JP6874323B2 - Data generation program, data generation method, and information processing device - Google Patents

Description

The present invention relates to a data generation program, a data generation method, and an information processing apparatus.

Conventionally, teeth may be damaged or scraped for treatment due to tooth decay, periodontal disease, accidents, or the like. In such cases, dentures may be created to replace the damaged tooth. As a method of creating a denture, for example, there is a method of creating a denture by machining a ceramic material based on scanned tooth shape data.

As a prior art, a coating three-dimensional shape data is created so as to correspond to the three-dimensional shape data of the tooth to be treated obtained from the three-dimensional shape data of the oral cavity measured by an OCT (Optical Coherence Tomography) probe. There is. There is also a method of manufacturing a denture in which a ceramic mold material is mounted on a base or a root model via a ceramic paste material. Further, in the restoration of teeth, there is a dental filling restoration material kit for performing restoration having good color compatibility and less decrease in brightness.

International Publication No. 2011/102118 Japanese Unexamined Patent Publication No. 2000-139957 International Publication No. 2014/148293

However, with the prior art, it is difficult to create a denture that looks similar to a natural tooth. For example, a natural tooth has a two-color structure consisting of dentin (mamelon) and the enamel that covers it. However, in the method of machining a ceramic material to make a denture, the denture to be made becomes a monochromatic one made of one kind of ceramic and does not fit with a natural tooth.

In one aspect, the present invention aims to generate shape data representing mamelon morphology.

In one embodiment, the shape data of the tooth is acquired, the storage unit that stores the shape data representing the shape of the dentin of the tooth is referred to, and the dentin of a specific tooth is referred to with respect to the shape data of the tooth. The shape data is superimposed and displayed by adjusting the size, and the size of the shape data of the outer shape of a specific tooth is displayed with respect to the shape data of the tooth by referring to the storage unit that stores the shape data of the outer shape of the tooth. Is adjusted and superimposed, and the composite data of the tooth in which the shape data of the tooth, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the outer shape of the specific tooth after adjustment are associated with each other is displayed. A data generation program to generate is provided.

Further, in one embodiment, the shape data of the tooth is acquired, the two-dimensional shape data indicating the shape of the dentin of the tooth is extracted from the captured image obtained by imaging the tooth, and based on the extracted two-dimensional shape data, the data is used. The shape data of the dentin of the tooth is generated, and the shape data of the dentin of the generated tooth is superimposed and displayed on the shape data of the tooth by adjusting the size, and the shape data of the tooth is adjusted. A data generation program for generating synthetic data of a tooth associated with the shape data of the dentin of the later tooth is provided.

Further, in one embodiment, the tooth shape data is acquired, the storage unit that stores the tooth dentin shape data is referred to, and the dentin of a specific tooth is referred to according to the acquired tooth shape data. The size of the shape data of the above is adjusted, the shape data corresponding to the shape data of the tooth and the shape data of the dentin of the specific tooth after the adjustment is generated, and the generated shape data is converted into NC data. A data generator that converts and outputs is provided.

Further, in one embodiment, the shape data of the tooth is acquired, the storage unit that stores the shape data of the outer shape of the tooth is referred to, and the shape of the outer shape of a specific tooth is determined according to the acquired shape data of the tooth. The size of the data is adjusted, and based on the shape data of the outer shape of the specific tooth after the adjustment, the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment and the outer shape of the specific tooth after the adjustment are adjusted. A data generation program is provided that generates shape data having a boundary surface set inside a predetermined amount from the outer shape represented by the shape data of the above, converts the generated shape data into NC data, and outputs the data.

According to one aspect of the present invention, shape data representing the mamelon morphology can be generated.

FIG. 1 is an explanatory diagram showing an embodiment of a data generation method according to the first embodiment. FIG. 2 is a block diagram showing a hardware configuration example of the information processing apparatus 101 according to the first embodiment. FIG. 3 is an explanatory diagram showing an example of the stored contents of the crown DB 300. FIG. 4 is an explanatory diagram (No. 1) showing an example of the stored contents of the Mamelon DB 400. FIG. 5 is a block diagram showing a functional configuration example of the information processing apparatus 101 according to the first embodiment. FIG. 6A is an explanatory diagram (No. 1) showing an example of screen transition of the operation screen. FIG. 6B is an explanatory diagram (No. 2) showing an example of screen transition of the operation screen. FIG. 6C is an explanatory diagram (No. 3) showing an example of screen transition of the operation screen. FIG. 6D is an explanatory diagram (No. 4) showing an example of screen transition of the operation screen. FIG. 6E is an explanatory diagram (No. 5) showing an example of screen transition of the operation screen. FIG. 7 is a flowchart showing an example of the data generation processing procedure of the information processing apparatus 101 according to the first embodiment. FIG. 8 is an explanatory diagram (No. 2) showing an example of the stored contents of the Mamelon DB 400. FIG. 9 is an explanatory diagram showing an example of generating mamelon shape data M. FIG. 10 is a flowchart (No. 1) showing an example of the data generation processing procedure of the information processing apparatus 101 according to the second embodiment. FIG. 11 is a flowchart (No. 2) showing an example of the data generation processing procedure of the information processing apparatus 101 according to the second embodiment.

Hereinafter, embodiments of a data generation program, a data generation method, and an information processing apparatus according to the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is an explanatory diagram showing an embodiment of a data generation method according to the first embodiment. In FIG. 1, the information processing device 101 is a computer that generates shape data representing a mamelon morphology. The information processing device 101 is, for example, a PC (Personal Computer) in which a CAD / CAM (Computer aided design / Computer aided manufacturing) system is introduced, a tablet PC, or the like.

Here, the mamelon morphology is the morphology of the internal structure of the tooth called dentin mamelon. Shape data representing mamelon morphology is used to create dentures. A denture is an artificial tooth that replaces a damaged tooth. For example, dentures may be created to replace teeth damaged by tooth decay, periodontal disease, accidents, etc.

The denture is created, for example, by machining or casting a ceramic material based on 3D (Dimensions) scanned tooth shape data. The denture produced by this production method is a monochromatic one made of one kind of ceramic material. Natural teeth, on the other hand, are structures that contain dentin and the enamel that covers it. In addition, dentin has a yellowish color, but enamel has a whitish translucent color and is lighter in color than dentin. That is, natural teeth are not monochromatic. For this reason, monochromatic dentures made of one type of ceramic material do not fit into natural teeth.

It is also conceivable that a dental technician manually colors the denture to make it look more like a natural tooth. However, in order to match the shades of natural teeth and dentures, it is necessary to mix delicate colors, etc., and high skills and experience of dental technicians are required. In addition, it takes time and effort to manually color the denture.

Therefore, in the present embodiment, a data generation method for supporting the creation of a denture having an appearance close to that of a natural tooth by generating shape data representing the mameron morphology will be described. Hereinafter, a processing example of the information processing apparatus 101 will be described.

