KR20190074062A - Method for setting Gingival line to design prosthesis - Google Patents

Abstract

According to an embodiment, the present invention relates to a margin line setting method, which is a method of setting a margin line among parameters for designing a virtual prosthesis. The margin line setting method comprises the following steps: displaying a three-dimensional oral model including a treatment area; determining a mode for setting the margin line in the treatment area; setting a first margin line in the determined mode; providing a modification interface to modify the first margin line according to a user input; and correcting the first margin line along the modification interface to generate a final margin line.

Description

[0001] The present invention relates to a method of setting a margin line for designing a virtual prosthesis,

The present invention relates to a margin line setting method and a virtual prosthesis design method including the margin line setting method. More particularly, the present invention relates to a method of designing an virtual prosthesis based on a margin line set for a patient's mouth by providing an interface for setting a margin line in various modes.

Impression in the dental prosthesis manufacturing process is an important clinical process for diagnosing patients, establishing future treatment plans, and building accurate dental prosthesis.

Typical impression methods require skilled technicians to select the appropriate impression material according to the procedure and to make accurate impressions. Repetition of the impression may be inevitable due to various factors such as impression modification due to wrong selection or use of the impression material, vomiting response of the patient irrespective of the skill of the surgeon, and open defect. In addition, even in the stage of making the gypsum model after the impression taking, it may cause errors in the production of the dental prosthesis due to the limit of the detailed reproduction of the material and the abrasion.

Therefore, studies are being conducted to automate the utilization and design and production of a computer for the design and processing of a dental prosthesis that proceeds manually.

In detail, the oral cavity is digitally scanned using an oral scanner, and the scanned oral data is modeled and displayed in three dimensions. Then, the dental prosthesis is computerized on the basis of the three-dimensional oral model and a prosthesis production system Is being actively developed.

In particular, there is a growing interest in prosthetic design technology that displays the mouth image modeled in the prosthesis production system for the user to easily recognize and design the precise and aesthetic prosthesis using the displayed oral image.

The prosthetic design system provides a graphical user interface (GUI) for designing virtual prostheses. Most of the graphical user interfaces allow the virtual prosthesis to be designed through a drawing interface that depends on the operator's ability, Is dependent on the ability of the worker and there is a problem that the work time is excessively consumed.

In particular, setting the margin line, which is one of the key points in virtual prosthesis design, is important. Most of the workers set up the margin line by hand, so that it takes too much time and the quality of the prosthesis is uneven depending on the ability of the operator.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a margin line setting method for precisely setting a margin line of a three-dimensional oral model and designing a virtual prosthesis based on a set margin line and a virtual prosthesis design method including the method .

A method of setting a margin line according to an exemplary embodiment of the present invention includes: displaying a three-dimensional oral cavity model including a treatment region as a method for setting a margin line among parameters for designing an virtual prosthesis; Determining a mode for setting a margin line in the treatment area; Setting a first margin line in the determined mode; Providing a modification interface that modifies the first margin line according to a user input; And correcting the first margin line according to the modification interface to generate a final margin line.

The method of setting a margin line according to an embodiment selectively provides various modes in which a margin line can be set actively or passively according to a user's intervention, and each mode can provide functions for setting a margin line easily and quickly.

More specifically, the automatic mode among the margin line setting methods according to the embodiments has an advantage that the entire margin line can be generated quickly by automatically analyzing the three-dimensional oral model according to one point input of the user.

In addition, in the semi-automatic mode of the margin line setting method according to the embodiment, the edge is extracted based on the moving direction of the pointer even if the margin line is not exactly followed along the edge of the user, and the margin line is generated based on the extracted edge, It has the advantage of being able to generate a margin line quickly and accurately.

Also, in the manual mode of the margin line setting method according to the embodiment, the margin line is generated based on the extracted edge by analyzing the user's pointing input and the surrounding three-dimensional oral model, There are advantages.

In addition, the method of setting a margin line according to the embodiment provides an easy and quick correction interface that allows a user to correct a margin line appropriately to the oral cavity even after the user firstly draws the margin line in a desired mode, Can be improved.

