Dental prosthesis design device, dental prosthesis manufacturing device, dental prosthesis manufacturing system, dental prosthesis design method, dental prosthesis manufacturing method, and dental prosthesis design program

Abstract

To provide a dental prosthesis design device, a dental prosthesis manufacturing device, a dental prosthesis manufacturing system, a dental prosthesis design method, a dental prosthesis manufacturing method, and a dental prosthesis design program that enable the design and / or manufacture of dental prostheses that are less prone to damage during machining. [Solution] The dental prosthesis design device 110 according to the present invention comprises a data acquisition unit 11 that acquires measurement data of the part to be prosthesis, a design data creation unit 12 that creates design data for a dental prosthesis based on the measurement data, a margin line extraction unit 13 that extracts the margin line of the dental prosthesis from the design data of the dental prosthesis, an outer perimeter line setting unit 14 that sets an outer perimeter line outside the margin line at a predetermined distance from the margin line, and a distance information output unit 15 that outputs distance information corresponding to the said distance.

Description

Technical Field

[0001] The present invention relates to a dental prosthesis design device, a dental prosthesis manufacturing device, a dental prosthesis manufacturing system, a dental prosthesis design method, a dental prosthesis manufacturing method, and a dental prosthesis design program.

Background Art

[0002] A method of designing and manufacturing a dental prosthesis using a CAD / CAM system is known. For example, Patent Document 1 discloses a dental prosthesis manufacturing system including a dental CAD that generates three-dimensional data of a dental prosthesis based on three-dimensional shape information of teeth, and a dental CAM that forms a dental prosthesis based on the data.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Depending on the material and shape of a dental prosthesis, thin portions may crack during machining, which may cause product defects. In particular, near the margin line, which is the boundary line with the abutment part, the strength is low and there is a problem that it is easy to chip. Therefore, there has been a demand for a method capable of efficiently manufacturing a dental prosthesis while suppressing such product defects.

[0005] The present invention has been made in view of such circumstances, and provides a dental prosthesis design device, a dental prosthesis manufacturing device, a dental prosthesis manufacturing system, a dental prosthesis design method, a dental prosthesis manufacturing method, and a dental prosthesis design program capable of designing and / or manufacturing a dental prosthesis that is difficult to be damaged during machining.

Means for Solving the Problems

[0006] The Disclosers, having diligently considered the matter in order to achieve the above objectives, have completed this disclosure, which includes the following forms. [1] A data acquisition unit that acquires measurement data of the prosthetic part, A design data creation unit that creates design data for dental prostheses based on the aforementioned measurement data, A margin line extraction unit extracts the margin line of the dental prosthesis from the design data of the dental prosthesis, An outer perimeter line setting section is provided outside the margin line, at a predetermined distance from the margin line, The system includes a distance information output unit that outputs distance information corresponding to the aforementioned distance. Dental prosthetic design device. [2] The distance determination unit further comprises determining the distance based on at least one of the material information or processing environment information of the dental prosthesis, [1] The dental prosthesis design device described above. [3] The distance optimization model generation unit further comprises a distance optimization model generation unit that uses the distance information, at least one of the material information or the processing environment information, and user evaluation as training data to generate a distance optimization model for optimizing the distance, The distance determination unit determines the distance by inputting at least one of the material information or the processing environment information into the distance optimization model. [2] The dental prosthesis design device described above. [4] A distance information acquisition unit that acquires the distance information from the dental prosthesis design device described in [1], A manufacturing unit that manufactures the dental prosthesis based on the design data and distance information, Dental prosthesis manufacturing device. [5] The system further comprises a processing condition determination unit that determines processing conditions based on at least one of the distance information, the material information of the dental prosthesis, or the processing environment information, The manufacturing unit manufactures the dental prosthesis based on the processing conditions. [4] The dental prosthesis manufacturing apparatus described above. [6] The system further comprises a processing condition optimization model generation unit that uses the distance information, the material information or at least one of the processing environment information, and the user's evaluation as training data to perform machine learning and generate a processing condition optimization model for optimizing the processing conditions, The processing condition determination unit determines the processing conditions by inputting at least one of the distance, material information, or processing environment information into the processing condition optimization model. [5] The dental prosthesis manufacturing apparatus described above. [7] A dental prosthesis design device as described in any of [1] to [3], A dental prosthesis manufacturing apparatus comprising one of the items described in [4] to [6], Dental prosthesis manufacturing system. [8] A step of obtaining measurement data of the prosthetic part, The steps include creating design data for a dental prosthesis based on the aforementioned measurement data, A step of extracting the margin line of the dental prosthesis from the design data of the dental prosthesis, Steps include setting an outer perimeter line outside the margin line, separated from the margin line by a predetermined distance, The system includes the step of outputting distance information corresponding to the aforementioned distance. Dental prosthesis design methods. [9] [8] The design data created by the dental prosthesis design method described above, The dental prosthesis is manufactured based on the distance information output by the dental prosthesis design method. Method for manufacturing dental prostheses.