(1) The information processing device 101 acquires tooth shape data. Here, the tooth shape data is electronic data representing the three-dimensional shape of the tooth, and is, for example, three-dimensional point cloud data. The tooth shape data is generated by creating a model of the patient's tooth with, for example, plaster and scanning the model of the patient's tooth with a 3D scanner.

In the example of FIG. 1, it is assumed that the tooth shape data D1 is acquired. The tooth shape data D1 represents the three-dimensional shape of the patient's tooth that has been shaved for the treatment of tooth decay and periodontal disease. In FIG. 1, the portion with the reference numeral “D1” indicates the patient's tooth represented by the tooth shape data D1.

(2) The information processing device 101 refers to the first storage unit 110 and superimposes and displays the dentin shape data of the dentin of a specific tooth on the acquired tooth shape data by adjusting the size. To do. Here, the first storage unit 110 is a storage unit that stores dentin shape data representing the shape of the dentin of the tooth. Dentin of a tooth is mamelon, which is the internal structure of a tooth.

The dentin shape data is electronic data representing the three-dimensional shape of the tooth dentin, and is, for example, three-dimensional point cloud data. The dentin shape data includes, for example, finger-like structures. The dentin shape data is generated by, for example, creating a tooth dentin model with plaster or the like and scanning the tooth dentin model with a 3D scanner.

The first storage unit 110 may store, for example, dentin shape data representing the shape of the dentin of the type of tooth, corresponding to the type of tooth. Examples of tooth types include central incisors, lateral incisors, and canines. In this case, the specific tooth is, for example, a type of tooth specified from the acquired tooth shape data.

In the example of FIG. 1, the information processing apparatus 101 acquires dentin shape data D2 of the dentin of a specific tooth from the first storage unit 110, for example, based on the acquired tooth shape data D1. The specific tooth is, for example, a type of tooth specified from the tooth shape data D1. Then, the information processing device 101 adjusts the size of the dentin represented by the dentin shape data D2 based on the tooth shape data D1.

Specifically, for example, the information processing apparatus 101 scales the size of the dentin represented by the dentin shape data D2 while maintaining the three-dimensional shape according to the size of the tooth represented by the tooth shape data D1. (Enlarge or reduce). As a result, the size of the dentin represented by the dentin shape data D2 is automatically adjusted according to the size of the tooth represented by the tooth shape data D1.

Further, for example, when the information processing device 101 superimposes and displays the dentin shape data on the tooth shape data, the information processing device 101 displays the position of the center of gravity of the tooth shape data and the dentin shape data in alignment with each other. May be good. Further, the information processing apparatus 101 may display by aligning the positions of the upper end or the lower end while aligning the central axes of the tooth shape data and the dentin shape data.

In the example of FIG. 1, the dentin shape data D2 after adjusting the size is superimposed and displayed on the tooth shape data D1. Here, the tooth shape data D1 and the dentin shape data D2 after adjusting the size are displayed with the positions of the lower ends aligned while aligning the central axis. In FIG. 1, the portion with the reference numeral “D2” indicates the dentin represented by the dentin shape data D2 after adjusting the size.

(3) The information processing device 101 refers to the second storage unit 120, and superimposes and displays the outer shape data of the outer shape of a specific tooth on the shape data of the tooth by adjusting the size. Here, the second storage unit 120 is a storage unit that stores external shape data representing the external shape of the tooth. The outer shape of a tooth is the part of the enamel that covers the dentin (mamelon) of the tooth.

The outer shape data is electronic data representing the three-dimensional shape of the outer shape of the tooth, and is, for example, three-dimensional point cloud data. The outer shape data is generated by creating a model of the outer shape of the tooth with plaster or the like and scanning the model of the outer shape of the tooth with a 3D scanner. In the second storage unit 120, for example, the outer shape data representing the outer shape of the tooth of the type may be stored corresponding to the type of the tooth.

In the example of FIG. 1, the information processing apparatus 101 acquires the outer shape data D3 of the outer shape of a specific tooth from the second storage unit 120, for example, based on the acquired tooth shape data D1. The specific tooth is, for example, a type of tooth specified from the tooth shape data D1. Then, the information processing device 101 adjusts the size of the outer shape of a specific tooth represented by the outer shape data D3 based on the tooth shape data D1.

Specifically, for example, the information processing apparatus 101 maintains a three-dimensional shape of the outer shape of a specific tooth represented by the outer shape data D3 according to the tooth size represented by the tooth shape data D1. Scale as it is. As a result, the outer shape size of the specific tooth represented by the outer shape data D3 is automatically adjusted according to the tooth size represented by the tooth shape data D1.

Further, for example, when the external shape data is superimposed and displayed on the tooth shape data, the information processing device 101 may display the tooth shape data and the external shape data by aligning the positions of the centers of gravity. .. Further, the information processing device 101 may display by aligning the positions of the upper end or the lower end while aligning the central axes of the tooth shape data and the outer shape data.

In the example of FIG. 1, the outer shape data D3 after adjusting the size is superimposed and displayed on the tooth shape data D1. Here, the tooth shape data D1 and the external shape data D3 after adjusting the size are displayed with the positions of the lower ends aligned while aligning the central axis. In FIG. 1, the portion with the reference numeral “D3” indicates the outer shape of a specific tooth represented by the outer shape data D3 after adjusting the size.

(4) The information processing apparatus 101 associates the acquired tooth shape data with the dentin shape data of the dentin of the specific tooth after adjustment and the outer shape data of the outer shape of the specific tooth after adjustment. Generate synthetic data for teeth. Here, the synthetic tooth data is shape data having a two-layer structure representing the outer shape of the tooth and the mameron morphology whose size is adjusted according to the size of the patient's tooth.

In the example of FIG. 1, the information processing apparatus 101 synthesizes a tooth in which the tooth shape data D1, the dentin shape data D2 after adjusting the size, and the outer shape data D3 after adjusting the size are associated with each other. Generate data D4. In the tooth composite data D4, for example, the relative positional relationship between the dentin shape data D2 and the outer shape data D3 with respect to the tooth shape data D1 is recorded.

As described above, according to the information processing apparatus 101, it is possible to generate shape data representing the mamelon morphology of the tooth, and it is possible to support the creation of a denture having an appearance close to that of a natural tooth. In the example of FIG. 1, a two-layered tooth composite data D4 representing a tooth outline and a mamelon morphology adjusted in size according to the size of the patient's tooth that has been shaved for treatment is generated. Can be done.

Further, for example, the generated synthetic data D4 of the teeth can be displayed on a display (for example, the display 206 shown in FIG. 2 described later), and fine parts can be manually adjusted. At this time, the dentin shape data D2 and the outer shape data D3 whose size is automatically adjusted are displayed with respect to the tooth shape data D1 so that the positions of the lower ends are aligned with each other while aligning the central axis. The work becomes easier, and the number of user operations required for adjustment work can be reduced.