1 is a block diagram of a physical configuration of an virtual prosthesis design system according to an embodiment of the present invention.
2 is a block diagram of a functional configuration of a computing device according to an embodiment of the present invention.
3 is a flowchart illustrating a design process of an virtual prosthesis according to an embodiment of the present invention.
4 is an example of a screen displaying a three-dimensional oral model according to an embodiment of the present invention.
5 shows a side arch line obtained by analyzing a three-dimensional oral model according to an embodiment of the present invention.
6 is an example of a screen for setting the position and type of the virtual prosthesis according to the embodiment of the present invention.
7 is an example of a margin line setting screen of the restoration area according to the embodiment of the present invention.
8 is a flowchart illustrating a process of setting a margin line according to an embodiment of the present invention.
9A and 9B are views showing a correction line setting process according to the embodiment of the present invention, and FIGS. 9C and 9D show a screen for correcting a margin line through a set correction line according to an embodiment of the present invention.
10 is an example of an insertion axis direction setting screen of the virtual prosthesis according to the embodiment of the present invention.
11 is an example of a parameter setting screen for intra-prosthesis according to an embodiment of the present invention.
12 is an example of a screen for setting a scale of a designed virtual prosthesis according to an embodiment of the present invention.
FIG. 13 is an example of a screen in which virtual prostheses designed according to the scale set in FIG. 12 are synthesized and displayed on a three-dimensional model.
14 is a flowchart illustrating a process of modifying an virtual prosthesis according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods of achieving them will be apparent with reference to the embodiments described in detail below with reference to the drawings. However, the present invention is not limited to the embodiments described below, but may be implemented in various forms. In the following embodiments, the terms first, second, and the like are used for the purpose of distinguishing one element from another element, not the limitative meaning. Also, the singular expressions include plural expressions unless the context clearly dictates otherwise. Also, the terms include, including, etc. mean that there is a feature, or element, recited in the specification and does not preclude the possibility that one or more other features or components may be added. Also, in the drawings, for convenience of explanation, the components may be exaggerated or reduced in size. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding components throughout the drawings, and a duplicate description thereof will be omitted .

- Overview

The virtual prosthesis designing system provides a virtual prosthesis designing method according to an embodiment of the present invention. When a patient's mouth is scanned and transmitted through an oral scanner, the oral cavity is modeled by the scan data received by the prosthodontic design computing device, Dimensional mouth model, and can provide a prosthetic design graphic user interface (CAD) for designing virtual prostheses on the basis thereof.

Further, the virtual prosthesis design system can provide a prosthetic manufacturing data design interface (CAM) that generates prosthesis manufacturing data for manufacturing the prosthesis in the prosthetic manufacturing apparatus based on the data of the designed virtual prosthesis.

The virtual prosthesis design system according to this embodiment can provide an interface for designing the prosthesis by setting the parameters of the virtual prosthesis step by step. At this time, the virtual prosthesis design system can provide precise and accurate restorations easily for unskilled persons by providing the interface for setting the parameters for each step through the intuitive interface in the frame based on the analyzed oral information, It is possible to design a prosthesis of uniform quality without depending on the wearer.

In particular, the virtual prosthetic design system according to the embodiment can easily and intuitively provide the graphic user interface for setting the margin line, which is one of the main points in setting the prosthesis parameter.

In addition, the designed virtual prosthesis can be synthesized and displayed on a three-dimensional oral model to provide the user with the ability to verify that the virtual prosthesis is suitable for the patient's mouth.

Herein, the above-mentioned virtual prosthesis can be understood as a three-dimensional model in which the contour of one or more teeth or an artificial substitute of related tissue is designed. For example, when a prosthesis is an implant, which is a material that serves as a root of a tooth, the prosthesis includes an implant body inserted into the alveolar bone, an implant abutment connected to the implant body, And an implant prosthesis that covers the implant and forms an upper portion of the artificial tooth. Also, the types of prostheses include inlay, onlay, crown, laminate, bridge, coping, implant or denture. . In addition, the prosthesis may, in its broadest sense, also include a tooth-related auxiliary device such as a surgical guide or a corrective device.

Hereinafter, each configuration of the virtual prosthesis design system will be described in detail.

1 is an internal block diagram of an virtual prosthesis design system according to an embodiment of the present invention.

Referring to FIG. 1, the virtual prosthesis design system according to an embodiment of the present invention may include an oral scanner 100 and a prosthetic design computing device 200.

- Oral Scanner

First, the oral scanner 100 can acquire scan data for three-dimensionally modeling the patient's mouth by scanning (e.g., digitally raising) the patient's mouth.

The oral scanner 100 according to this embodiment plays the role of transmitting scan data, which has been scanned all or a part of the oral cavity, to the prosthesis design computing device 200 through trigonometry, laser, image or various various scanning techniques.

Thereafter, the scan data is transferred to the prosthetic design computing device 200 and then the remaining process from designing the prosthesis to the computing device 200 is performed. Before describing the method of designing a prosthesis, each structure of the prosthetic design computing apparatus 200 will be described in detail first.

- Physical configuration of prosthetic design computing device

Referring again to FIG. 1, the prosthetic design computing device 200 according to an embodiment may include an input unit 210, an interface unit 220, a memory 230, a display 240, and a processor 250.

