CN107773316A - Artificial intelligence dentistry computer aided design system and method - Google Patents

Abstract

This application discloses an artificial intelligence dental computer-aided design system and method. The data input module is used to input the original three-dimensional data file in the patient's oral cavity; the computer-aided design module is used to calculate the three-dimensional data of the restoration body of the patient's teeth according to the original three-dimensional data file. file; the graphic display module is used to receive the original three-dimensional data file and the three-dimensional data file of the restoration and perform three-dimensional graphic display; the data output module is used to receive the three-dimensional data file of the restoration of the computer-aided design module and output it as the dental digital processing equipment required 3D data files. The embodiment of the present application uses artificial intelligence to complete the tooth design by computer, without manual operation, saving time and effort, can effectively reduce the time for operating the system, and improve the efficiency of users; The error of the prosthesis improves the comfort of the patient wearing the prosthesis.

Description

Artificial intelligence dental computer aided design system and method

technical field

The present disclosure generally relates to the field of dental digital design, and in particular relates to an artificial intelligence dental computer-aided design system and method.

Background technique

Because each person's tooth shape is different, every dental case in medicine requires a specially designed restoration. The form of the traditional dental prosthesis is the lost wax method. In this method, the doctor uses the impression material to take out the patient's oral model in the patient's oral cavity after the patient's lesioned teeth are ground away (as shown in Figure 1), and then passes The gypsum female mold is transformed into a male mold to produce a plaster model that is exactly the same as the patient's mouth. Then, a lost-wax method is used to make a wax model or plastic model of the shape of the restoration on the plaster model (obtained by melting wax or plastic, solidifying drop by drop, and then grinding and polishing), and then embedding the wax model with embedding material, high temperature After treatment, the wax melts to form a mold cavity in the shape of the restoration, and then the metal is cast into the mold cavity in the shape of the restoration using high-temperature centrifugation and other methods. After cooling, the cast metal restoration can be obtained, and finally the surface of the metal restoration is treated to complete the final shape of the restoration.

The traditional lost-wax method is time-consuming and difficult to obtain good occlusal contact with the occlusal surface. Slowly, digital production methods emerged.

CAD/CAM (Computer Aided Design, Computer Aided Design/Computer Aided Manufacturing, Computer Aided Manufacturing) is the main component of the computer integrated manufacturing system. This technology has been widely used in many fields such as industrial production, architectural design, and calculation of object quality characteristics. In 1971, French dentist Duret and several computer experts worked on the CAD/CAM system prototype. In 1985, the first all-ceramic crown was produced with this equipment. In 1988, the CAD/CAM system manufacturing equipment was commercialized and introduced into the fixed oral cavity. In the design and production of restorations, it has triggered a major technological revolution in the field of dental restorations. The revolution in production technology will inevitably lead to the rapid development of materials science. Bioceramics are used in the field of prosthodontics and have attracted people's attention for their good biocompatibility and excellent aesthetic performance. CAD/CAM technology has promoted the development of machinable ceramics. With the development of ceramics, several matching ceramic systems have appeared.

The CAD/CAM system uses various 3D scanning devices, uses photoelectric principles and digital processing systems to calculate the patient's oral cavity model through the scanner and computer, and forms a 3D model in the computer that is exactly the same as the patient's oral cavity model (as shown in the figure) 1). Alternative to the traditional way of taking "physical impressions" and "physical models" with impression materials. Make lesion model with wax type (or plastic type), change to use 3D graphic processing system, design lesion model on computer (as shown in Fig. 2). Cursor movement draws restoration graphics on the monitor screen. The restoration made by paraffin casting and filling technology is transformed into the command-controlled CNC machine tool milling out the restoration formed by graphic digital processing, and the patient can complete the restoration treatment in one visit. The Duret system from France, the Rekow system from the University of Minnesota, the Cicero system from the Netherlands, the Cerec system from Switzerland, the Procera system from Sweden, and the Lava system from 3M in the United States, etc. The techniques vary from system to system, as do the difficulty and speed of the operation, the materials used, and the accuracy and aesthetics of the restoration.

However, at present, there is a problem with the CAD/CAM system: after the doctor builds the 3D model of the patient's oral cavity in the computer, the design of the restoration is done manually, that is, the person operates the 3D graphics processing software to adjust the restoration to be designed. Various parameters and 3D parameters of the body, so that the final designed restoration is sufficient for the patient. And this process requires a lot of experience in dental design, and operators need to go through a lot of training before they can work.