Further, as a method for creating a denture using synthetic tooth data, for example, a casting method such as a lost wax production method or machining can be used. For example, when making a denture by the lost wax manufacturing method, the wax (wax) is scraped to make a prototype of the mameron form, and after wrapping it with plaster etc., the wax inside is melted to make a cavity, and the cavity is filled. By pouring a melted ceramic material or the like, a denture of the dentin portion can be created. In the same way, on the created dentin part of the denture, scrape the wax to make a prototype of the outer shape of the tooth, wrap it with plaster etc., melt the wax inside to make a cavity, and dissolve it in the cavity. By pouring a ceramic material or the like, it is possible to create a denture in which an enamel portion is formed on the dentin portion. At this time, by using a material different from the ceramic material used for the dentin portion, it is finally possible to create a denture having a two-color structure like a natural tooth. When creating a denture by machining, the denture part denture and the enamel part denture are created by machining (cutting, etc.) using different ceramic materials based on the synthetic data of the tooth. This makes it possible to create a denture with a two-color structure like a natural tooth.

(Example of hardware configuration of information processing device 101)
Next, a hardware configuration example of the information processing device 101 will be described.

FIG. 2 is a block diagram showing a hardware configuration example of the information processing apparatus 101 according to the first embodiment. In FIG. 2, the information processing device 101 includes a CPU (Central Processing Unit) 201, a memory 202, a disk drive 203, a disk 204, an I / F (Interface) 205, a display 206, an input device 207, and the like. Has. Further, each component is connected by a bus 200.

Here, the CPU 201 controls the entire information processing device 101. The memory 202 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), a flash ROM, and the like. Specifically, for example, a flash ROM or ROM stores various programs, and the RAM is used as a work area of the CPU 201. The program stored in the memory 202 is loaded into the CPU 201 to cause the CPU 201 to execute the coded process.

The disk drive 203 controls data read / write to the disk 204 according to the control of the CPU 201. The disk 204 stores the data written under the control of the disk drive 203. Examples of the disk 204 include a magnetic disk and an optical disk.

The I / F 205 is connected to the network 210 through a communication line, and is connected to another device via the network 210. Then, the I / F 205 controls the interface between the network 210 and the inside of the own device, and controls the input / output of data from other devices. The network 210 is, for example, a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, or the like.

The display 206 displays data such as documents, images, and functional information, as well as cursors, icons, and toolboxes. As the display 206, for example, a liquid crystal display, a CRT (Cathode Ray Tube), or the like can be adopted.

The input device 207 has keys for inputting characters, numbers, various instructions, and the like, and inputs data. The input device 207 may be a keyboard, a mouse, or the like, or may be a touch panel type input pad, a numeric keypad, or the like.

(Memory contents of Crown DB300)
Next, the stored contents of the crown DB 300 used by the information processing apparatus 101 will be described. The crown DB 300 is stored in a storage device such as the memory 202 or the disk 204 shown in FIG. 2, for example. The second storage unit 120 shown in FIG. 1 corresponds to, for example, the crown DB 300.

FIG. 3 is an explanatory diagram showing an example of the stored contents of the crown DB 300. In FIG. 3, the crown DB 300 stores crown template information (for example, crown template information 300-1, 300-2) represented by associating a number with a plurality of crown shape data.

The number is a number that identifies a tooth. Teeth are numbered according to the location (position) of the tooth. The crown shape data is electronic data representing the three-dimensional shape of the outer shape of the tooth. For example, the crown template information 300-1 includes three crown shape data C1-1, C1-2, C1-3 representing the outer shape of the tooth of the number "t1".

The crown shape data is generated by, for example, creating a model that imitates the outer shape of some typical teeth with plaster or the like for each number of teeth, and scanning the model of the outer shape of the tooth with a 3D scanner. can do. The crown shape data may be generated for all human teeth, for example, or may be generated for some teeth.

(Memory contents of Mameron DB400)
Next, the stored contents of the Mamelon DB 400 used by the information processing apparatus 101 will be described. The Mamelon DB 400 is stored in a storage device such as the memory 202 or the disk 204 shown in FIG. 2, for example. The first storage unit 110 shown in FIG. 1 corresponds to, for example, the Mamelon DB 400.

FIG. 4 is an explanatory diagram (No. 1) showing an example of the stored contents of the Mamelon DB 400. In FIG. 4, the mamelon DB 400 stores mamelon template information (for example, mamelon template information 400-1, 400-2) representing the numbers and a plurality of mamelon shape data in association with each other.

The number is a number that identifies a tooth. Mamelon shape data is electronic data representing the three-dimensional shape of tooth dentin. For example, the mamelon template information 400-1 includes three mamelon shape data M1-1, M1-2, M1-3 representing the dentin of the tooth of number "t1".

For the mamelon shape data, for example, for each number of teeth, create a model that imitates the dentin of some typical teeth with plaster or the like, and scan the model of the dentin of the tooth with a 3D scanner. Can be generated by. The mamelon shape data may be generated for all human teeth, for example, or may be generated for some teeth.

(Example of functional configuration of information processing device 101)
FIG. 5 is a block diagram showing a functional configuration example of the information processing apparatus 101 according to the first embodiment. In FIG. 5, the information processing device 101 has a configuration including an acquisition unit 501, an adjustment unit 502, a display control unit 503, a generation unit 504, and an output unit 505. The acquisition units 501 to output units 505 are functions that serve as control units. Specifically, for example, by causing the CPU 201 to execute a program stored in a storage device such as the memory 202 and the disk 204 shown in FIG. Alternatively, the function is realized by I / F205. The processing result of each functional unit is stored in a storage device such as a memory 202 or a disk 204, for example.

The acquisition unit 501 acquires the tooth shape data T. Here, the tooth shape data T is electronic data representing the three-dimensional shape of the tooth for which the denture is to be created, and is, for example, three-dimensional point cloud data. The tooth shape data T includes, for example, a number that identifies a tooth to be created as a denture. The tooth shape data T may include information representing the three-dimensional shape of a tooth other than the tooth for which the denture is to be created.

Specifically, for example, the acquisition unit 501 may acquire the tooth shape data T by the user's operation input using the input device 207 shown in FIG. The user is, for example, a dental technician. Further, the acquisition unit 501 may acquire the tooth shape data T by receiving the tooth shape data T from another computer by, for example, the I / F 205.

The adjusting unit 502 adjusts the size of the crown shape data C representing the three-dimensional shape of the outer shape of a specific tooth with respect to the acquired tooth shape data T with reference to the crown DB 300 shown in FIG. And correspond. Specifically, for example, first, the adjusting unit 502 acquires any crown shape data C corresponding to the number of the tooth to be created of the denture included in the acquired tooth shape data T from the crown DB 300. ..

For example, if the tooth for which the denture is to be created is the "upper right middle incisor", the adjusting unit 502 acquires the crown shape data C corresponding to the number of the "upper right middle incisor" from the crown DB 300. When there are a plurality of crown shape data corresponding to the tooth numbers, which crown shape data to acquire may be set in advance. Further, for example, one of the crown shape data may be selected from a plurality of crown shape data corresponding to the tooth numbers by the operation input of the user using the input device 207.

Next, the adjusting unit 502 adjusts the size of the outer shape of a specific tooth represented by the acquired crown shape data C based on the tooth shape data T. Specifically, for example, the adjusting unit 502 scales the size of the outer shape of a specific tooth represented by the crown shape data C according to the size of the tooth represented by the tooth shape data T.