Specifically, the input unit 210 can detect execution inputs for turning on / off the computing device 200, settings for various prosthesis design related functions, execution inputs, and the like. For example, the input 210 may include various buttons disposed on the prosthetic design computing device 200, may include a touch sensor coupled with the display 240, and may include an interface 220 Such as a mouse, a keyboard, and the like, connected thereto.

In addition, the prosthetic design computing device 200 may include an interface unit 220 for transmitting and receiving data to / from an external device by wire or wireless.

In detail, the interface unit 220 may serve as a data path to various kinds of external devices connected to the prosthetic design computing device 200. For example, the interface unit 220 may be connected to the oral scanner 100 to receive oral scan data or transmit various scan-related setting inputs. The interface unit 220 is connected to the prosthesis manufacturing apparatus to transmit prosthesis manufacturing data, Can be produced. The interface unit 220 may be connected to various devices (e.g., a mouse, a keyboard, etc.) of the input unit 210 to receive user input.

The interface unit 220 may include a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, An audio input / output port, a video input / output port, and an earphone port, which are connected to each other. In addition, the interface unit 220 may include a wireless communication module such as Bluetooth or Wi-Fi.

In addition, the prosthetic design computing device 200 may include a memory 230.

This memory 230 may store a plurality of application programs (application programs or applications) running on the prosthetic design computing device 200, data for operation of the prosthetic design computing device 200, .

For example, the memory 230 may include a prosthesis design program (CAD) for prosthesis design, and may include a prosthesis manufacturing management program (CAM) that receives the designed prosthesis data to generate prosthesis production data. have. In particular, the memory 230 may include a program having the function of modifying the virtual prosthesis, while synthesizing and providing the designed virtual prosthesis to the three-dimensional oral model.

The memory 230 may be a variety of storage devices such as a ROM, a RAM, an EPROM, a flash drive, a hard drive, and the like, and a web storage web storage).

In addition, the prosthetic design computing device 200 may include a display 240 that displays graphical images associated with the prosthesis design.

Such a display 240 may be integrated into the computing device, or may be connected through the interface 220 as a separate display device.

Finally, the prosthetic design computing device 200 may include a processor 250 that controls the overall operation of each unit to execute an application program. Such a processor 250 may be implemented as a processor, such as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs) Micro-controllers, microprocessors, and other electronic units for performing other functions.

In the memory 230 of the prosthetic design computing device 200, at least one program for designing the prosthesis is installed, and the processor 250 can provide various functions for designing the prosthesis using such a program.

- functional configuration of prosthetic design computing device

2 is a block diagram of a virtual prosthesis design system in accordance with an embodiment of the present invention.

2, the processor 250 described above may be provided with a prosthetic design program and may include an oral display module 201, a prosthetic design module 202, and a prosthesis manufacturing management module 203.

First, the oral display module 201 can provide a function of displaying (240) a three-dimensional oral model through the oral scanner 100 or through the scan data received from the outside.

In detail, the oral display module 201 can process the pre-modeling scan data to generate a three-dimensional oral model, and display it as a mouth image capable of various graphic interfaces.

In addition, the oral display module 201 may convert the 3D model file received from the outside into a format compatible with the operation of the prosthodontic design module 202, and display it as a mouth image capable of various graphic interfaces.

In addition, the oral display module 201 can image-analyze the oral model and / or oral image to obtain various oral information. At this time, the oral display module 201 can obtain accurate and various oral information by aligning the oral image with the arc line and analyzing the oral image aligned with the arc line.

The oral display module 201 may then display oral information along with the oral image to assist the physician in understanding the patient's oral condition more easily and provide such oral image and oral information to the prosthetic design module 202 So that the prosthetic design module 202 can help provide a graphical user interface for designing the prosthesis.

The oral display module 201 may be included in the prosthesis design module 202. In the following description, the prosthodontic design module 202 includes the oral display module 201. [

The prosthesis design module 202 may be referred to as a CAD (Computer Aided Design), and it is possible to construct a database that allows planning, drawing, and correction of the prosthesis design to be performed in an optimal state. It can provide a prosthetic design function that can quickly and accurately handle all aspects of the task.

In addition, the prosthetic design module 202 may serve as an oral display module 201 that displays the data necessary for the prosthesis design in the form of an oral image and oral information to help the user understand the structure.

 In this way, by designing the prosthesis using a computing system, it is possible to improve efficiency by reducing the time and cost of design work, improve productivity, and improve quality and reliability.

That is, the prosthetic design module 202 may display (240) the oral information acquired from the three-dimensional oral model and provide a graphical user interface for designing a prosthesis based on the oral model and oral information .

Particularly, the prosthetic design module 202 has an automatic mode for automatically detecting a margin line by directly analyzing a three-dimensional oral model, a semi-automatic mode for setting a margin line based on analysis data and user input data, And manual mode in which a line is manually set.

