KR20190063718A - METHOD AND SYSTEM FOR GENERATING three-dimensional oral model - Google Patents

Abstract

The present invention relates to a method for generating a three-dimensional oral model, which comprises the steps of: generating the three-dimensional oral model based on oral scan data; generating a three-dimensional impression model based on impression scan data; converting the three-dimensional impression model to match the same to the three-dimensional oral model; aligning the converted three-dimensional impression model to the three-dimensional oral model; complementing the three-dimensional oral model based on the aligned three-dimensional impression model; and displaying the complemented three-dimensional oral model.

Description

[0001] METHOD AND SYSTEM FOR GENERATING [0002]

The present invention relates to a method for generating a three-dimensional oral model. More particularly, the present invention relates to a method of generating a three-dimensional oral model by scanning the mouth and the impression of the mouth using the oral scanner.

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, as a technique for precisely three-dimensionally modeling the user's mouth, which is the basis of the prosthesis design, development is being actively made on technologies such as an oral scanner for digitally pulling the oral cavity and analysis of acquired scan data.

However, no matter how good the performance of the digital scooping oral scanner is, due to the development of the technology, the physical or physical properties such as contamination of the oral cavity by blood and needle, sub gingival margin, There is a problem that it is difficult to scan correctly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for creating an accurate and precise three-dimensional oral cavity model by scanning the oral cavity and the impression body in a digital impression manner and combining the scan data.

According to an embodiment of the present invention, there is provided a method of generating a three-dimensional oral model, the method comprising: generating a three-dimensional oral model based on oral scan data; Generating a three-dimensional impression model based on the impression material scan data; Transforming the three-dimensional impression model to match the three-dimensional oral model; Aligning the transformed three-dimensional impression model with the three-dimensional oral model; Complementing the three-dimensional oral model based on the aligned three-dimensional impression model; And displaying the supplemented three-dimensional oral model.

According to an embodiment of the present invention, there is provided a system for generating a three-dimensional oral cavity model, comprising: an oral scanner for scanning a shape of an oral cavity in a digital pull-up system; And a computing device for three-dimensionally modeling the oral cavity based on the scan data obtained by scanning the shape of the oral cavity, wherein the oral scanner comprises: oral scan data obtained by scanning the oral cavity; Transmits the scan data to the computing device, and the computing device generates a three-dimensional oral model based on the oral scan data and the impression body scan data, and displays the generated three-dimensional oral model.

The method of generating a three-dimensional oral model according to an embodiment of the present invention is a method of generating a three-dimensional oral model by using a digital impression method oral scanner to scan a mouth and a surgeon of the oral cavity, Can be scanned.

The three-dimensional mouth model generation method includes arranging a three-dimensional impression model created based on the impression body scan data on a three-dimensional oral model created based on oral scan data, By matching the dimensional oral model, it is possible to create a three-dimensional oral model with both the advantages of digital lifting and contact-type scanning.

And by providing a design tool to design the prosthesis based on this accurate and precise three-dimensional oral model, the patient can be provided with an oral-optimized prosthesis design.

1 is an internal block diagram of a three-dimensional oral modeling system according to an embodiment of the present invention.
2 shows an oral scanner according to an embodiment of the present invention.
3 is an internal block diagram of a computing device for generating a three-dimensional oral model according to an embodiment of the present invention.
4 is a flowchart illustrating a three-dimensional oral model creation process according to an embodiment of the present invention.
FIG. 5 illustrates a method of directly scanning the mouth through the oral scanner according to the embodiment of the present invention.
FIG. 6 shows a three-dimensional oral model created based on oral scan data according to an embodiment of the present invention.
FIG. 7A shows a state in which a pulling member is used to make a pulling body for a sewing area in the mouth, and FIG. 7B shows a pulling body produced in FIG. 7A.
FIG. 8 conceptually shows a state in which a mouth-shaped impression is scanned according to an embodiment of the present invention.
9 shows a three-dimensional impression model generated based on scanned data of a impression material according to an embodiment of the present invention.
FIG. 10 shows a state in which the impression body model is rotated according to the embodiment of the present invention.
11 shows a state in which the impression body model according to the embodiment of the present invention is inversely transformed.
FIG. 12 shows a state in which the oral model and the impression body model are matched according to the embodiment of the present invention.
Figure 13 shows a three-dimensional oral model supplemented based on a matched impression model according to an embodiment of the present invention.
Fig. 14 shows a virtual prosthesis designed on the basis of the three-dimensional oral model of Fig.