More specifically, for example, in the adjusting unit 502, the outer circumference of the root portion of the specific tooth represented by the crown shape data C is set to a predetermined magnification of the outer circumference of the root portion of the tooth represented by the tooth shape data T. , The size may be adjusted. The predetermined magnification can be set to any value greater than 1. Further, the adjusting unit 502 adjusts the size so that the size of the root portion of the specific tooth represented by the crown shape data C is several millimeters larger than the size of the root portion of the tooth represented by the tooth shape data T. You may decide to do it.

Then, the adjusting unit 502 records the tooth shape data T and the crown shape data C after adjusting the size in association with each other. At this time, the adjusting unit 502 may determine and record the relative positional relationship of the crown shape data C after adjusting the size with respect to the tooth shape data T, for example.

More specifically, for example, when the adjusting unit 502 associates the crown shape data C after adjusting the size with the tooth shape data T, the center of gravity of the tooth shape data T and the crown shape data C. It may be recorded by aligning the positions of. Further, the adjusting unit 502 may record by aligning the positions of the upper end or the lower end while aligning the central axes of the tooth shape data T and the crown shape data C. The central axis is a vertical axis passing through the center of an object (for example, the center of gravity).

Further, the adjusting unit 502 increases the size of the mamelon shape data M representing the three-dimensional shape of the dentin of a specific tooth with respect to the acquired tooth shape data T with reference to the mamelon DB 400 shown in FIG. Adjust and associate. Specifically, for example, first, the adjusting unit 502 acquires any mameron shape data M corresponding to the number of the tooth to be created of the denture included in the acquired tooth shape data T from the mameron DB 400. ..

For example, if the tooth for which the denture is to be created is the "upper right central incisor", the adjusting unit 502 acquires the mameron shape data M corresponding to the number of the "upper right central incisor" from the mamelon DB 400. When there are a plurality of mameron shape data corresponding to the tooth numbers, which mameron shape data to be acquired may be set in advance. Further, for example, one of the mamelon shape data may be selected from a plurality of mameron shape data corresponding to the tooth numbers by the user's operation input using the input device 207.

Next, the adjusting unit 502 adjusts the size of the dentin of a specific tooth represented by the acquired mamelon shape data M based on the tooth shape data T. Specifically, for example, the adjusting unit 502 expands or contracts the size of the dentin of a specific tooth represented by the mameron shape data M according to the tooth size represented by the tooth shape data D1.

More specifically, for example, in the adjusting unit 502, the outer circumference of the root portion of the dentin represented by the mamelon shape data M becomes a predetermined magnification of the outer circumference of the root portion of the tooth represented by the tooth shape data T. The size may be adjusted. The predetermined magnification can be set to any value greater than 1. Further, the adjusting unit 502 adjusts the size so that the size of the root portion of the dentin represented by the mamelon shape data M is several millimeters larger than the size of the root portion of the tooth represented by the tooth shape data T. You may decide.

Then, the adjusting unit 502 records the tooth shape data T and the mamelon shape data M whose size has been adjusted in association with each other. At this time, the adjusting unit 502 may determine and record the relative positional relationship of the mamelon shape data M after adjusting the size with respect to the tooth shape data T, for example.

More specifically, for example, when the adjusting unit 502 associates the tooth shape data T with the size-adjusted mameron shape data M, the center of gravity of the tooth shape data T and the mameron shape data M is associated with the tooth shape data T. It may be recorded by aligning the positions of. Further, the adjusting unit 502 may record by aligning the positions of the upper end or the lower end while aligning the central axes of the tooth shape data T and the mameron shape data M.

The display control unit 503 controls the tooth shape data T to display the adjusted crown shape data C in an adjustable manner. Specifically, for example, the display control unit 503 displays an operation screen in which at least one of the position, size, and shape of the crown shape data C with respect to the tooth shape data T can be adjusted with respect to the display 206 shown in FIG. Display on.

At this time, the display control unit 503 determines, for example, the arrangement position of the crown shape data C according to the relative positional relationship of the crown shape data C recorded with respect to the tooth shape data T, and the tooth shape data T. The crown shape data C may be superimposed and displayed on the product. The position, size, and shape of the crown shape data C on the operation screen are adjusted by, for example, a user's operation input using the input device 207.

As a result, the user can arbitrarily change the position, size, and shape of the crown shape data C whose size is automatically adjusted with respect to the tooth shape data T. Further, when displaying the crown shape data C, the tooth shape data T and the position of the center of gravity are displayed together, so that the correspondence between the tooth shape data T and the crown shape data C can be displayed in an easy-to-understand manner. it can.

Further, the display control unit 503 may transparently display the crown shape data C, for example, when the crown shape data C is superimposed and displayed on the tooth shape data T. Here, the transparent display is to increase the transparency other than the outline of the target figure on the screen so that the figure behind the target figure (the figure in the lower layer) can be seen. This makes it easier for the user to confirm the position and size of the tooth shape data T that is superimposed and displayed on the crown shape data C, and thus makes it easier to adjust the position and size of the crown shape data C.

When the position and size of the crown shape data C are adjusted on the operation screen, the adjusting unit 502 transmits the adjusted crown shape data C adjusted on the operation screen to the tooth shape data T. Correspond. A screen example of an operation screen in which the position and size of the crown shape data C can be adjusted will be described later with reference to FIG. 6A.

Further, the display control unit 503 controls the tooth shape data T to display the size-adjusted mameron shape data M in an adjustable manner. Specifically, for example, the display control unit 503 displays an operation screen on the display 206 in which at least one of the position, size, and shape of the mamelon shape data M with respect to the tooth shape data T can be adjusted.

At this time, the display control unit 503 determines, for example, the arrangement position of the mamelon shape data M according to the relative positional relationship of the mamelon shape data M recorded with respect to the tooth shape data T, and the tooth shape data. The mamelon shape data M may be superimposed and displayed on T. The position, size, and shape of the mamelon shape data M on the operation screen are adjusted by, for example, a user's operation input using the input device 207.

As a result, the user can arbitrarily change the position, size, and shape of the mamelon shape data M whose size is automatically adjusted with respect to the tooth shape data T. Further, when displaying the mamelon shape data M, the tooth shape data T and the position of the center of gravity are displayed together, so that the correspondence between the tooth shape data T and the mamelon shape data M can be displayed in an easy-to-understand manner. it can.

Further, the display control unit 503 may transparently display the mamelon shape data M when, for example, the mamelon shape data M is superimposed and displayed on the tooth shape data T. This makes it easier for the user to confirm the position and size of the tooth shape data T superimposed on the mamelon shape data M, and thus makes it easier to adjust the position and size of the mamelon shape data M.

When the position and size of the mamelon shape data M are adjusted on the operation screen, the adjusting unit 502 sends the adjusted mamelon shape data M adjusted on the operation screen to the tooth shape data T. Correspond. Further, a screen example of the operation screen in which the position and size of the mamelon shape data M can be adjusted will be described later with reference to FIGS. 6B to 6D.