And can be provided to design an virtual prosthesis based on such accurately established margin lines.

Finally, the prosthesis manufacturing management module 203 may be referred to as a computer aided manufacturing (CAM) machine in which a computer is introduced to the field of manufacturing a prosthesis. The prosthesis design module 202 is completed, The prosthesis manufacturing step, which may be a relevant technique at this time.

More specifically, the prosthesis manufacturing management module 203 allows the user to design a manufacturing management design necessary for the entire manufacturing process such as process design (production planning and order determination), manufacturing technology, The prosthesis manufacturing management function can be provided.

For example, the prosthesis manufacturing management module 203 can form a machining path of the prosthesis through a virtual milling program when the manufacturing apparatus is a milling apparatus, and transmits the formed machining path information and the prosthesis manufacturing data to the milling apparatus, Can be produced.

Through the prosthetic design module 202 and the prosthesis manufacturing management module 203, the user can perform all the tasks from the confirmation of the oral image to the design of the prosthesis and the manufacture of the prosthesis.

- Virtual prosthesis design method

Hereinafter, a method of designing and designing virtual prosthesis and synthesizing the virtual prosthesis into a three-dimensional model and displaying the virtual prosthesis will be described in detail with reference to FIGS. 3 to 14. FIG.

First, the prosthetic design module 202 can display a three-dimensional oral model. (S101)

The prosthodontic design module 202 according to the embodiment can display a three-dimensional oral model, in which an arc line and a three-dimensional oral model can be displayed together, and a three-dimensional oral model aligned to an arc line can be analyzed Oral information can be obtained and used for future virtual prosthesis design.

In detail, in one embodiment, the prosthetic design module 202 receives the data of the mouth scans from the oral scanner 100 and models the oral cavity in three dimensions based on the received oral scan data to generate a three-dimensional oral model And then display it.

In another embodiment, prosthodontic design module 202 may display a three-dimensional oral model received from an external server.

Such a three-dimensional oral model may be a whole oral model based on scan data obtained by scanning all of the oral cavity including the maxilla, mandible and occlusal surface, and may be an oral model that models at least one of the maxilla, mandible, And may be a partial oral model that models some areas of the maxilla, some areas of the mandible, or some areas of the occlusal surface.

And the prosthetic design module 202 may display an arch line in addition to the three-dimensional oral model. Here, the arc line may mean a line such as an arcuate shape, a U shape, a horseshoe shape or a semicircular shape corresponding to a three-dimensional oral model.

Such an arc line can be displayed so as to intuitively understand the position and the like of the three-dimensional oral model with respect to the entire oral cavity of the patient. In addition, each of the regions of the three-dimensional oral model can present a reference to the entire oral cavity, thereby assisting the computing device 200 to acquire more accurate and versatile oral information in analyzing the three-dimensional oral model aligned to the arc line Can play a role.

Such an arc line may be in a form in which the shape (e.g., curvature, size, etc.) is fixed by default. For example, an arc line of pre-stored day size and curvature may be shown that is sized to generally represent a modeled three-dimensional oral model.

For example, prosthetic design module 202, as shown in FIG. 4, may display (240) a partial three-dimensional oral model and an arc line together. Thus, a partial three-dimensional oral model may be provided with an arc line so that the positional relationship with the entire oral cavity can be confirmed.

The prosthesis design module 202 may thus provide an interface for aligning the three-dimensional oral model with the arc line.

And the prosthetic design module 202 may provide an alignment interface that moves the three-dimensional oral model or / and arc line to align the three-dimensional oral model with the arc line. In detail, the user can properly align the three-dimensional oral model with the arc line through the alignment interface if the three-dimensional oral model is not properly aligned in the arc line.

For example, the user can move the three-dimensional oral model to an alignment position in the arc line by dragging. Here, the alignment position means that the distance between each tooth and the arc line is uniform. At this time, if the size or the curvature of the arc line is a problem, the user can change the size and the curvature of the arc line to correspond to the three-dimensional oral model. In another embodiment, the oral image can be aligned to the arc line by automatically changing the arc line and / or oral image by pressing the align button after placing the oral image in a rough position within the arc line.

Once the oral model is aligned with the arc line, the prosthesis design module 202 can detect oral information based on a three-dimensional oral model aligned with the arc line. (S102)

Herein, the oral information is information about the tooth structure related to the dental structure such as the direction of alignment of the teeth (e.g., Buccal direction and lingual direction), the tooth number, the side arc line, the dental structure, the angle between teeth and teeth, And may further include tooth condition information such as the color of teeth, caries, tooth decay, tooth damage, tooth defect, and the type of prosthesis of a damaged part. In order to obtain such oral information accurately, the analysis of the 3D oral model can be performed more quickly and accurately when there is a reference arc line in the analysis of the 3D oral model.