[10] A step of obtaining measurement data of the prosthetic part, The steps include creating design data for a dental prosthesis based on the aforementioned measurement data, A step of extracting the margin line of the dental prosthesis from the design data of the dental prosthesis, Steps include setting an outer perimeter line outside the margin line, separated from the margin line by a predetermined distance, The steps include: causing a computer to output distance information corresponding to the aforementioned distance; Dental prosthesis design program.

Effect of the Invention

[0007] According to the present invention, it is possible to provide a dental prosthesis design device, a dental prosthesis manufacturing device, a dental prosthesis manufacturing system, a dental prosthesis design method, a dental prosthesis manufacturing method, and a dental prosthesis design program that can design and / or manufacture a dental prosthesis that is less likely to be damaged during machining.

Brief Description of the Drawings

[0008] [Figure 1] It is a block diagram of a dental prosthesis processing system [Figure 2] It is a schematic diagram of a manufactured dental prosthesis [Figure 3] It is a schematic diagram of the dental prosthesis in region A shown in FIG. 2 [Figure 4] It is a schematic diagram of the dental prosthesis shown in FIG. 3 after being morphologically modified by a dental technician [Figure 5] It is a block diagram of a dental prosthesis design device according to the first embodiment [Figure 6] It is a block diagram of a dental prosthesis design device according to the second embodiment [Figure 7] It is a block diagram of a dental prosthesis design device according to the third embodiment [Figure 8] It is a block diagram of a dental prosthesis manufacturing device according to the first embodiment [Figure 9] It is a block diagram of a dental prosthesis manufacturing device according to the second embodiment [Figure 10] It is a block diagram of a dental prosthesis manufacturing device according to the third embodiment

Mode for Carrying Out the Invention

[0009] Specific embodiments to which the present invention is applied will be described in detail below with reference to the drawings. Note that the following description and drawings have been simplified as appropriate for clarity. The right-handed xyz coordinate system shown in Figure 2 and other figures is for explaining the positional relationships of the components, with the positive z-axis pointing vertically upward. Furthermore, the "~" indicating a numerical range in this disclosure includes the values ​​written before and after it as the lower and upper limits.

[0010] [Dental prosthesis manufacturing system] Figure 1 is a block diagram of a dental prosthesis manufacturing system 1 according to this embodiment. As shown in Figure 1, the dental prosthesis manufacturing system 1 comprises a dental prosthesis design device 110 and a dental prosthesis manufacturing device 210. The dental prosthesis design device 110 and the dental prosthesis manufacturing device 210 are connected by wired or wireless communication, and are connected in a way that allows data to be transmitted from the dental prosthesis design device 110 to the dental prosthesis manufacturing device 210.