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

A three-dimensional oral modeling system for providing a method of designing a prosthesis according to an embodiment of the present invention includes: scanning a patient's mouth through an oral scanner; 3D modeling of the oral cavity with scan data obtained from the oral scanner; displaying a modeled 3D oral image; , And can provide a prosthesis design graphic user interface (CAD) for designing a prosthesis based on this.

Particularly, the 3D oral modeling system can scan the mouth and the mouth impressions through the digital impression type oral scanner, and can scan the area hard to scan in the digital impression manner through the oral scan data and the impression body scan data have.

In addition, the three-dimensional oral modeling system can accurately reproduce a patient's oral cavity as a three-dimensional oral model by converting the impression body scan data into the oral scan data format and then matching the converted impression body scan data with the oral scan data .

And by providing a design tool that can design the prosthesis based on such precise and precise three-dimensional oral models, it is possible to create an oral-optimized prosthesis for the patient.

Here, a prosthesis may mean one or more teeth or artificial replacements of related tissue. 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.

For example, the types of prostheses may include inlay, onlay, crown, laminate, bridge, coping, implant, or denture. And the like. 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 of the components constituting the three-dimensional oral modeling system will be described in detail.

1 is an internal block diagram of a three-dimensional oral modeling system according to an embodiment of the present invention.

Referring to FIG. 1, a three-dimensional oral modeling system according to an embodiment of the present invention may include an oral scanner 100 and a computing device 200.

- Oral Scanner

First, the oral scanner 100 can acquire the oral scan data and the impression body scan data necessary for 3D modeling of the patient's mouth by scanning (e.g., digitally pulling) the patient's mouth and impression body.

The oral scanner 100 according to this embodiment plays a role of transmitting scan data, which is a scan of all or part of the oral cavity, to the computing device 200 through scan techniques such as trigonometry, laser, image or image.

2 shows an oral scanner according to an embodiment of the present invention.

2, the oral scanner 100 according to an embodiment of the present invention includes a body 120 having a handpiece shape so that a user holds the handle of the body and senses the scan sensor 110, , The desired areas can be scanned. At this time, since the sensing area that the oral scanner 100 can scan is limited, the user scans the optical area while gradually moving the body, and the computing device 200 aligns the plurality of scan data, Can be modeled.

Therefore, in the embodiment, the oral scanner 100 may further include a position sensor inside to accurately determine the sensing area of the plurality of scan data. For example, the oral scanner 100 may include at least one of a gyro sensor, an acceleration sensor, a geomagnetic sensor, and a motion sensor to measure position information converted by the movement or tilt of the oral scanner 100.

Thereafter, the scan data and the position information are transmitted to the computing device 200 and then the remaining process from designing the prosthesis is performed in the computing device 200. Before describing the method of designing a prosthesis, each configuration of the computing device 200 will be described in detail first.

- Physical configuration of the computing device

Referring again to FIG. 1, a 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 detects an execution input for turning on / off the computing device 200, a setting for a three-dimensional oral modeling function, various restoration-related functions, an execution input, and the like . For example, the input 210 may include various buttons disposed on the computing device 200, may include a touch sensor coupled with the display 240, and may be coupled through the interface 220 A mouse, a keyboard, and the like.

In addition, the 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 computing device 200. For example, the interface unit 220 may be connected to the oral scanner 100 to receive the oral scan data, the impression body scan data, or the oral scanner 100 position information. Conversely, the interface unit 200 may transmit various scan-related setting inputs to the oral scanner 100, and may be connected to the prosthesis manufacturing apparatus to transmit the prosthesis manufacturing data to produce a prosthesis. 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 computing device 200 may include a memory 230.

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

For example, the memory 230 may include an oral modeling program for a three-dimensional oral model and a prosthesis design program (CAD) for prosthesis design, and a prosthesis that receives the designed prosthesis data and generates prosthesis production data And a manufacturing management program (CAM).

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 computing device 200 may include a display 240 for displaying graphic images relating to 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 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 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 the program.

- functional configuration of the computing device

3 is a block diagram of a three-dimensional oral modeling system in accordance with an embodiment of the present invention.