For example, referring to FIG. 5, a side arc line 15S may be additionally displayed in the lateral oral image 10S, which is a side view of the three-dimensional oral model, As shown in FIG. For example, the slope of the opposing face of the prosthesis may correspond to the slope of the side arc line 15S.

Particularly, in the case of the partial three-dimensional oral model, the prosthetic design module 202 can acquire the tooth direction, the tooth number, and the like on the basis of the arc line, even if only a part of the oral cavity is a divided model. That is, even if the prosthetic design module 202 is a mouth model including only a partial region of the oral cavity, it is possible to acquire various oral information about the oral cavity model, so that it can be utilized effectively in designing a prosthesis later.

In addition, the prosthetic design module 202 can more easily detect the tooth number, the tooth size, the dental caries, the tooth decay, the defect, the degree of damage, the occlusal surface (corresponding to the side arc line) These oral information can be used to automatically set the parameters of the prosthesis to be designed.

Thus, the prosthetic design module 202 according to the embodiment can display a three-dimensional oral model based on the arc line to help a user intuitively grasp the oral condition, and the three-dimensional oral cavity By analyzing the image of the model, it is possible to acquire various and accurate oral information, and it is possible to design the prosthesis more easily and easily by helping to design the prosthesis based on such oral information.

The prosthetic design module 202 may then provide a parameter setting interface for the design of the virtual prosthesis based on the three-dimensional oral model.

The prosthodontic design module 202 according to an embodiment may provide a prosthesis design interface that allows a prosthesis to be designed according to sequential steps based on oral information obtained by analyzing a three-dimensional oral model based on an arc line. In detail, the prosthesis design interface makes it possible to easily determine the parameters for designing the prosthesis in each step sequentially, providing proper oral information for each step, and synthesizing and modifying the three-dimensional oral model through the determined parameters and oral information , The user can easily and effectively design the prosthesis.

Herein, the virtual prosthesis design parameters include the tooth area to be restored, the prosthesis type, the margin line, the insertion axis, the internal parameters (e.g., minimum thickness, margin thickness, cement gap, contact distance, Direction, a side arc line, a tooth number of the prosthesis to be restored, and an imaginary prosthesis scale.

These prosthesis design parameters can be manually set by the user according to the prosthesis design interface, and can be automatically set by the acquired oral information by analyzing the oral image based on the arc line.

Referring first to Fig. 6, the prosthetic design module 202 may first provide an interface for setting a treatment area to be restored in a three-dimensional oral model and a virtual prosthesis type of a treatment area. (S103, S104)

In an embodiment, the prosthesis design module 202 may determine a portion of the three-dimensional oral model as a treatment region based on user input to the displayed three-dimensional oral model. For example, the user can select a treatment area to be restored by inputting a specific point, a specific area, or a specific tooth in a three-dimensional oral model.

In an embodiment, the treatment area may be an area for designing a prosthesis. More specifically, the treatment area is an area for designing a prosthesis for one tooth. When one point is selected by the user, one prosthesis for the damaged tooth of the selected point will be designed. Therefore, the prosthodontic design module 202 can extract the tooth number T of the damaged tooth from the oral information, and provide it to design the prosthesis matched to the tooth number.

And the specific point c in the treatment area selected by the user may be the center point at which the virtual prosthesis designed subsequently will be placed.

Once the treatment area to be restored is selected, the prosthesis design module 202 can determine the prosthesis type to be designed into the treatment area.

Here, the prosthesis type may include an inlay, an onlay, a crown, a laminate, a bridge, a coping or an implant, a denture, have. In addition, the prosthesis may, in its broadest sense, also include a tooth-related auxiliary device such as a surgical guide or a corrective device.

More specifically, the prosthetic design module 202 may provide the user with an interface to list the type of prosthesis to be designed into the treatment area and to select one of them.

At this time, the prosthodontic design module 202 receives a user setting input for a plurality of treatment regions, and provides a plurality of prosthesis designs at a time, thereby shortening the prosthesis design time.

In summary, the user designates the first point in the three-dimensional oral model to be the treatment area to be restored, the tooth number of the determined treatment area is displayed, the prosthesis type of the treatment area is selected, By repeating the above procedure again, it is possible to complete the setting of the prosthesis design parameters in the first step.

Referring to FIG. 7, once the prosthesis type is determined, the prosthesis design module 202 can determine the gingival line of the treatment area to be restored. (S105)

More specifically, since the margin line, which is the boundary between the prosthesis and the tooth (or the boundary between the prosthesis and the gum) in the treatment area, is one of the main parameters that are the basis for designing the shape of the virtual prosthesis, It is possible to provide an interface for quickly and easily setting a margin line suitable for oral cavity of the user.