[0011] The dental prosthesis design device 110 is, for example, a CAD (Computer-Aided Design) device. The dental prosthesis design device 110 creates design data for the dental prosthesis based on measurement data of the part to be prosthised. Then, it extracts the contour line of the interface between the dental prosthesis and the part to be prosthised as the margin line of the dental prosthesis, and sets an outer circumference line outside the margin line at a predetermined distance. Finally, it outputs distance information corresponding to this distance to the dental prosthesis manufacturing device 210. In this specification, the term "prosthetic portion" refers to a part of a patient's teeth or oral cavity that is replaced by a dental prosthesis.

[0012] The dental prosthesis manufacturing apparatus 210 is, for example, a CAM (Computer-Aided Manufacturing) apparatus. The dental prosthesis manufacturing apparatus 210 acquires design data and distance information for the dental prosthesis from the dental prosthesis design apparatus 110, and manufactures the dental prosthesis based on the design data and distance information.

[0013] Figures 2 and 3 are schematic diagrams showing a dental prosthesis P manufactured by the dental prosthesis manufacturing system 1 when fitted onto the patient's gingiva G. Figure 2 is a perspective view of the dental prosthesis P, and Figure 3 is a cross-sectional view of the dental prosthesis P in region A shown in Figure 2.

[0014] In Figure 3, the first surface S1 shows the contour of the dental prosthesis designed based on measurement data of the prosthesis to be fitted. The edge of the first surface S1 is the margin line ML. On the other hand, the second surface S2 is a surface located outside the first surface S1 and shows the contour of the dental prosthesis manufactured by the dental prosthesis manufacturing system 1. The edge of the second surface S2 is the outer circumference line OL. The outer circumference line OL is a line provided by the dental prosthesis manufacturing system 1 outside the margin line ML at a predetermined distance L. Note that the distance L may be a constant value over the entire circumference of Figure 2, or it may be a different value.

[0015] The dental prosthesis manufacturing system 1 intentionally designs the area around the margin line ML, where the end is weak and prone to chipping, to be thicker than its original thickness. In other words, the dental prosthesis P designed in this way has sufficiently high strength around the margin line ML and is less likely to break during machining. As described above, the dental prosthesis manufacturing system 1 of this embodiment can design and manufacture dental prostheses that are less prone to breakage during machining.

[0016] Furthermore, the dental prosthesis P manufactured by the dental prosthesis manufacturing system 1 can be processed into a dental prosthesis P' of the appropriate shape by, for example, a dental technician cutting away a distance L near the margin line. Figure 4 is a cross-sectional view of the dental prosthesis P' after it has been cut by a dental technician. Since the dental prosthesis P' has the margin line ML as its contour, it fits well to the area to be prosthised.

[0017] In this way, by first manufacturing the dental prosthesis P using the dental prosthesis manufacturing system 1, and then processing it into the dental prosthesis P' by a dental technician, it is possible to efficiently manufacture high-precision dental prostheses.

[0018] Although the dental prosthesis manufacturing system 1 described here includes a dental prosthesis design device 110 and a dental prosthesis manufacturing device 210, these combinations may be modified as appropriate without impairing the effects of the present invention. For example, the dental prosthesis design device 110 may be replaced with the dental prosthesis design device 120, the dental prosthesis design device 130, or variations thereof, as described later. Similarly, the dental prosthesis manufacturing device 210 may be replaced with the dental prosthesis manufacturing device 220, the dental prosthesis manufacturing device 230, or variations thereof, as described later.

[0019] [Dental prosthetic design device] (First embodiment) Next, the details of the dental prosthesis design device 110 according to the first embodiment will be described using Figure 5. Figure 5 is a block diagram showing the configuration of the dental prosthesis design device 110 according to the first embodiment. As shown in Figure 5, the dental prosthesis design device 110 includes a data acquisition unit 11, a design data creation unit 12, a margin line extraction unit 13, an outer perimeter line setting unit 14, and a distance information output unit 15.