Contents of the invention

In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an artificial intelligence dental computer-aided design system and method.

In the first aspect, an artificial intelligence dental computer-aided design system is provided, including a data input module, a computer-aided design module, a graphic display module, and a data output module,

The data input module is used to input the original three-dimensional data file in the oral cavity of the patient and transmit the original three-dimensional data file to the computer-aided design module and the graphic display module;

The computer-aided design module is used to calculate the three-dimensional data file of the restoration body of the patient's teeth according to the original three-dimensional data file and transmit the three-dimensional data file of the restoration body to the graphic display module and the data output module;

The graphic display module is used to receive the original three-dimensional data file of the data input module and the three-dimensional restoration data file of the computer-aided design module and perform three-dimensional graphic display;

The data output module is used to receive the three-dimensional data file of the prosthesis of the computer-aided design module and output the three-dimensional data file required by the dental digital processing equipment.

In the second aspect, an artificial intelligence dental computer-aided design method is provided,

Including steps: S1: input the original three-dimensional data file in the oral cavity of the patient, and display the original three-dimensional data file as a three-dimensional graph;

S2: Calculate the three-dimensional data file of the restoration of the patient's teeth according to the original three-dimensional data file, and display the three-dimensional data file of the restoration as a three-dimensional graphic;

S3: Outputting the three-dimensional data file of the prosthesis into a three-dimensional data file required by the dental digital processing equipment.

According to the technical solution provided by the embodiment of the present application, the tooth design is completed by the computer by using artificial intelligence, without manual operation, and the computer is used to replace the experienced personnel to do the tooth design, and the automatic calculation by the computer saves time and effort, and can effectively reduce the The time spent on the operating system improves the efficiency of the user; at the same time, it can effectively reduce the error in the design of the dental restoration by the operating system of different levels of operators, and improve the comfort of the patient wearing the restoration; and solve the original manual design of the restoration personnel training High cost and long training period.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a schematic structural diagram of an artificial intelligence dental computer-aided design system in an embodiment of the present invention;

Fig. 2 is the three-dimensional model of patient's oral cavity in the embodiment of the present invention;

Fig. 3 is the three-dimensional model after designing in the embodiment of the present invention;

Fig. 4 is a three-dimensional model of the prosthesis in the embodiment of the present invention.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Please refer to Fig. 1, the present embodiment provides a kind of artificial intelligence dental computer aided design system, comprises data input module, computer aided design module, graphic display module, data output module,

The data input module is used to input the original three-dimensional data file in the oral cavity of the patient and transmit the original three-dimensional data file to the computer-aided design module and the graphic display module;

The computer-aided design module is used to calculate the three-dimensional data file of the restoration body of the patient's teeth according to the original three-dimensional data file and transmit the three-dimensional data file of the restoration body to the graphic display module and the data output module;

The graphic display module is used to receive the original three-dimensional data file of the data input module and the three-dimensional restoration data file of the computer-aided design module and perform three-dimensional graphic display;

The data output module is used to receive the three-dimensional data file of the prosthesis of the computer-aided design module and output the three-dimensional data file required by the dental digital processing equipment.

In the system provided by this embodiment, the three-dimensional data of the patient's tooth restoration is calculated according to the original three-dimensional data in the patient's oral cavity. By using the computer instead of experienced personnel to do tooth design, no manual operation is required, and the computer automatically calculates, saving time and effort. On the one hand Effectively reduce the time for the operating system to design dental restorations and reduce the error of dental restorations, improve the efficiency of users and the comfort of patients wearing restorations; , the problem of long training period.

Further, the computer-aided design module includes a restoration volume calculation unit, which is used to determine the volume range and shape of the restoration according to the symmetrical teeth on the same gum bed of the affected tooth;

The prosthesis position adjustment unit is configured to determine the structural data of the prosthesis according to the tooth data on both sides of the position of the affected tooth. The computer-aided design module in this application firstly determines the shape and volume range of the prosthesis according to the condition of the patient's oral cavity, specifically by the teeth on the same gum of the affected tooth. The arrangement of teeth on the same gum can be regarded as a symmetrical structure, and the mutual The tooth structure is regarded as the same, and the volume range and shape of the restoration are determined according to the symmetrical teeth of the affected tooth, so as to ensure that the shape and volume of the restoration are suitable and more beautiful after installation;

Then other specific data of the restoration are determined based on the data of the teeth on both sides of the affected tooth, so that the obtained restoration data is more accurate and has a better matching degree with other teeth in the oral cavity.