The generation unit 504 generates a tooth composite data SD in which the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C are associated with each other. Here, the tooth synthetic data SD is shape data having a two-layer structure in which the shape of the dentin and the shape of the outer shape of the tooth to be created for the denture are expressed.

That is, the tooth composite data SD includes, for example, the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C, and the adjusted mameron shape with respect to the tooth shape data T. This is information that defines the relative positional relationship between the data M and the adjusted crown shape data C.

The output unit 505 outputs the generated synthetic data SD of the tooth. Examples of the output format of the output unit 505 include storage in a storage device such as a memory 202 and a disk 204, transmission to an external device by the I / F 205, and display on the display 206.

Further, the generation unit 504 may generate the mamelon shape data M'corresponding to the tooth shape data T and the adjusted mamelon shape data M. Specifically, for example, when the generation unit 504 combines the tooth shape data T and the adjusted mamelon shape data M, the tooth shape data of the dentin represented by the adjusted mamelon shape data M is obtained. Mamelon shape data M'representing the three-dimensional shape of dentin excluding the portion overlapping with the tooth represented by T is generated.

Here, the tooth shape data T represents the three-dimensional shape of the damaged tooth. Therefore, the mamelon shape data M'is electronic data representing the three-dimensional shape of the dentin excluding the portion of the patient's tooth (for example, the shaved tooth) from the dentin represented by the adjusted mamelon shape data M.

Further, the generation unit 504 may convert the generated mameron shape data M'to NC (Numerical Control) data. Here, the NC data is numerical data that specifies a tool to be used for controlling the operation of the NC machine tool, a coordinate position where the tool moves in a three-dimensional coordinate system, a speed, and the like.

That is, the generation unit 504 machines a ceramic material or the like with an NC machine tool and converts it into NC data for creating a denture of the dentin portion (mamelon form portion) represented by the mamelon shape data M'. In this case, the output unit 505 may output NC data obtained by converting the mamelon shape data M'.

Thereby, the NC machine tool can create a denture portion of the dentin portion excluding the portion of the remaining patient's tooth (for example, a shaved tooth). At this time, by using a ceramic material different from the ceramic material used for the enamel portion of the denture, it is finally possible to create a denture having a two-color structure like a natural tooth. It should be noted that the denture of the dentin portion may be created by a casting method such as a lost wax production method based on the mamelon shape data M'.

Further, the generation unit 504 is a boundary surface set inward by a predetermined amount from the outer shape represented by the adjusted crown shape data C and the outer shape represented by the adjusted crown shape data C based on the adjusted crown shape data C. Crown shape data C'with and may be generated. The predetermined amount can be arbitrarily set.

For example, the predetermined amount is set to the thickness of the tooth enamel, that is, about several millimeters corresponding to the distance from the incisal edge of the tooth to the mamelon. In addition, the actual mameron morphology of teeth is often a mountain-like raised shape. Therefore, for example, the generation unit 504 may change a predetermined amount according to the position so that some raised shapes are expressed on the boundary surface.

In other words, the boundary surface set inward by a predetermined amount from the outer shape represented by the adjusted crown shape data C is the boundary surface with the dentin. Therefore, the crown shape data C'is electronic data representing the three-dimensional shape of the enamel excluding the dentin portion from the outer shape represented by the adjusted crown shape data C.

Further, the generation unit 504 may convert the generated crown shape data C'to NC data. That is, the generation unit 504 machines a ceramic material or the like with an NC machine tool and converts it into NC data for creating an artificial tooth of an enamel portion represented by crown shape data C'. In this case, the output unit 505 may output NC data obtained by converting the crown shape data C'.

This allows the NC machine tool to create a denture for the enamel portion of the patient's tooth. At this time, by using a ceramic material different from the ceramic material used for the dentin portion of the denture, it is finally possible to create a denture having a two-color structure like a natural tooth. The denture of the enamel portion may be prepared by a casting method such as a lost wax production method based on the crown shape data C'.

The information processing device 101 may be in a form of generating at least one of the above-mentioned synthetic tooth data SD, mameron shape data M'and crown shape data C', for example.

(Example of screen transition of operation screen)
Next, an example of screen transition of the operation screen displayed on the display 206 when the composite data SD of the teeth is generated will be described with reference to FIGS. 6A to 6E.

6A to 6E are explanatory views showing an example of screen transition of the operation screen. In (6-1) of FIG. 6A, tooth shape data T1 and T2 are displayed on the operation screen OS1. The tooth shape data T1 and T2 represent the three-dimensional shape of the tooth for which the denture is to be created. Here, the teeth to be created as dentures are the upper left and right central incisors that have been shaved for the treatment of tooth decay and periodontal disease. In addition, in FIG. 6A, other teeth below the tooth for which the denture is to be created are also displayed.

On the operation screen OS1, for example, when the next button B1 is clicked by the user's operation input using the input device 207, as shown in (6-2), the tooth shape data T1 and T2 are larger than each other. The crown shape data C adjusted for is displayed. When the back button B2 is clicked on the operation screen OS1, the patient can be returned to the previous operation screen, and the patient can be selected and the tooth shape data T can be acquired again.

In (6-2) of FIG. 6A, the crown shape data Ca and Cb whose sizes are adjusted for each of the tooth shape data T1 and T2 are displayed on the operation screen OS2. The crown shape data Ca is the crown shape data C corresponding to the tooth number included in the tooth shape data T1. Further, the crown shape data Cb is the crown shape data C corresponding to the tooth number included in the tooth shape data T2.

In addition, there may be a plurality of crown shape data C corresponding to the tooth numbers included in the tooth shape data T1 and T2. In this case, the information processing device 101 may pop up an operation screen on which any crown shape data C can be selected from a plurality of crown shape data Cs, for example, by a user's operation input.

On the operation screen OS2, when the crown shape data Ca, Cb is clicked by the user's operation input, the position, size, and shape of the crown shape data Ca, Cb can be adjusted. At this time, the viewpoint can be changed, and the position, size, and shape can be adjusted while checking the three-dimensional shape of the outer shape of the tooth represented by each crown shape data Ca and Cb from various angles.

Further, in the example of (6-2), the crown shape data Ca and Cb are transparently displayed. Therefore, the user can adjust the positions and sizes of the crown shape data Ca and Cb while grasping the position and size of the teeth represented by the tooth shape data T1 and T2.

In (6-3) of FIG. 6B, the crown shape data Ca and Cb whose positions and sizes are adjusted by the user's operation input are displayed on the operation screen OS2. When the next button B1 is clicked on the operation screen OS2 by the user's operation input, the adjustment of the crown shape data Ca and Cb is completed, and as shown in (6-4), the tooth shape data T1 and T2 are displayed respectively. On the other hand, the mameron shape data M whose size has been adjusted is displayed.