[0020] The data acquisition unit 11 is equipped with an input interface that allows data to be input from an external source. The data acquisition unit 11 acquires measurement data of the prosthetic part and passes it to the design data creation unit 12. The data acquisition unit 11 acquires information on the three-dimensional shape of the inside of the oral cavity, measured using, for example, a scanner, as three-dimensional point cloud data from an external computer (not shown). This allows the unit to acquire information on the shape of the prosthetic part to be replaced by the dental prosthesis.

[0021] The design data creation unit 12 creates design data for dental prostheses based on the measurement data acquired by the data acquisition unit 11. For example, the design data creation unit 12 designs the three-dimensional structure of a dental prosthesis from the difference between the three-dimensional point cloud data of the inside of the oral cavity acquired by the data acquisition unit 11 and predetermined three-dimensional shape data of teeth.

[0022] The margin line extraction unit 13 extracts margin lines of a dental prosthesis from the design data of the dental prosthesis designed by the design data creation unit 12. For example, the margin line extraction unit 13 extracts edge lines corresponding to the edges of the designed dental prosthesis as margin lines. In this case, the margin line extraction unit 13 may extract lines where two surfaces intersect at a predetermined angle (e.g., 50 degrees) or less as margin lines. Alternatively, the margin line extraction unit 13 may extract portions of the designed dental prosthesis with a thickness of a predetermined thickness (e.g., 1 mm) or less as margin lines. Furthermore, the margin line extraction unit 13 may record the extracted margin line information in the design data. For example, the margin line extraction unit 13 may label the parts of the three-dimensional structure shown in the design data that correspond to margin lines and overwrite the design data.

[0023] The outer perimeter line setting unit 14 sets the outer perimeter line outside the margin line extracted by the margin line extraction unit 13, at a predetermined distance from the margin line. For example, the outer perimeter line setting unit 14 sets the outer perimeter line at a predetermined distance (e.g., 0.1 mm) away from the margin line. This distance may be a constant value or may vary depending on the location. The outer perimeter line setting unit 14 may also record the information of the set outer perimeter line in the design data.

[0024] The distance information output unit 15 is equipped with an output IF for outputting data externally. The distance information output unit 15 outputs distance information between the margin line and the outer perimeter line. The distance information output unit 15 outputs distance information as information corresponding to the distance used by the outer perimeter line setting unit 14 when setting the outer perimeter line. For example, if the distance is a constant value regardless of the position, the distance information output unit 15 outputs that distance value as distance information. If the distance differs depending on the position, the distance information output unit 15 outputs a combination of the coordinates of each point on the margin line and the distance at that point as distance information.

[0025] As described above, the dental prosthesis design device 110 creates design data for a dental prosthesis that is thick near the margin line, and outputs distance information for the thickness to be added to the margin line. In this way, the dental prosthesis design device 110 can design a dental prosthesis that is less likely to break during machining.

[0026] Furthermore, the distance information output unit 15 may also output information other than the distance information between the margin line and the outer perimeter line. For example, the distance information output unit 15 may output the design data created by the design data creation unit 12, the margin line information extracted by the margin line extraction unit 13, or the outer perimeter line setting unit 14 along with the distance information.

[0027] (Second embodiment) Next, the details of the dental prosthesis design device 120 according to the second embodiment will be described using Figure 6. Figure 6 is a block diagram showing the configuration of the dental prosthesis design device 120 according to the second embodiment. As shown in Figure 6, the dental prosthesis design device 120 differs from the dental prosthesis design device 110 in that it further includes a distance determination unit 16.

[0028] In the second embodiment, the data acquisition unit 11 further acquires material information or processing environment information for the dental prosthesis. For example, the data acquisition unit 11 acquires information indicating the material of the dental prosthesis (i.e., information indicating the material of the block from which the dental prosthesis is milled) as material information. Alternatively, the data acquisition unit 11 acquires information representing the processing accuracy of the dental prosthesis processing apparatus as processing environment information. The material information and processing environment information may be acquired from the processing apparatus or by user input. The data acquisition unit 11 passes the acquired material information or processing environment information for the dental prosthesis to the distance determination unit 16.