Further, the "determining the structural data of the prosthesis according to the tooth data on both sides of the affected tooth" specifically includes: determining the X-axis length of the prosthetic, ensuring that there is a gap of 0.5 mm between the prosthetic and the teeth on both sides of the affected tooth; Determine the Z-axis length of the restoration, the Z-axis length of the restoration is the average length of the teeth on both sides of the affected tooth along the Z-axis; determine the Y-axis length of the restoration, and the Y-axis length of the restoration is the length of the teeth on both sides of the affected tooth along the Y-axis The average value; determine the A-axis and B-axis angles to ensure that the axial angle of the restoration matches the axial angle of the teeth on both sides of the affected tooth;

Wherein, the X-axis is the axis in which the teeth are arranged along the gum bed, the Y-axis is the tooth thickness direction axis, the Z-axis is the tooth height direction axis, the A-axis angle is the rotation angle around the X-axis, and the B-axis angle is the rotation angle around the X-axis. is the rotation angle around the Y axis.

The data of the restoration mainly includes its length, width, height, rotation angle, etc., which correspond to the length of the XYZ axis and the angle of the AB axis. The length of the prosthesis is determined according to the teeth on both sides of the affected tooth. When the prosthesis is installed at the position of the affected tooth, a certain gap needs to be left between the teeth on both sides. The average value, if the affected tooth is the most marginal tooth, the value of the affected tooth restoration is the same as that of its adjacent teeth.

Further, the original three-dimensional data file includes at least the following data: tooth size, axial direction, jaw curve, dental arch curvature, occlusion, minimum thickness, and connecting body strength.

The computer replication design module in this embodiment calculates the three-dimensional data file of the restoration through the original three-dimensional data file, which is calculated through various parameters in the patient's oral data, and the required parameters are not limited to the above-mentioned ones.

Further, the format of the original three-dimensional data file and the three-dimensional data file of the prosthesis are both in stl format.

Further, the original three-dimensional data file is obtained by scanning the patient's oral cavity or scanning an impression of the patient's oral cavity by a scanner.

In this embodiment, the original three-dimensional data file is obtained by scanning the patient's oral environment or the impression of the patient's oral cavity by a three-dimensional scanner, and the three-dimensional data file of the restoration is obtained by calculating the original three-dimensional data file, and the two three-dimensional data file formats are both in stl format , stl file is a file format used to represent triangular meshes in computer graphics application systems.

Further, the graphics display module includes a decoding unit and a display unit, the decoding unit is used to decode the received original 3D data files and restoration 3D data files to generate graphics and send the generated graphics to the display unit,

The display unit is used to display the received graphics.

The original 3D data file and the actual situation represented by the 3D data of the restoration are displayed through the graphic display module. Figure 2 shows the 3D situation of the patient’s oral cavity scanned. The 3D data of the restoration is obtained through calculation. The 3D situation of the oral cavity after restoration is as As shown in Figure 3, the three-dimensional structure of the restoration is shown in Figure 4, and the three-dimensional data of the restoration are sent to the dental digital processing equipment for restoration processing.

In this embodiment, the computer completes the tooth design by using artificial intelligence, without manual operation, and uses the computer to replace the experienced personnel to do the tooth design. The computer automatically calculates, saves time and effort, can effectively reduce the time of the operating system, and improve the user experience. the efficiency of the operator.

An embodiment of the present invention also provides an artificial intelligence dental computer replication design method, including steps: S1: input the original three-dimensional data file in the patient's oral cavity, and display the original three-dimensional data file as a three-dimensional graphic;

S2: Calculate the three-dimensional data file of the restoration of the patient's teeth according to the original three-dimensional data file, and display the three-dimensional data file of the restoration as a three-dimensional graphic;

S3: Outputting the three-dimensional data file of the restoration body into a three-dimensional data file required by the dental digital processing equipment.

In the method provided in this embodiment, the three-dimensional data file of the dental restoration is calculated according to the original three-dimensional data file in the patient's oral cavity, and three-dimensional display is performed on the two three-dimensional data files before and after, so that the user can intuitively see the oral situation and restoration of the patient before and after. The situation of the body, and the calculation process is realized by the computer, without manual operation, the computer automatically calculates, saving time and effort.