In (6-4) of FIG. 6B, the mameron shape data Ma and Mb whose sizes are adjusted for each of the tooth shape data T1 and T2 are displayed on the operation screen OS3. The mamelon shape data Ma is the mamelon shape data M corresponding to the tooth number included in the tooth shape data T1. Further, the mamelon shape data Mb is the mameron shape data M corresponding to the tooth number included in the tooth shape data T2.

In addition, there may be a plurality of mameron shape data M corresponding to the tooth numbers included in the tooth shape data T1 and T2. In this case, the information processing apparatus 101 may pop up an operation screen on which any of the mamelon shape data Ms can be selected from the plurality of mamelon shape data Ms, for example, by the operation input of the user.

On the operation screen OS3, when the mamelon shape data Ma, Mb is clicked by the user's operation input, the position, size, and shape of the mamelon shape data Ma, Mb can be adjusted. At this time, the viewpoint can be changed, and the position, size, and shape can be adjusted while checking the three-dimensional shape of the tooth dentin represented by the mamelon shape data Ma and Mb from various angles.

In (6-5) of FIG. 6C, the mameron shape data Ma and Mb whose size is adjusted by the operation input of the user are displayed on the operation screen OS3. Further, as shown in (6-6), on the operation screen OS3, the adjusted crown shape data Ca and Cb can be transparently displayed on the mameron shape data Ma and Mb by the operation input of the user.

As a result, the user can adjust the position and size of the mamelon shape data Ma and Mb while grasping the position and size of the outer shape of the tooth represented by the adjusted crown shape data Ca and Cb. In (6-6), the positions of the mamelon shape data Ma and Mb are adjusted.

Further, as shown in (6-7), the mameron shape data Ma and Mb can be transparently displayed on the tooth shape data T1 and T2 by the user's operation input on the operation screen OS3. Thereby, the user can adjust the position and size of the mameron shape data Ma and Mb while grasping the position and size of the tooth represented by the tooth shape data T1 and T2.

In (6-8), the widths of the mamelon shape data Ma and Mb are adjusted so that the dentins of the teeth represented by the mamelon shape data Ma and Mb do not come into contact with each other. When the next button B1 is clicked on the operation screen OS3 by the user's operation input, the adjustment of the mameron shape data Ma and Mb is completed, and the tooth composite data SD is displayed as shown in (6-9). ..

In (6-9) of FIG. 6E, the tooth shape data T1 and T2, the adjusted mameron shape data Ma and Mb, and the adjusted crown shape data Ca and Cb are associated with each other on the operation screen OS4. The synthetic data SD of the tooth is displayed. On the operation screen OS4, when the save button B3 is clicked by the user's operation input, the tooth composite data SD can be saved in a storage device such as a memory 202 or a disk 204.

In the operation screen OS2, when the generation button B4 is clicked by the user's operation input, the crown shape data C'a and C'b may be generated. Further, on the operation screen OS3, when the generation button B4 is clicked by the operation input of the user, the mamelon shape data M'a and M'b may be generated.

(Data generation processing procedure of information processing device 101)
Next, the data generation processing procedure of the information processing apparatus 101 will be described.

FIG. 7 is a flowchart showing an example of the data generation processing procedure of the information processing apparatus 101 according to the first embodiment. In the flowchart of FIG. 7, first, the information processing device 101 acquires the tooth shape data T (step S701).

Next, the information processing apparatus 101 acquires the crown shape data C corresponding to the number of the tooth to be created of the denture included in the acquired tooth shape data T from the crown DB 300 (step S702). Then, the information processing apparatus 101 adjusts the size of the outer shape of the specific tooth represented by the acquired crown shape data C based on the tooth shape data T, and associates the size with the tooth shape data T (step S703).

Next, the information processing apparatus 101 superimposes and displays the crown shape data C whose size has been adjusted on the tooth shape data T in an adjustable manner (step S704). Then, the information processing device 101 determines whether or not the adjustment of the crown shape data C is completed (step S705). Here, the information processing device 101 waits for the adjustment of the crown shape data C to be completed (step S705: No).

Then, when the adjustment of the crown shape data C is completed (step S705: Yes), the information processing device 101 corresponds to the number of the tooth to be created of the denture included in the tooth shape data T acquired from the mameron DB 400. Acquire the mamelon shape data M to be processed (step S706).

Next, the information processing apparatus 101 adjusts the size of the dentin of a specific tooth represented by the acquired mameron shape data M based on the tooth shape data T, and associates the size with the tooth shape data T (step S707). ). Next, the information processing apparatus 101 superimposes and displays the size-adjusted mameron shape data M on the tooth shape data T in an adjustable manner (step S708).

Then, the information processing device 101 determines whether or not the adjustment of the mamelon shape data M is completed (step S709). Here, the information processing apparatus 101 waits for the adjustment of the mameron shape data M to be completed (step S709: No). When the adjustment of the mameron shape data M is completed (step S709: Yes), the information processing device 101 associates the tooth shape data T with the adjusted mameron shape data M and the adjusted crown shape data C. The synthetic data SD of the tooth is generated (step S710).

Then, the information processing device 101 outputs the generated synthetic data SD of the teeth (step S711), and ends a series of processes according to this flowchart. As a result, it is possible to generate and output the shape data T of the tooth having a two-layer structure in which the shape of the dentin and the shape of the outer shape are expressed for the tooth for which the denture is to be created.

In step S710, the information processing device 101 may generate the mameron shape data M'corresponding to the tooth shape data T and the adjusted mameron shape data M. Then, in step S711, the information processing apparatus 101 may convert the generated mameron shape data M'to NC data and output it. In this case, the information processing apparatus 101 may not perform the processes of steps S702 to S705.

Further, in step S710, the information processing apparatus 101 moves inward by a predetermined amount from the outer shape represented by the adjusted crown shape data C and the outer shape represented by the adjusted crown shape data C based on the adjusted crown shape data C. Crown shape data C'with a set interface may be generated. Then, in step S711, the information processing apparatus 101 may convert the generated crown shape data C'to NC data and output it. In this case, the information processing apparatus 101 may not perform the processes of steps S706 to S709.

As described above, according to the information processing apparatus 101 according to the first embodiment, the three-dimensional shape of the outer shape of a specific tooth is represented with respect to the acquired tooth shape data T with reference to the crown DB 300. The crown shape data C can be superimposed and displayed by adjusting the size. Further, according to the information processing apparatus 101, the size of the mamelon shape data M representing the three-dimensional shape of the dentin of a specific tooth is set with respect to the acquired tooth shape data T with reference to the mamelon DB 400. It can be adjusted and superimposed. Then, according to the information processing device 101, the tooth composite data SD in which the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C are associated with each other is generated and output. Can be done. As a result, it is possible to generate synthetic data SD of a two-layered tooth in which the shape of dentin and the shape of the outer shape are expressed for the tooth to be created as a denture, and the appearance of the denture is similar to that of a natural tooth. Can assist in creation.