Hereinafter, the process of setting the margin line will be described in detail with reference to FIG.

First, a three-dimensional oral model 10 of a tooth area to be restored is displayed as shown in FIG. 7, and the user modes 61 for setting a margin line can be selectively provided. (S201)

More specifically, to determine such a margin line, the prosthodontic design module 202 may optionally provide at least two of a manual mode, a semi-automatic mode, or an automatic mode for setting the margin line. (S202)

First, the prosthetic design module 202 may receive an input by the user to select an edge within the treatment area of the three-dimensional oral model 10 of the treatment area when the user selects the automatic mode. Thereafter, the prosthetic design module 202 automatically determines a margin line based on at least one of the extending direction of the edge and the color difference of the gum, the gum area, the damaged tooth, the root tooth, and the adjacent teeth with reference to the selected edge And can be displayed on the three-dimensional oral model 10. Thereafter, the prosthetic design module 202 may provide a correction interface that allows for manual correction of the automatically determined margin line.

Next, the prosthetic design module 202 may provide a semiautomatic mode for setting the margin line based on the user's input, along with the oral model analysis information of the prosthesis design module 202, when the user selects the semi-automatic mode . (S203)

If the semi-automatic mode is provided, the prosthesis design module 202 allows the user to select one of the edges of the three-dimensional oral model 10 within the treatment area and to detect the edge based on the user selected pointing input have. (S204)

More specifically, the prosthodontic design module 202 can detect an edge around the corresponding pointing input when the user performs a pointing input (e.g., double clicking) specifying a point.

Then, the prosthodontic design module 202 forms a predetermined line around the detected edge, and after a pointing setting, moves a pointer moving according to a user input and extends a predetermined line with respect to an edge of the pointer, Lines can be generated. (S205)

Finally, the prosthesis design module 202 may complete the creation of a margin line following a predetermined line and an extended line, when the pointer of the user reaches an initial pointing point. (S206)

In other words, the semi-automatic mode uses the user's pointer input and the edge extracted from the 3D mouth model (10) image analysis, so that even if the user does not draw the margin along the edge accurately, To provide a simple and quick margin line setting.

The prosthesis design module 202 may then provide a correction interface to manually modify the semi-automatically determined margin line.

Next, the prosthetic design module 202, when the user selects the manual mode, the prosthetic design module 202 may provide a manual mode for setting the margin line based on the user's input. (S207)

If a passive mode is provided, the prosthesis design module 202 allows the user to select one of the edges of the three-dimensional oral model 10 within the treatment area to detect the edge based on the user-selected pointing input have. (S208)

More specifically, the prosthodontic design module 202 can detect an edge around the corresponding pointing input when the user performs a pointing input (e.g., double clicking) specifying a point.

The prosthesis design module 202 may then form a margin line following the pointing input of the next user and the previous pointing input, where the reference connecting the pointing input may be the detected edge.

That is, the prosthesis design module 202 may provide a passive mode in which, when the user sequentially makes a pointing input, it detects the edge between the pointing inputs and forms a margin line along the edge between the pointing inputs.

Finally, the prosthesis design module 202 may complete the creation of the margin line primarily after the previous margin line and the extended line, when the pointer of the user reaches the initial pointing point. (S209)

Once the margin line generation is completed in this way, the prosthesis design module 202 can provide a correction interface that allows the manually determined margin line to be revised again.

The prosthesis design module 202 can determine the correction line to be corrected in the margin line when the correction interface is executed. (S210, S211)

More specifically, the prosthetic design module 202 can set a correction line, which is an area to be corrected, of the margin lines in accordance with user input.

For example, referring to FIG. 9A, the prosthesis design module 202 determines the center point P of the area to be corrected in the margin line ML with the user's pointing input, and determines, based on the center point P, And at least a part of lines on both sides can be set as a correction line (RL).

More specifically, the prosthesis design module 202 may receive user input to select or extend the correction line RL on both sides after selecting the center point P. For example, as shown in FIG. 9B, when the user moves the mouse upward while pressing the control key after pointing the center point P, the correction line RL can be extended along the margin line ML , The setting of the correction line RL at that point of time can be completed by releasing the control key.

On the contrary, if the user moves the mouse downward while pressing the control key after pointing the center point P, the correction line RL is shortened toward the center point P, and when the control key is released, The setting of the correction line RL of the time point can be completed.

When the correction line RL is set, the prosthetic design module 202 can correct the margin line ML by moving the correction line RL together with the movement of the pointer (S212, S213)

More specifically, when the pointer moves with the correction line RL set, the prosthetic design module 202 can move the entire correction line RL with respect to the center point P toward the moving direction. At this time, the margin line ML other than the correction line RL is in a fixed state, and the correction line RL and the margin line ML are continuously connected.