[0029] The distance determination unit 16 determines the distance between the margin line and the outer circumference line based on at least one of the material information or processing environment information of the dental prosthesis acquired by the data acquisition unit 11. For example, if the material of the dental prosthesis is a crack-resistant material such as resin, the distance determination unit 16 sets the distance relatively shorter (for example, to 0.1 mm). On the other hand, if the material of the dental prosthesis is a crack-prone material such as zirconia, the distance determination unit 16 sets the distance relatively longer (for example, to 0.2 mm). Furthermore, if the accuracy of the processing device is lower than a predetermined level, the distance determination unit 16 sets the distance even longer. Alternatively, for areas within the margin line where the edge is particularly sharp (for example, areas where the angle between two surfaces intersects is 30° or less), the distance is partially set longer.

[0030] After determining the distance between the margin line and the outer perimeter line, the distance determination unit 16 passes the distance information corresponding to that distance to the outer perimeter line setting unit 14. The outer perimeter line setting unit 14 sets the outer perimeter line based on the distance determined by the distance determination unit 16. Therefore, the dental prosthesis design device 120 can set the distance of the outer perimeter line to a suitable position according to the material and processing conditions of the dental prosthesis.

[0031] (Third embodiment) Next, the details of the dental prosthesis design apparatus 130 according to the third embodiment will be described using Figure 7. Figure 7 is a block diagram showing the configuration of the dental prosthesis design apparatus 130 according to the third embodiment. As shown in Figure 7, the dental prosthesis design apparatus 130 differs from the dental prosthesis design apparatus 120 in that it further includes a storage device 17 and a distance optimization model generation unit 18.

[0032] In the third embodiment, the data acquisition unit 11 further acquires a user's evaluation of the distance information output by the distance information output unit 15. Here, the user's evaluation is, for example, an evaluation by a dental technician, and is an evaluation of whether the distance set between the margin line and the outer perimeter line was appropriate. The user's evaluation acquired by the data acquisition unit 11 is linked to the distance between the margin line and the outer perimeter line, and the information used to determine said distance, and then stored in the storage device 17.

[0033] The storage device 17 is a device for storing data. The storage device 17 consists of storage such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive). In this embodiment, the case in which the dental prosthesis design device 130 is equipped with a storage device 17 is described as an example, but the storage device 17 may be an external device. In this case, the dental prosthesis design device 130 does not need to be equipped with a storage device 17.

[0034] The distance optimization model generation unit 18 generates a distance optimization model for optimizing the parameters related to the determination of the distance, using a known machine learning algorithm such as a convolutional neural network (CNN). Specifically, the distance optimization model generation unit 18 uses the distance information output by the distance information output unit 15, at least one of the material information or processing environment information used to determine the distance, and the user's evaluation of the distance as training data to machine learn and generate a distance optimization model for optimizing the distance. The distance optimization model generated by the distance optimization model generation unit 18 is stored in the storage device 17. Known machine learning algorithms such as VGG19, Inception, V3, and ResNet can be used.

[0035] The distance determination unit 16 then determines the distance by inputting at least one of the material information or processing environment information into the distance optimization model. In this way, the dental prosthesis design device 130 can set the outer perimeter line to a position that suits the user's preferences and needs.

[0036] [Dental prosthesis manufacturing equipment] (First embodiment) Next, the details of the dental prosthesis manufacturing apparatus 210 according to the first embodiment will be described using Figure 8. Figure 8 is a block diagram showing the configuration of the dental prosthesis manufacturing apparatus 210 according to the first embodiment. As shown in Figure 8, the dental prosthesis manufacturing apparatus 210 includes a distance information acquisition unit 21 and a manufacturing unit 22.

