tooth model is symmetric about the centerline. As shown in FIG. 3, in operation S240, the computing device includes a tooth model 100-1 in which the teeth included in the left side 112 and the teeth included in the right side 113 are symmetrical with respect to the center line 111. ) Can be obtained.

Referring to FIG. 4, the computing device may obtain a final tooth model 420 symmetrical with respect to the centerline 111 as shown in FIG. 4 by performing steps S230 and S240.

2 is for describing an embodiment, and the process illustrated in FIG. 2 may be changed according to an embodiment. For example, although FIG. 2 shows that step S240 is performed after step S230 is performed, S240 may be performed first or two steps may be repeatedly performed alternately.

According to an embodiment of the present disclosure, the computing device may further perform a process of changing the maxillary or mandibular angle included in the tooth model in operation S240 of FIG. 2. FIG. 5 is a conceptual diagram illustrating a process of changing an angle of a maxillary or mandible included in a tooth model, according to an exemplary embodiment. Since there are various forms of the arch of the subject to which the prosthesis manufactured by using the tooth model is applied, it is necessary to change the angle of the tooth model differently according to the subject.

The computing device may adjust the angle of the horseshoe shape 511 of the tooth model 510. Referring to FIG. 5, the computing device may modify the tooth model 510 like the first modified tooth model 520 by reducing the angle of the horseshoe shape 511. Alternatively, the computing device may modify the tooth model 510 like the second modified tooth model 530 by increasing the angle of the horseshoe shape 511.

In addition, the prosthesis may be manufactured in the form of an outer wall of a material such as ceramic or resin around the inner core and the surroundings. To this end, according to another embodiment of the present disclosure, the computing device may remove the surface of the tooth loaded at a predetermined thickness in operation S230. 6 is a conceptual diagram illustrating a process of removing a surface of a tooth shape to a predetermined thickness according to an embodiment. Referring to FIG. 6, after the computing device loads the

shapes

611, 612, and 613 of the respective teeth in the tooth model 600, the computing device may set a thickness to be removed with respect to the loaded tooth shape.

Shapes

621, 622, 623 of the tooth having been removed to a constant thickness along the surface from the shape of the loaded tooth may be created. After the prosthesis is manufactured based on the shapes of the modified

teeth

621, 622, and 623, the final prosthesis may be made by combining an outer wall of a material such as ceramic or resin to the outside of the manufactured prosthesis.

In addition, it is necessary to adjust the flatness of the upper part of the manufactured prosthesis (particularly in the case of the prosthesis against the molar teeth) in order to occlude with another tooth or prosthesis in the mouth of the prosthesis subject. To this end, according to another embodiment, in operation S230 the computing device may adjust the flatness of the upper portion of the tooth included in the tooth model. 7 is a conceptual diagram illustrating a process of adjusting the flatness of the upper tooth in accordance with an embodiment. According to the present embodiment, the computing device may modify the shape of the tooth 710 such that the flatness of the upper portion 715 of the tooth 710 is increased. By increasing the flatness of the tooth 710, a modified shape 720 of the tooth with a higher flatness of the upper 725 can be obtained. In addition, the computing device may further modify the shape of the upper portion 725 of the modified shape 720 to obtain the shape 730 of the tooth with the higher flatness of the upper portion 735.

In addition, depending on the subject, it may be necessary to produce a prosthesis having a longer tooth shape. For example, when the subject is an elderly person, a prosthesis having a longer tooth shape may be needed due to a lack of a skeleton in the oral cavity in which the prosthesis is to be fixed. To this end, according to another embodiment, the computing device may modify the length of the shape of the tooth in step S230. 8 is a conceptual diagram illustrating a process of correcting a length of a tooth shape according to an exemplary embodiment. According to the present exemplary embodiment, the computing device may acquire the shape 820 of the modified length tooth by vertically enlarging the shape 810 of the loaded tooth. According to some embodiments, the computing device may not only modify the length of the shape of the tooth, but also generate information about the shape of the tooth such that the shape of the tooth includes the root portion of the tooth. Here, the computing device may determine the shape of the appropriate root portion in accordance with the shape of the tooth.

9 is a block diagram schematically illustrating a structure of a computing device 1000 according to an exemplary embodiment.