9C, when the pointer moves, the center point P moves toward the point, and the correction line RL is changed so that the center point P is connected to the remaining correction line RL have.

Finally, if the user likes the modified line RL, the user may decide to modify the margin line ML with the corresponding correction line RL, and the prosthesis design module 202 may determine that the correction line It is possible to correct the margin line ML 'by using the line RL. (S214)

In summary, the prosthetic design module 202 provides various modes to allow the user to easily draw the margin line ML in a desired mode, and then to easily and quickly modify the margin line ML, By providing a correction interface, user convenience and quality of the prosthesis can be improved.

Returning to the description of the virtual prosthesis design, once the margin line has been set, the prosthesis design module 202 may provide an interface for determining the insertion axis, which is the insertion direction of the prosthesis. (S106)

In an embodiment, the prosthesis design module 202 may provide for setting the insertion axis setting to match a viewpoint that views the three-dimensional oral model.

More specifically, the prosthodontic design module 202 can control the user to change the viewpoint that the user views the three-dimensional oral model to display the three-dimensional oral model, and after the user changes the viewpoint When the changed view point is selected in the direction of the insertion axis, the corresponding view point can be set in the direction of the insertion axis.

At this time, the prosthodontic design module 202 displays the view point direction and the block out area, which is an area where the prosthesis is caught when inserting the prosthesis at the view point, on the three-dimensional oral model so that the user can correctly insert the view point It is possible to induce selection in the axial direction.

For example, referring to FIG. 10, in a three-dimensional oral model, a view point looking at a three-dimensional oral model can be represented by an arrow 71, and when a prosthesis is inserted in the direction of the arrow 71, 75) in a different color so that the user can intuitively select the correct insertion axis direction.

11, when the insertion axis direction is set, the prosthesis design module 202 can determine the remaining prosthesis parameters (S107)

More specifically, in embodiments, the prosthodontic design module 202 may determine parameters not yet determined in the prosthesis design parameters, such as prosthetic internal parameters and / or prosthesis contour.

Herein, the intra-prosthetic parameter includes at least one of a minimum thickness of a prosthesis, a margin thickness, a cement gap, a contact distance, and a pontic base gap can do.

The internal parameter of the prosthesis may be set to a value that is generally used statistically in the dentistry. Accordingly, the step of setting the internal parameter of the prosthesis according to the embodiment is a step of once again checking and correcting the basic setting or the user setting value Lt; / RTI >

Once the prosthesis design parameters are set in this way, the prosthesis design module 202 can determine the shape of the virtual prosthesis according to the determined prosthesis parameters. (S108)

More specifically, the prosthesis design module 202 can detect in the library the prosthesis shape that matches the set prosthesis design parameters. For example, the prosthesis design module 202 can detect in the library 95 the prosthesis shape that matches the tooth number and prosthesis type.

And the prosthetic design module 202 may change the detected prosthesis shape according to the prosthesis design parameters or oral information.

For example, the prosthetic design module 202 may change the detected prosthesis shape according to the margin line ML, the intra-prosthetic parameter. The prosthesis design module 202 can also change the top surface of the detected prosthesis shape to be inclined along the side arc line.

Once the shape of the virtual prosthesis is determined, the prosthesis design module can provide an interface for determining the scale of the virtual prosthesis. (

In detail, the prosthesis design module 202 may provide an interface to allow the user to set the scale of the virtual prosthesis in a three-dimensional oral model, in order to synthesize the virtual prosthesis into a three-dimensional oral model for the oral size of the patient.

For example, referring to FIG. 12, the prosthetic design module 202 may determine the scale of the virtual prosthesis by receiving the length setting inputs P1, P2 within the three-dimensional oral model 10. More specifically, the user selects the first point P1 and the second point P2 in the three-dimensional oral model 10 to calculate the length d of the line segment connecting the first point P1 and the second point P2, Can be set to the scale of the virtual prosthesis (90).

When the scale setting is completed, the prosthetic design module 202 determines the size of the virtual prosthesis 90 so as to correspond to the scale setting of the user, and sets the virtual prosthesis 90 in the determined size on the three-dimensional oral model 10 Can be displayed. (S109)

13, when the user sets a length corresponding to the long axis S of the treatment area as a user input, the prosthodontics design module 202 calculates the length of the virtual prosthesis 90 And the long axis S may be determined to be the input length d.

The prosthetic design module 202 can also synthesize the virtual prosthesis 90 into the three-dimensional oral model 10 so that the virtual prosthesis 90 is located in the treatment region of the three-dimensional oral model 10.

The prosthetic design module 202 can determine the placement of the three-dimensional oral model 10 on the virtual prosthesis 90 designed based on prosthetic design parameters, oral information, and / or user scale input.