Further, the format of the original three-dimensional data file and the three-dimensional data file of the prosthesis are both in stl format.

Further, before step S1, it also includes: scanning the patient's oral cavity with a scanner or scanning the patient's oral cavity impression to obtain the original three-dimensional data file. In this embodiment, the original three-dimensional data file is obtained by scanning the patient's oral environment or the impression of the patient's oral cavity by a three-dimensional scanner, and the three-dimensional data file of the restoration is obtained by calculating the original three-dimensional data file, and the two three-dimensional data file formats are both in stl format , stl file is a file format used to represent triangular meshes in computer graphics application systems.

Further, step S2 includes: determining the volume range and shape of the prosthesis according to the symmetrical teeth on the same gum bed of the affected tooth, and determining the structural data of the prosthetic body according to the tooth data on both sides of the position of the affected tooth.

The shape and structure of the symmetrical teeth on the same gum bed of the affected tooth can be regarded as the same. Determine the shape and volume range of the restoration according to the symmetrical teeth of the affected tooth, and then determine the other structures of the restoration based on the data of the teeth on both sides of the affected tooth data.

Further, the "determining the position of the prosthesis according to the tooth data on both sides of the affected tooth" specifically includes: determining the X-axis position of the prosthetic, ensuring that there is a gap of 0.5 mm between the prosthetic and the teeth on both sides of the affected tooth; determining For the Z-axis position of the restoration, ensure that there is a 0.3mm gap between the restoration and the lower or upper tooth post of the affected tooth; determine the Y-axis position, and ensure that the centerline of the restoration along the X-axis coincides with the centerline of the teeth on both sides of the affected tooth ; Determine the A-axis and B-axis angles to ensure that the axial angle of the restoration is the same as the axial angle of the teeth on both sides of the affected tooth;

Wherein, the X-axis is the axis of the tooth horizontal arrangement direction, the Y-axis is the tooth thickness direction axis, the Z-axis is the tooth height direction axis, the A-axis angle is the rotation angle around the X-axis, and the B-axis angle is the rotation angle around the X-axis. Y-axis rotation angle.

The data of the restoration mainly includes its length, width, height, rotation angle, etc., which correspond to the length of the XYZ axis and the angle of the AB axis. The length of the prosthesis is determined according to the teeth on both sides of the affected tooth. When the prosthesis is installed at the position of the affected tooth, a certain gap needs to be left between the teeth on both sides. The average value, if the affected tooth is the most marginal tooth, the value of the affected tooth restoration is the same as that of its adjacent teeth.

Further, "displaying the original 3D data file as a 3D graphic" includes decoding the original 3D data file to generate a graphic and displaying the generated graphic.

Further, "displaying the three-dimensional data file of the prosthetic body as a three-dimensional graphic" includes decoding the three-dimensional data file of the prosthetic body to generate a graphic and displaying the generated graphic. In this embodiment, the graphics for three-dimensional display are all displayed, and the user can observe intuitively, and the above-mentioned three-dimensional data files are all decoded and displayed.

The method disclosed in this embodiment uses artificial intelligence to complete tooth design by computer, without manual operation, and uses computer to replace experienced personnel to do tooth design. Automatic calculation by computer saves time and effort, and can effectively reduce the time for operating the system. , improve the efficiency of the user; at the same time, it can effectively reduce the error of operating the operating system of different levels of operators to design dental restorations, and improve the comfort of patients wearing restorations; and solve the problem of high training costs for the original artificially designed restorations. long-term problems.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solution formed by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (10)

1. a kind of artificial intelligence dentistry computer aided design system, it is characterised in that including data input module, computer aided manufacturing Design module, image display module, data outputting module are helped,

The data input module be used for input the intraoral initial three-dimensional data file of patient and by the initial three-dimensional data text Part is transmitted to the CAD module and the image display module；

The CAD module is used for the dummy three that patient teeth is calculated according to the initial three-dimensional data file Dimension data file simultaneously transmits dummy three-dimensional data file to the image display module and the data outputting module；

The image display module is used to receive the initial three-dimensional data file of the data input module and the computer aided manufacturing Help the dummy three-dimensional data file of design module and carry out three dimensional graph display；

The data outputting module is used to receive the dummy three-dimensional data file of the CAD module and exported For the three-dimensional data file needed for dentistry digital processing equipment.