3, the prosthesis design program may be installed in the processor 250 to include the oral display module 201, the prosthesis design module 202, and the 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 an embodiment, the oral display module 201 may generate a three-dimensional oral model through the oral scan data and the impression body scan data received from the oral scanner 100.

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 displays the three-dimensional oral model as an oral image, displays the oral information acquired from the oral image together (240), and designs a prosthesis based on the oral image and oral information A graphical user interface can be provided.

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.

- Three-dimensional oral modeling method

4 is a flowchart illustrating a three-dimensional oral model creation process according to an embodiment of the present invention.

Referring to FIG. 4, the oral scanner 100 can scan the oral cavity by a user's operation.

5, the user can scan the oral cavity of the patient in a digital lifting manner by illuminating the mouth cavity of the patient with the oral cavity scanner 100. [ For example, the user can acquire the oral scan data by sensing the scan area SA by pressing the scan button 125 after directing the scan sensor 11 to at least a partial area of the oral cavity to be scanned, By repeating these operations, it is possible to acquire oral scan data for a desired scan area.

At this time, the position sensor inside the oral scanner 100 can acquire the positional information by measuring changes in the position, inclination, and the like of the oral scanner 100 by matching with the oral scan data.

The oral scan data and the positional information thus measured may be transmitted from the oral scanner 100 to the computing device 200 through the interface unit 220.

The prosthetic design module of the computing device receiving the oral scan data and the positional information can generate a three-dimensional oral model based on the oral scan data and the positional information. (S102)

In an embodiment, a three-dimensional oral model is first created based on oral-scan data, and then a three-dimensional oral model is created in the order of supplementing the three-dimensional oral model generated through the impression body scan data. In another embodiment, After receiving the data and the impression body scan data, two scan data may be simultaneously analyzed to generate a three-dimensional oral model, and such another embodiment may also be included in the present invention.

According to an embodiment, the prosthesis design module 202 may generate a three-dimensional oral model for a scan region that is at least a portion of the oral cavity based on the oral scan data.

Such oral scan data is data obtained by a digital pull-up method scan, so that some areas may not be scanned or errors may occur due to obstructions such as blood and saliva, and some margin lines May be hidden and scanned unscathed.

6, the three-dimensional oral model 10 may include a first error region F1 that is disconnected because a portion of the margin line is not covered by the gingival scan, And a second error region F2. Here, the error area may refer to an area that has not been scanned, a region that has been scanned but has an error due to noise, or a region under the gingiva.

When designing a prosthesis based on such a three-dimensional oral model 10, the shape of the prosthesis area corresponding to the error area can not be specified, and it may be difficult to design a prosthesis optimized for the patient.

In order to compensate for this, the oral scanner 100 can scan the impression body for the scan area to acquire the impression body scan data. (S103)

7A, when the impression material is solidified, the impression material is separated from the scan area SA, and the impression material B (FIG. 7B) including the depressed shape of the scan area SA ). At this time, raising the entire scan area may cause an unnecessary area (a dry part) to be lifted up to cause a loss, so that only the main area for designing the prosthesis can be raised. That is, the impression member B can be created by pulling only the area for designing the prosthesis and the adjacent area in the oral scan area.

Here, the impression material may be an irreversible and elastic impression material such as alginate, polycondensation type, addition polymerization type silicone or polyether.

Since the impression member B including such a depressed shape acquires a depressed shape with respect to the scan region in a contact manner, the shape of the scan region of the mouth can be accurately realized without being affected by the disturbing substance. In particular, the impression member B can accurately realize a protruding shape such as a margin line formed on a patient's mouth through a flap or the like.

Then, the user can obtain the impression (B) scan data by scanning the groove formed in the impression body B in a depressed shape with the oral scanner 100 in the digital pulling up manner, as shown in FIG. 7B.

At this time, as in the case of scanning the oral cavity, the oral scanner 100 may store the position information acquired through the position sensor matching with the impression material (B) scan data, and transmit the position information to the computing device.

The prosthesis design module 202 receiving the impression material (B) scan data can generate a three-dimensional impression model based on the impression material (B) scan data. (S104)

More specifically, prosthetic design module 202 may generate a three-dimensional impression model based on impression (B) scan data and positional information matched thereto.