Further, according to the information processing apparatus 101, the size of the dentin of a specific tooth represented by the mameron shape data M can be enlarged or reduced according to the tooth size represented by the tooth shape data T. Further, according to the information processing device 101, the size of the outer shape of a specific tooth represented by the crown shape data C can be enlarged or reduced according to the tooth size represented by the tooth shape data T. As a result, the size of the dentin and the size of the outer shape of the tooth can be automatically adjusted by enlarging or reducing the size of the tooth while maintaining the three-dimensional shape, for example, according to the size of the tooth for which the denture is to be created. ..

Further, according to the information processing apparatus 101, the crown shape data C, which is superposed and displayed by adjusting the size of the tooth shape data T, is displayed so that at least one of the position, size, and shape can be adjusted. can do. As a result, the user can arbitrarily change the position, size, and shape of the crown shape data C whose size is automatically adjusted with respect to the tooth shape data T.

Further, according to the information processing apparatus 101, the mameron shape data M, which is superposed and displayed by adjusting the size of the tooth shape data T, is displayed so that at least one of the position, size, and shape can be adjusted. can do. As a result, the user can arbitrarily change the position, size, and shape of the mamelon shape data M whose size is automatically adjusted with respect to the tooth shape data T.

Further, according to the information processing apparatus 101, when the crown shape data C is superimposed and displayed on the tooth shape data T, the crown shape data C can be transparently displayed. This makes it easier for the user to confirm the position and size of the tooth shape data T that is superimposed and displayed on the crown shape data C, and thus makes it easier to adjust the position and size of the crown shape data C.

Further, according to the information processing apparatus 101, when the mameron shape data M is superimposed and displayed on the tooth shape data T, the mameron shape data M can be transparently displayed. This makes it easier for the user to confirm the position and size of the tooth shape data T superimposed on the mamelon shape data M, and thus makes it easier to adjust the position and size of the mamelon shape data M.

Further, according to the information processing apparatus 101, the mameron shape data M'corresponding to the tooth shape data T and the adjusted mameron shape data M is generated, and the generated mameron shape data M'is converted into NC data. Can be output. As a result, shape data representing the mameron morphology can be generated, and for example, an NC machine tool is used to create a dentin part denture excluding the remaining patient's tooth (for example, a shaved tooth). Is possible.

Further, according to the information processing apparatus 101, based on the adjusted crown shape data C, the outer shape represented by the adjusted crown shape data C and the outer shape represented by the adjusted crown shape data C are set inside by a predetermined amount. Crown shape data C'with an interface can be generated. Then, according to the information processing apparatus 101, the generated crown shape data C'can be converted into NC data and output. As a result, it is possible to generate shape data representing the enamel portion excluding the dentin portion from the outer shape of the tooth, and for example, it is possible to create a denture of the enamel portion of the patient's tooth.

From these facts, according to the information processing apparatus 101 according to the first embodiment, it is possible to easily generate shape data for reproducing the mameron morphology of the tooth, and the dental technician has low skill and skill level. However, it is possible to create a denture that looks like a natural tooth.

(Embodiment 2)
Next, the information processing device 101 according to the second embodiment will be described. The same parts as those described in the first embodiment will be omitted from the illustration and description.

Mamelon, the internal structure of the tooth, changes over time. For example, mameron is located far from the incisal edge in young people who have finished the growth period, and as they get older, they approach the incisal edge due to bite wear and the like, and eventually become exposed. Therefore, the mamelon morphology often differs from person to person.

Therefore, in the second embodiment, a data generation method for generating shape data that reproduces the mameron form of each person will be described. First, the stored contents of the Mamelon DB 400 used by the information processing apparatus 101 according to the second embodiment will be described.

(Memory contents of Mameron DB400)
FIG. 8 is an explanatory diagram (No. 2) showing an example of the stored contents of the Mamelon DB 400. In FIG. 8, the mamelon DB 400 stores mamelon template information (for example, mamelon template information 800-1, 800-2) representing the numbers and a plurality of mamelon shape data in association with each other.

The number is a number that identifies a tooth. Mamelon shape data is electronic data representing the three-dimensional shape of tooth dentin. However, the mamelon shape data includes data in which the tip portion (the portion near the cut edge) is in an unprocessed state.

For example, the mamelon template information 800-1 includes four mamelon shape data M1-1, M1-2, M1-3, M1-4 representing the tooth dentin of the number "t1". The mameron shape data M1-4 is information in which the shape of the dentin other than the tip portion is expressed and the tip portion is in an unprocessed state. The shape of the mamelon shape data M1-4 other than the tip portion is the same as any of the mamelon shape data M1-1 to M1-3, for example.

(Example of functional configuration of information processing device 101)
Next, a functional configuration example of the information processing apparatus 101 according to the second embodiment will be described. However, the functional configuration example of the information processing device 101 according to the second embodiment is the same as the functional configuration example of the information processing device 101 according to the first embodiment, and thus the illustration is omitted. Further, in the following description, among the processing contents of the functional unit included in the information processing apparatus 101 according to the second embodiment, a portion different from the processing content of the functional unit included in the information processing apparatus 101 according to the first embodiment will be described. To do.

The acquisition unit 501 acquires two-dimensional shape data indicating the shape of the dentin extracted from the captured image of the tooth. Here, the captured image is an image of the tooth taken from the outside or the inside. Imaging the tooth from the outside means imaging the tooth from the labial side. In addition, imaging the tooth from the inside means imaging the tooth from the lingual side (palatal side).

The tooth to be imaged is a tooth to be created as a denture or a tooth corresponding to the tooth. For example, the tooth to be imaged is the patient's tooth before it is shaved for treatment. If the tooth to be created as a denture is damaged, the same type of tooth on the opposite side of the tooth may be imaged. For example, if the upper left middle incisor is damaged, the upper right middle incisor may be the imaging target.

The two-dimensional shape data indicating the shape of the dentin may be manually created based on the captured image of the tooth, for example, or the dentin may be manually created from the captured image of the tooth by using the edge detection technique. It may be created by automatically extracting the two-dimensional shape data indicating the shape of the quality.

The generation unit 504 generates mameron shape data M representing the three-dimensional shape of the dentin of a specific tooth based on the acquired two-dimensional shape data showing the shape of the dentin. A specific tooth is a tooth for which a denture is to be created. Specifically, for example, the generation unit 504 determines that the tip portion of the mamelon shape data M of the dentin of the specific tooth has the shape of the dentin indicated by the acquired two-dimensional shape data. Generates dentin mamelon shape data M.

More specifically, for example, first, the generation unit 504 corresponds to the number of the tooth to be created of the denture included in the tooth shape data T from the mamelon DB 400 shown in FIG. 8, and the tip portion has a tip portion. The raw mamelon shape data M is acquired. Then, the generation unit 504 processes the mamelon shape data M whose tip portion is unprocessed so that the shape of the tip portion viewed from the outside or the inside becomes the shape of the dentin represented by the acquired two-dimensional shape data. ..

This makes it possible to generate mamelon shape data M that reproduces the mamelon morphology of the patient's teeth. In this case, the adjusting unit 502 associates the generated mamelon shape data M with the tooth shape data T by adjusting the size. Further, the display control unit 503 controls the tooth shape data T to display the size-adjusted mameron shape data M in an adjustable manner. Further, the generation unit 504 may generate, for example, tooth composite data in which the tooth shape data T and the adjusted mameron shape data M are associated with each other. In this case, the output unit 505 may output the composite data of the tooth in which the tooth shape data T and the adjusted mameron shape data M are associated with each other.