2. artificial intelligence dentistry computer aided design system according to claim 1, it is characterised in that the computer Computer Aided Design module includes dummy volume computing unit, for determining dummy body according to suffering from symmetrical tooth on the same gum of tooth Product scope and shape；

Dummy position adjustment unit, for determining the dummy structured data according to suffering from tooth position both sides tooth data.

3. artificial intelligence dentistry computer aided design system according to claim 2, it is characterised in that described " according to Suffer from tooth position both sides tooth data and determine the dummy structured data " be specially：Dummy X-axis length is determined, ensures to repair Body leaves 0.5mm gaps between the tooth of tooth both sides with suffering from respectively；Dummy Z axis length is determined, the dummy Z axis length is trouble Average value of the tooth both sides tooth along Z axis length；Dummy Y-axis length is determined, the dummy Y-axis length is to suffer from tooth both sides tooth Along the average value of Y-axis length；A axles and B axle angle are determined, ensures the axial angle of dummy and suffers from tooth both sides tooth axial angle Matching；

Wherein, the X-axis is the axle that tooth arranges along gum direction, and the Y-axis is thickness of tooth axis of orientation, and the Z axis is tooth Tooth height axis of orientation, the A shaft angles degree are around the X-axis anglec of rotation, and B axle angle is around the Y-axis anglec of rotation.

4. artificial intelligence dentistry computer aided design system according to claim 1, it is characterised in that described original three Dimension data file is obtained by the stamp in scanner scanning patient oral cavity or scanning patient oral cavity, the initial three-dimensional data text Part, the dummy three-dimensional data file format are stl forms.

5. artificial intelligence dentistry computer aided design system according to claim 1, it is characterised in that the figure shows Show that module includes decoding unit and display unit, the decoding unit is used for the initial three-dimensional data file received and repaiied Complex three-dimensional data file carries out decoding generation figure and sends the figure of generation to display unit,

The display unit is used to come out the figure shows received.

6. a kind of artificial intelligence dentistry computer-implemented method, it is characterised in that including step：S1：Input patient oral cavity Interior initial three-dimensional data file, and the initial three-dimensional data file is shown as 3-D graphic；

S2：The dummy three-dimensional data file of patient teeth is calculated according to the initial three-dimensional data file, and by the reparation Body three-dimensional data file is shown as 3-D graphic；

S3：By the defeated three-dimensional data file needed for dentistry digital processing equipment of the dummy three-dimensional data file.

7. artificial intelligence dentistry computer-implemented method according to claim 6, it is characterised in that before step S1 also Including：Initial three-dimensional data file is obtained with scanner scanning patient oral cavity or scanning patient's buccal impression.

8. artificial intelligence dentistry computer-implemented method according to claim 6, it is characterised in that step S2 bags Include：Dummy volume range and shape are determined according to symmetrical tooth on the same gum of tooth is suffered from, according to suffering from tooth position both sides tooth number According to the determination dummy structured data.

9. artificial intelligence dentistry computer-implemented method according to claim 8, it is characterised in that described " according to Suffer from tooth position both sides tooth data and determine the reparation body position " be specially：Dummy X-axis position is determined, ensures dummy point 0.5mm gaps are not left between the tooth of tooth both sides with suffering from；Determine dummy Z axis position, ensure dummy and suffer from the stake of tooth lower tooth or 0.3mm gaps are left between person's upper tooth stake；Y-axis position is determined, ensures center line of the dummy along X-axis with suffering from the tooth of tooth both sides Heart line overlaps；A axles and B axle angle are determined, ensures that the axial angle of dummy is identical with suffering from tooth both sides tooth axial angle；

Wherein, the X-axis is the horizontally arranged axis of orientation of tooth, and the Y-axis is thickness of tooth axis of orientation, and the Z axis is that tooth is high Axis of orientation is spent, the A shaft angles degree is around the X-axis anglec of rotation, and B axle angle is around the Y-axis anglec of rotation.

10. artificial intelligence dentistry computer-implemented method according to claim 6, it is characterised in that " by the original Beginning three-dimensional data file is shown as 3-D graphic " include the initial three-dimensional data file carrying out decoding generation figure and will be raw Into figure shows come out；

" the dummy three-dimensional data file is shown as into 3-D graphic " includes carrying out the dummy three-dimensional data file Decoding generation figure simultaneously comes out the figure shows of generation；

The initial three-dimensional data file, the dummy three-dimensional data file format are stl forms.