[0037] The distance information acquisition unit 21 is equipped with an input interface that allows data to be input from an external source. The distance information acquisition unit 21 acquires distance information from the distance information output unit 15 of the dental prosthesis design device described above. The distance information acquisition unit 21 also acquires design data for the dental prosthesis that corresponds to the distance information. For example, the distance information acquisition unit 21 acquires design data for the dental prosthesis from the distance information output unit 15 of the dental prosthesis design device. The distance information acquisition unit 21 then transfers the acquired design data and distance information for the dental prosthesis to the manufacturing unit 22.

[0038] The manufacturing unit 22 manufactures dental prostheses by cutting dental blocks, etc. The manufacturing unit 22 manufactures dental prostheses based on the design data and distance information acquired by the distance information acquisition unit 21. For example, at the location corresponding to the margin line of the dental prosthesis, the manufacturing unit 22 sets an outer perimeter line outside the margin line by a predetermined distance indicated by the distance information, and manufactures the dental prosthesis so that the surface including the outer perimeter line becomes the contour.

[0039] For example, the manufacturing unit 22 manufactures dental prostheses with a contour defined on a surface outside the contour surface indicated by the design data (the first surface S1 in Figure 3) (the second surface S2 in Figure 3). In this way, the dental prosthesis manufacturing apparatus 210 can manufacture prostheses with a thicker material near the margin line. In other words, it can manufacture dental prostheses that are less prone to chipping during machining.

[0040] Furthermore, it is preferable that the distance between the contour surface indicated by the design data (first surface S1) and the contour surface of the manufactured dental prosthesis (second surface S2) be longest between the margin line and the outer circumference line, and decreases as it moves away from the margin line. In such a configuration, the strength near the margin line can be increased while bringing the overall shape closer to the design data.

[0041] (Second embodiment) Next, the details of the dental prosthesis manufacturing apparatus 220 according to the second embodiment will be described with reference to Figure 9. Figure 9 is a block diagram showing the configuration of the dental prosthesis manufacturing apparatus 220 according to the second embodiment. As shown in Figure 9, the dental prosthesis manufacturing apparatus 220 differs from the dental prosthesis manufacturing apparatus 210 in that it further includes a processing condition determination unit 23.

[0042] The machining condition determination unit 23 determines the machining conditions of the manufacturing unit 22, such as the cutting feed rate and spindle speed. For example, the machining condition determination unit 23 determines the machining conditions based on the distance information acquired by the distance information acquisition unit 21. Specifically, the machining condition determination unit 23 sets the cutting load lower when the distance is relatively short (for example, 0.1 mm or less). Alternatively, the machining condition determination unit 23 sets the cutting load higher when the distance is relatively long (for example, 0.2 mm or more). The manufacturing unit 22 then manufactures the dental prosthesis based on the processing conditions determined by the processing condition determination unit 23. The dental prosthesis manufacturing apparatus 220 having the above configuration can efficiently manufacture dental prostheses.

[0043] In the above example, the processing conditions are determined based on distance information acquired by the distance information acquisition unit 21, but other information may be used. For example, the processing condition determination unit 23 may determine the processing conditions based on the distance information mentioned above and at least one of the material information of the dental prosthesis or the processing environment information. Specifically, if the material of the dental prosthesis is a material that is resistant to cracking, such as resin, the processing condition determination unit 23 sets the cutting load higher. On the other hand, if the material of the dental prosthesis is a material that is prone to cracking, such as zirconia, the processing condition determination unit 23 sets the cutting load lower. Furthermore, if the accuracy of the processing device is lower than a predetermined level, the processing condition determination unit 23 sets the cutting load even lower. In this way, the dental prosthesis manufacturing apparatus 220 can manufacture dental prostheses under more suitable processing conditions. In the above example, information on the materials and processing environment of the dental prosthesis can be obtained, for example, by the distance information acquisition unit 21.

[0044] (Third embodiment) Next, the details of the dental prosthesis manufacturing apparatus 230 according to the third embodiment will be described using Figure 10. Figure 10 is a block diagram showing the configuration of the dental prosthesis manufacturing apparatus 230 according to the third embodiment. As shown in Figure 10, the dental prosthesis manufacturing apparatus 230 differs from the dental prosthesis manufacturing apparatus 220 in that it further includes a storage device 24 and a processing condition optimization model generation unit 25.