Referring to FIG. 8, the impression member B includes grooves formed at an obtuse angle with respect to the oral cavity of the scan region, and the impression member (B) scan data is data obtained by scanning the grooves with the oral scanner 100 , And the three-dimensional impression model generated based on the three-dimensional impression model may have a negative shape with respect to the oral cavity. At this time, since the impression material is drawn into the margin M formed by the paper, the margin line can be accurately formed on the impression material.

Referring to FIG. 9, since the three-dimensional impression body model is a model created by scanning the edged impression body B in direct contact with the oral cavity, the margin line can be accurately scanned and modeled. In addition, It is possible to accurately scan and model the error area caused by the error. Thus, the prosthetic design module 202 can pre-extract and mark the margin line ML in the three-dimensional impression model.

Such a three-dimensional impression model may be a model for a prosthetic design area that requires precise implementation.

Next, the prosthetic design module 202 can convert the generated three-dimensional impression model to match the three-dimensional oral model 10.

More specifically, the prosthetic design module 202 can align the positions by rotating the generated three-dimensional impression body model to a position corresponding to the three-dimensional oral model 10. (S105)

Since the three-dimensional oral model 10 is a model generated by seeing the mouth shape as it is, when the scan region is the mandible, the oral cavity model with the teeth facing upward is formed, and when the scan region is the maxilla, Can be formed.

On the other hand, the three-dimensional impression body model is a model in which the impression body B pulled up from the oral shape is seen. Thus, when the scan region is the mandible, the impression body model with the teeth facing downward is formed. The impression body model facing upward can be formed. 10, the direction of the orientation of the mouth model (for example, the upright direction of the teeth) and the direction of the impression body model 12 can be made to coincide with each other by vertically inverting the three-dimensional impression body model 11.

In addition, at the time of acquiring the scan data, a deviation in the direction of the orientation between the impression model and the oral cavity model may occur depending on the position of the slope of the oral scanner 100 or the like.

Thus, the prosthetic design module 202 may rotate the three-dimensional impression model to match the three-dimensional impression model in the same direction as the three-dimensional oral model 10, based on the location information.

After the three-dimensional impression body model has aligned its orientation with respect to the three-dimensional oral model 10, the prosthodontic design module 202 may convert the impression model having a depressed shape to the mouth into an embossed shape. (S106)

As described above, the three-dimensional impression model has a depressed shape with respect to the oral cavity, so that it can be converted to have a relief shape matched to the mouth. For example, the three-dimensional impression model may have the same shape as the three-dimensional mouth model 10 through conversion of modeling a predetermined empty space of the three-dimensional impression model.

In another aspect, the conversion of the three-dimensional impression model may be understood to be such that the outer surface of the three-dimensional impression model becomes the inner surface, and the inner surface becomes the outer surface.

Once the conversion of the three-dimensional impression model has been completed, the prosthodontic design module 202 may match the three-dimensional impression model to the three-dimensional oral model 10. (S107)

More specifically, the prosthodontic design module 202 determines the area of the 3D model 10 in which the 3D impression body model 13 is modeled as shown in FIG. 12, and sets the 3D impression model 13 to 3 Dimensional mouth model 10 to align the three-dimensional impression model to the three-dimensional mouth model 10. [

At this time, the prosthodontic design module 202 can more accurately align the impression body model to the oral model by utilizing the position information of the impression body model and the oral model.

In addition, the prosthetic design module 202 extracts at least one inflection point from the three-dimensional mouth model 10, extracts the inflection points of the three-dimensional impression model 13, and matches the impression points of the three-dimensional impression model 13 to the mouth model .

Next, the prosthetic design module 202 can supplement the three-dimensional oral model 10 based on the three-dimensional impression body model 13.

More specifically, the prosthetic design module 202 can correct the error region of the three-dimensional oral model 10 with the three-dimensional impression model 13. For example, in the three-dimensional oral model 10, an error region that is not modeled by the obstructive material and can not be modeled can be replaced with the shape of the three-dimensional impression model 13.

In particular, the prosthetic design module 202 can overlap the margin line 13 of the three-dimensional impression body model 13 with the three-dimensional oral model 10. The prosthesis design module 202 can replace the margin line extracted from the three-dimensional impression model with the margin line ML of the three-dimensional mouth model 10 to model the correct margin line ML of the mouth have.

13, the first error region F1, the second error region F2 and the margin line ML of the three-dimensional oral model 10 are extracted from the three-dimensional impression model 13, Model, and correcting the error areas F1 and F2, a more accurate and precise three-dimensional oral model 10 can be generated.