For example, the prosthetic design module 202 places a certain point c of the treatment area entered by the previous user (e.g., center point) to be centered on the virtual prosthesis 90, Can be determined in accordance with the insertion axis direction and the tooth alignment directions (B, L).

Also, the prosthetic design module 202 may determine the placement direction of the prosthesis along the direction D of the length line segment when the scale setting of the user is input.

13, the placement direction of the virtual prosthesis 90 (for example, the horizontal and vertical rotational directions) is shifted from the insertion axis direction to the treatment axis direction while the center of the virtual prosthesis 90 is positioned at the specified point c of the treatment area. It can be confirmed that the virtual prosthesis 90 is arranged in the three-dimensional oral model 10 in the correct direction and position.

When the virtual prosthesis 90 is displayed on the three-dimensional oral model 10, the prosthodontic design module 202 can provide a retouch function that allows the virtual prosthesis 90 to be manually modified.

14, the prosthesis design module 202 can see the virtual prosthesis 90 displayed in a synthesized and synthesized form in the three-dimensional oral model 10, have. The prosthetic design module 202 can change the virtual prosthesis 90 according to the user's correction input and provide a retouch function so that the user can correct the virtual prosthesis 90 while checking the correction in real time.

The prosthodontic design module 202 according to the present invention can provide a prosthodontic design interface that can easily design uniform quality prosthesis irrespective of the user's proficiency by sequentially setting the prosthesis design parameters in accordance with the steps.

The embodiments of the present invention described above can be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. The program instructions recorded on the computer-readable recording medium may be those specifically designed and configured for the present invention or may be those known and used by those skilled in the computer software arts. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROM and DVD, magneto-optical media such as floptical disks, medium, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code, such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be modified into one or more software modules for performing the processing according to the present invention, and vice versa.

The specific acts described in the present invention are, by way of example, not intended to limit the scope of the invention in any way. For brevity of description, descriptions of conventional electronic configurations, control systems, software, and other functional aspects of such systems may be omitted. Also, the connections or connecting members of the lines between the components shown in the figures are illustrative of functional connections and / or physical or circuit connections, which may be replaced or additionally provided by a variety of functional connections, physical Connection, or circuit connections. Also, unless explicitly mentioned, such as " essential ", " importantly ", etc., it may not be a necessary component for application of the present invention.

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 as defined by the appended claims. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

Claims (10)

A method for setting a margin line among parameters for designing an virtual prosthesis,
Displaying a three-dimensional oral model including a treatment area;
Determining a mode for setting a margin line in the treatment area;
Setting a first margin line in the determined mode;
Providing a modification interface that modifies the first margin line according to a user input; And
Correcting the first margin line in accordance with the modification interface to generate a final margin line
How to set margin line to design virtual prosthesis. The method according to claim 1,
Wherein the determining of the mode for setting the margin line comprises:
A step of selecting at least one of an automatic mode, a semi-automatic mode, and a manual mode
How to set margin line to design virtual prosthesis. 3. The method of claim 2,
Wherein setting the first margin line in the automatic mode comprises:
Receiving an input selecting a user's edge, and automatically generating a margin line along the selected edge
How to set margin line to design virtual prosthesis. 3. The method of claim 2,
Wherein setting the first margin line in the semi-automatic mode comprises:
The method comprising: detecting an edge based on a user's pointing input; forming a predetermined line along the edge; and extending the predetermined line with respect to an edge in accordance with the pointer movement of the user
How to set margin line to design virtual prosthesis. 3. The method of claim 2,
Wherein the step of setting the first margin line in the semi-
Detecting an edge based on a user's pointing input; and connecting the pointing input and the previous pointing input of the next user along the edge to generate a margin line
How to set margin line to design virtual prosthesis. Wherein providing a modification interface that modifies the first margin line in accordance with a user input comprises:
Setting at least a portion of the margin line as a correction line; and modifying the correction line in accordance with a user ' s pointer movement
How to set margin line to design virtual prosthesis. The method according to claim 6,
Wherein setting the at least a portion of the margin lines to a correction line comprises:
Determining a center point of the area to be corrected in the margin line,
And setting at least some of the lines on either side of the center point as a correction line in accordance with a user's input
How to set margin line to design virtual prosthesis. The method according to claim 6,
Wherein the modifying the modification line in accordance with a user ' s pointer movement comprises:
Extending or shortening the correction line so that the center point moves to a moving position of the pointer
How to set margin line to design virtual prosthesis. 9. The method of claim 8,
Modifying the margin line with the modified line modified at the time of the decision input, if there is a correction decision input from the user
How to set margin line to design virtual prosthesis. The method according to claim 1,
And generating the virtual prosthesis based on the determined final margin line
How to set margin line to design virtual prosthesis.

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