[0045] In the third embodiment, the distance information acquisition unit 21 further acquires user evaluations of the dental prosthesis manufactured by the manufacturing unit 22. Here, the user evaluation is, for example, an evaluation by a dental technician, and is an evaluation of whether the dental prosthesis was processed with accuracy. The user evaluation acquired by the distance information acquisition unit 21 is linked to the processing conditions and the information used to determine those processing conditions, and then stored in the storage device 24.

[0046] The storage device 24 is a device for storing data. The storage device 24 is composed of storage such as an HDD or SSD. In this embodiment, the case in which the dental prosthesis manufacturing apparatus 230 is equipped with a storage device 24 is described as an example, but the storage device 24 may be an external device. In this case, the dental prosthesis manufacturing apparatus 230 does not need to be equipped with a storage device 24.

[0047] The processing condition optimization model generation unit 25 generates a processing condition optimization model for optimizing parameters related to the determination of processing conditions, using known machine learning algorithms such as convolutional neural networks (CNNs). Specifically, the processing condition optimization model generation unit 25 uses the information used when determining the processing conditions—namely, distance information, at least one of material information or processing environment information, and user evaluations—as training data to perform machine learning and generate a processing condition optimization model for optimizing the processing conditions. The processing condition optimization model generated by the processing condition optimization model generation unit 25 is stored in the storage device 24. Known machine learning algorithms such as VGG19, Inception, V3, and ResNet can be used.

[0048] The processing condition determination unit 23 then determines the processing conditions by inputting at least one of the distance information, material information, or processing environment information mentioned above into the processing condition optimization model. In this way, the dental prosthesis manufacturing apparatus 230 can manufacture dental prostheses under more favorable processing conditions.

[0049] Each device according to the above-described embodiment is composed of hardware, software, or both, and may be composed of multiple pieces of hardware or software, or some or all of them may be composed of the same hardware or software. The functions (processing) of each device in the above-described embodiment may be implemented by a computer. For example, a program for performing the operations in the embodiment may be stored in memory, and each function may be implemented by executing the program stored in memory on a processor.

[0050] [Dental Prosthesis Design Methods] The dental prosthesis design method according to this embodiment includes the steps of: acquiring measurement data of the part to be prosthesis; creating design data for the dental prosthesis based on the measurement data; extracting the margin line of the dental prosthesis from the design data; setting an outer circumference line outside the margin line at a predetermined distance from the margin line; and outputting distance information corresponding to the said distance. By this method, it is possible to design a dental prosthesis that is less likely to be damaged during machining.

[0051] [Methods for Manufacturing Dental Prostheses] The dental prosthesis manufacturing method according to this embodiment manufactures a dental prosthesis based on the design data created by the dental prosthesis design method and the distance information output by the dental prosthesis design method. This method makes it possible to manufacture dental prostheses that are less likely to break during machining.

[0052] [Dental Prosthesis Design Program] The dental prosthesis design method according to this embodiment involves causing a computer to perform the following steps: acquiring measurement data of the part to be prosthesis; creating design data for the dental prosthesis based on the measurement data; extracting the margin line of the dental prosthesis from the design data; setting an outer circumference line outside the margin line at a predetermined distance from the margin line; and outputting distance information corresponding to that distance. With such a program, it is possible to design a dental prosthesis that is less likely to break during machining.

[0053] The program, when loaded into a computer, includes a set of instructions (or software code) for causing the computer to perform one or more of the functions described in the embodiments. The program may be stored on a non-temporary computer-readable medium or a physical storage medium. Examples, but not limited to, include random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD) or other memory technologies, CD-ROM, digital versatile disk (DVD), Blu-ray® disc or other optical disc storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices. The program may be transmitted over a temporary computer-readable medium or a communication medium. Examples, but not limited to, include temporary computer-readable medium or a communication medium that includes electrical, optical, acoustic or other forms of propagating signals.