The computing device 1000 according to an embodiment may include an input unit 1010, a control unit 1020, and a display unit 1030. The computing device 1000 illustrated in FIG. 9 is for describing an exemplary embodiment, and according to the exemplary embodiment, the computing device 1000 may include more components than those illustrated in FIG. 9, or may include only some components. It may be.

The input unit 1010 may receive a user input and provide the received user input to the controller 1020. For example, the input unit 1010 may include at least one of a keyboard, a mouse, a tablet, a camera, and a touch screen, but is not limited thereto. In addition, the input unit 1010 may acquire data on the shape of the tooth by scanning the tooth or the tooth bone. For example, by photographing or viewing a subject's tooth or tooth bone, the external shape of the tooth, the information on the boundary area between the gum and the tooth, the information on the arrangement of the tooth, and the like are numerically detected to form a tooth model. Data can be obtained. The input unit 1010 may provide the controller 1020 with data about the acquired shape of the tooth.

The controller 1020 may perform a command according to a user input and process data. The controller 1020 may include at least one processor for data processing. The controller 1020 may generate a tooth model based on data obtained by scanning a tooth or a tooth bone. In addition, the controller 1020 may modify the tooth model or the shape of the tooth included in the tooth model based on a user input input through the input unit 1010. The method of modifying the shape of the tooth may be variously implemented according to an embodiment. For example, the controller 1020 may load a tooth model using a CAD program, and may modify a shape of a tooth included in the tooth model based on user information input through an input unit.

In addition, the controller 1020 may modify the overall arrangement of the teeth included in the tooth model or the shape of the tooth model. According to an embodiment of the present disclosure, the controller 1020 may modify the tooth model such that the tooth model is symmetric with respect to the center line. In order for the tooth model to be symmetrical with respect to the center line, the controller 1020 may select a left side or a right side based on the center line with respect to the tooth model according to a user input. Thereafter, the controller 1020 may copy the shape and the arrangement of the teeth included in the selected surface, and then reverse the shape and the arrangement of the copied teeth. Thereafter, the controller 1020 may replace the shape and arrangement of the teeth included in the unselected surface with the shape and arrangement of the copied and inverted teeth so that the tooth model is symmetric with respect to the center line.

Also, according to an embodiment, the controller 1020 may adjust the angle of the tooth model, remove the surface of the tooth shape to a certain thickness, adjust the flatness of the upper portion of the tooth shape, or modify the length of the tooth shape. .

The display 1030 may display a tooth model generated by the controller 1020. For example, the display 1030 may include an LCD panel, a PDP, a CRT, or a projector, but is not limited thereto.

An embodiment of the present invention may also be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, or program modules, or other transport mechanisms, and may include any information delivery media.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. 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 type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

Claims

A method of modeling a tooth model in which the computing device includes at least one tooth included in at least one of the maxilla and the mandible,

A scan step of scanning a tooth or toothbone to obtain data on the shape of at least one tooth;

Generating a tooth model based on the obtained data;

Modifying a shape of at least one tooth included in the generated tooth model according to a user input; And

Modifying the tooth model such that the tooth model is symmetric about a centerline.
The method of claim 1,

The modeling method,

Changing the angle of the maxillary and mandibular included in the modified tooth model.
The method of claim 1,

The tooth model is,

And a type of a plurality of teeth, the information comprising an arrangement of the plurality of teeth.
The method of claim 1,

Modifying the shape of the at least one tooth,

Loading a shape of one of the at least one tooth included in the tooth model;

Modifying the shape of the loaded tooth; And

Reflecting the shape of the modified tooth to the tooth model.
The method of claim 4, wherein

Modifying the shape of the loaded tooth,

Adjusting the flatness of the upper portion of the tooth.
The method of claim 4, wherein

Modifying the shape of the loaded tooth,

Removing the surface of the shape of the loaded tooth to a constant thickness.
The method of claim 4, wherein

Modifying the shape of the loaded tooth,

Modifying the length of the shape of the loaded tooth.
The method of claim 4, wherein

Modifying the shape of the loaded tooth,

Determining the shape of the root portion of the tooth according to the shape of the loaded tooth.
The method of claim 4, wherein

Modifying the shape of the loaded tooth,

Inverting the shape of the loaded tooth.
The method of claim 1,

Modifying the tooth model,

Selecting a left side or a right side divided based on the center line;

Copying and inverting the arrangement of the shapes of the teeth contained in the selected face;

Replacing the shape of the teeth contained in the unselected face with an array of shapes of the copied and inverted teeth.