The prosthesis design module 202 may then display the complemented three-dimensional oral model 10 on the display 240. [ (S108)

More specifically, the prosthodontic design module 202 can display a complementary three-dimensional oral model 10 to the user after synthesizing the three-dimensional impression model and the three-dimensional oral model 10.

The complementary three-dimensional oral model 10 is a model including both the digital lifting method and the contact-type method, and thus can be a result of accurately modeling the oral cavity of the patient.

The prosthetic design module 202 can then design the prosthesis based on the three-dimensional oral model 10 thus supplemented. (S109)

More specifically, the prosthetic design module 202 can provide a prosthetic design graphical interface (CAD) that allows a user to design a prosthesis based on the three-dimensional oral model 10.

For example, the prosthodontic design module 202 according to the embodiment may be implemented in a sequential step based on the oral image representing the three-dimensional oral model 10 and the oral information obtained by analyzing the three-dimensional oral model 10 Thus providing a prosthetic design interface that allows the prosthesis to be designed.

In detail, the prosthesis design interface allows the user to sequentially determine parameters for designing the prosthesis at each step, while providing appropriate oral information for each step, and synthesizes and corrects the oral image with the determined parameters and oral information, The prosthesis can be designed easily and effectively.

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

Finally, the prosthetic design module 202 synthesizes and displays the virtual prosthesis P designed in the three-dimensional oral model 10 as shown in Fig. 14, thereby confirming to the user whether the virtual prosthesis P is suitable for the patient's mouth , Prosthesis design can be completed.

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)

Generating a three-dimensional oral model based on the oral scan data;
Generating a three-dimensional impression model based on the impression material scan data;
Transforming the three-dimensional impression model to match the three-dimensional oral model;
Aligning the transformed three-dimensional impression model with the three-dimensional oral model;
Complementing the three-dimensional oral model based on the aligned three-dimensional impression model; And
And displaying the supplemented three-dimensional oral model
How to create a 3D oral model. The method according to claim 1,
Wherein the generating the three-dimensional oral model based on the oral scan data comprises:
Receiving the oral scan data and the matched position information from the digital impression method oral scanner,
And generating a three-dimensional oral model based on the oral-scan data and the positional information
How to create a 3D oral model. The method according to claim 1,
Wherein the step of generating a three-dimensional impression model based on the impression body scan data comprises:
Receiving the impression body scan data and the matched position information from a digital impression method oral scanner;
And generating a three-dimensional oral model based on the impression body scan data and the position information
How to create a 3D oral model. The method according to claim 1,
Wherein the step of converting the three-dimensional impression model to match the three-
Rotating the three-dimensional impression model,
Transforming the rotated three-dimensional impression model into an embossed shape
How to create a 3D oral model. 5. The method of claim 4,
Wherein rotating the three-dimensional impression model comprises:
A step of rotating the orientation direction of the three-dimensional impression body model so as to coincide with the orientation direction of the three-dimensional oral model
How to create a 3D oral model. 5. The method of claim 4,
The step of transforming the rotated three-dimensional impression model into a bony angle comprises:
Placing the outer surface of the three-dimensional impression body model on the inner surface, and locating the inner surface on the outer surface
How to create a 3D oral model. The method according to claim 1,
Wherein the step of supplementing the three-dimensional oral model based on the aligned three-
Modifying the error region of the three-dimensional oral model to the three-dimensional impression model
How to create a 3D oral model. The method according to claim 1,
Wherein the step of supplementing the three-dimensional oral model based on the aligned three-
And overlapping the margin line of the three-dimensional impression model with the three-dimensional oral model
How to create a 3D oral model. The method according to claim 1,
Designing the virtual prosthesis based on the complemented three-dimensional oral model, and synthesizing and displaying the designed virtual prosthesis on the three-dimensional oral model
How to create a 3D oral model. An oral scanner that scans the shape of the mouth in a digital impression manner; And
And a computing device for three-dimensionally modeling the oral cavity based on scan data obtained by scanning the shape of the oral cavity,
In the oral scanner,
The oral cavity scan data obtained by scanning the mouth cavity, and the impression body of the mouth to the impression body scan data to the computing device,
The computing device comprising:
Generating a three-dimensional oral cavity model based on the oral scan data and the impression body scan data,
And displaying the generated three-dimensional oral model
3D Oral Model Creation System.

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