[0054] Although the present invention has been specifically described above based on embodiments, it goes without saying that the present invention is not limited to the above embodiments and can be modified in various ways without departing from its essence. [Explanation of symbols]

[0055] 1. Dental prosthesis manufacturing system 11 Data Acquisition Unit 12 Design Data Creation Department 13. Margin line extraction section 14 Outer perimeter line setting section 15 Distance Information Output Unit 16 Distance determination unit 17 Storage device 18 Distance Optimization Model Generation Unit 21 Distance information acquisition section 22 Manufacturing Department 23 Processing Condition Determination Unit 24 Storage device 25 Processing Condition Optimization Model Generation Unit 110, 120, 130 Dental Prosthesis Design Devices 210, 210, 230 Dental prosthesis manufacturing device

Claims

1. A data acquisition unit that acquires measurement data of the prosthetic part, A design data creation unit that creates design data for dental prostheses based on the aforementioned measurement data, A margin line extraction unit extracts the margin line of the dental prosthesis from the aforementioned design data, An outer perimeter line setting section is provided outside the margin line, at a predetermined distance from the margin line, The system includes a distance information output unit that outputs distance information corresponding to the aforementioned distance. Dental prosthetic design device.

2. The system further includes a distance determination unit that determines the distance based on at least one of the material information or processing environment information of the dental prosthesis. The dental prosthesis design apparatus according to claim 1.

3. The system further comprises a distance optimization model generation unit that uses the distance information, at least one of the material information or the processing environment information, and user evaluations as training data to perform machine learning and generate a distance optimization model for optimizing the distance. The distance determination unit determines the distance by inputting at least one of the material information or the processing environment information into the distance optimization model. The dental prosthesis design apparatus according to claim 2.

4. A distance information acquisition unit that acquires the distance information from the dental prosthesis design apparatus described in claim 1, A manufacturing unit that manufactures the dental prosthesis based on the design data and distance information, Dental prosthesis manufacturing device.

5. The system further comprises a processing condition determination unit that determines processing conditions based on at least one of the distance information, the material information of the dental prosthesis, or the processing environment information. The manufacturing unit manufactures the dental prosthesis based on the processing conditions. The dental prosthesis manufacturing apparatus according to claim 4.

6. The system further comprises a processing condition optimization model generation unit that uses the distance information, at least one of the material information or the processing environment information, and user evaluations as training data to perform machine learning and generate a processing condition optimization model for optimizing the processing conditions. The processing condition determination unit determines the processing conditions by inputting at least one of the distance information, the material information, or the processing environment information into the processing condition optimization model. The dental prosthesis manufacturing apparatus according to claim 5.

7. A dental prosthesis design device according to any one of claims 1 to 3, A dental prosthesis manufacturing apparatus according to any one of claims 4 to 6, comprising: Dental prosthesis manufacturing system.

8. Steps include acquiring measurement data of the prosthetic part, The steps include creating design data for a dental prosthesis based on the aforementioned measurement data, A step of extracting the margin line of the dental prosthesis from the design data of the dental prosthesis, Steps include setting an outer perimeter line outside the margin line, separated from the margin line by a predetermined distance, The system includes the step of outputting distance information corresponding to the aforementioned distance. Dental prosthesis design methods.

9. The design data created by the dental prosthesis design method described in claim 8, The dental prosthesis is manufactured based on the distance information output by the dental prosthesis design method. Method for manufacturing dental prostheses.

10. Steps include acquiring measurement data of the prosthetic part, The steps include creating design data for a dental prosthesis based on the aforementioned measurement data, A step of extracting the margin line of the dental prosthesis from the design data of the dental prosthesis, Steps include setting an outer perimeter line outside the margin line, separated from the margin line by a predetermined distance, The steps include: causing a computer to output distance information corresponding to the aforementioned distance; Dental prosthesis design program.

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