An example of generating the mamelon shape data M will be described later with reference to FIG.

Further, the generation unit 504 may generate the mamelon shape data M'corresponding to the tooth shape data T and the generated mamelon shape data M. Then, the generation unit 504 may convert the generated mameron shape data M'to NC data.

(Example of generating mamelon shape data M)
FIG. 9 is an explanatory diagram showing an example of generating mamelon shape data M. In FIG. 9, the captured image 901 is a captured image obtained by capturing the patient's teeth from the outside (labial side). Further, the two-dimensional shape data 902 is information indicating the two-dimensional shape of the dentin extracted from the captured image 901. Here, the number of the tooth for which the denture is to be created is set to "t1".

In this case, the generation unit 504 acquires the mamelon shape data M1-4 corresponding to the tooth number “t1” for which the denture is to be created and whose tip portion is unprocessed, from the mamelon DB400 (see FIG. 8). .. Then, the generation unit 504 processes the acquired mameron shape data M1-4 so that the shape of the tip portion viewed from the outside becomes the shape of the dentin represented by the two-dimensional shape data 902.

More specifically, for example, the generation unit 504 is two-dimensional so that the upper end portion of the two-dimensional shape data 902 is located about 5 mm from the upper end portion of the mameron shape data M1-4 in the three-dimensional coordinate system. The shape data 902 is arranged. Next, the generation unit 504 adjusts the size of the two-dimensional shape data 902 by enlarging or reducing it so as to match the width of the mameron shape data M1-4.

Then, the generation unit 504 processes the mameron shape data M1-4 so as to be hollowed out from the outside to the inside (or from the inside to the outside) using the adjusted two-dimensional shape data 902. As a result, it is possible to generate mamelon shape data M1-4 that reproduces the mameron morphology of the patient's tooth specified from the captured image 901.

(Data generation processing procedure of information processing device 101)
Next, the data generation processing procedure of the information processing apparatus 101 will be described.

10 and 11 are flowcharts showing an example of the data generation processing procedure of the information processing apparatus 101 according to the second embodiment. In the flowchart of FIG. 10, first, the information processing device 101 acquires the tooth shape data T (step S1001).

Then, the information processing device 101 acquires two-dimensional shape data indicating the shape of the dentin of the tooth extracted from the captured image of the tooth (step S1002). Next, the information processing apparatus 101 acquires the crown shape data C corresponding to the number of the tooth to be created of the denture included in the acquired tooth shape data T from the crown DB 300 (step S1003).

Then, the information processing device 101 adjusts the size of the outer shape of the specific tooth represented by the acquired crown shape data C based on the tooth shape data T, and associates the size with the tooth shape data T (step S1004). Next, the information processing apparatus 101 adjusts the size of the tooth shape data T and superimposes and displays the associated crown shape data C in an adjustable manner (step S1005).

Then, the information processing device 101 determines whether or not the adjustment of the crown shape data C is completed (step S1006). Here, the information processing apparatus 101 waits for the adjustment of the crown shape data C to be completed (step S1006: No). Then, when the adjustment of the crown shape data C is completed (step S1006: Yes), the information processing apparatus 101 shifts to step S1101 shown in FIG.

In the flowchart of FIG. 11, first, the information processing device 101 corresponds to the number of the tooth to be created of the denture included in the tooth shape data T acquired from the mamelon DB 400, and the tip portion of the mamelon is unprocessed. The shape data M is acquired (step S1101). Then, the information processing device 101 is based on the acquired two-dimensional shape data representing the shape of the dentin and the mamelon shape data M whose tip portion is unprocessed, and the mamelon shape representing the three-dimensional shape of the tooth dentin. Data M is generated (step S1102).

Next, the information processing apparatus 101 adjusts the size of the tooth dentin represented by the generated mamelon shape data M based on the tooth shape data T and associates it with the tooth shape data T (step S1103). Next, the information processing apparatus 101 adjusts the size of the tooth shape data T and superimposes and displays the associated mameron shape data M in an adjustable manner (step S1104).

Then, the information processing device 101 determines whether or not the adjustment of the mamelon shape data M is completed (step S1105). Here, the information processing device 101 waits for the adjustment of the mameron shape data M to be completed (step S1105: No). When the adjustment of the mameron shape data M is completed (step S1105: Yes), the information processing device 101 associates the tooth shape data T with the adjusted mameron shape data M and the adjusted crown shape data C. The synthetic data SD of the tooth is generated (step S1106).

Then, the information processing device 101 outputs the generated synthetic data SD of the teeth (step S1107), and ends a series of processes according to this flowchart. As a result, it is possible to generate and output the tooth shape data T expressing the shape of the dentin extracted from the captured image of the patient's tooth for the tooth to be created as the denture.

As described above, according to the information processing apparatus 101 according to the second embodiment, two-dimensional shape data indicating the shape of the dentin of the tooth extracted from the captured image of the tooth is acquired, and the acquired two-dimensional shape is acquired. Based on the shape data, the mamelon shape data M of the dentin of a specific tooth can be generated. As a result, it is possible to generate shape data that can reproduce the mamelon morphology of the patient's tooth, and it is possible to support the creation of a denture that looks like a natural tooth and is easily compatible with other teeth of the patient.

Further, according to the information processing apparatus 101, the shape of the tip portion of the mamelon shape data M in which the tip portion of a specific tooth represents the shape of unprocessed dentin is acquired as the two-dimensional shape obtained from the outside or the inside. By processing so as to have the shape of the dentin represented by the data, it is possible to generate the mamelon shape data M of the dentin of a specific tooth. As a result, the part other than the tip part of the tooth can be complemented with, for example, the shape of the dentin of a typical tooth, and the man-hours for generating shape data for reproducing the mameron morphology of the patient's tooth can be suppressed. be able to.

The data generation method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This data generation program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO (Magnet-Optical disk), a DVD (Digital Versail Disc), or a USB (Universal Social Bus) memory. It is executed by being read from a recording medium by a computer. Further, this data generation program may be distributed via a network such as the Internet.

The following additional notes are further disclosed with respect to the above-described embodiment.

(Appendix 1) Obtain tooth shape data and
With reference to the storage unit that stores the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the shape data of the outer shape of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
Generates tooth composite data in which the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment are associated with each other.
A data generation program characterized by having a computer perform processing.

(Appendix 2) The process of adjusting the size of the dentin shape data of the specific tooth is
The size of the dentin represented by the shape data of the dentin of the specific tooth is enlarged or reduced according to the size of the tooth represented by the shape data of the tooth.
The process of adjusting the size of the shape data of the outer shape of the specific tooth is
The size of the outer shape represented by the shape data of the outer shape of the specific tooth is enlarged or reduced according to the size of the tooth represented by the shape data of the tooth.
The data generation program according to Appendix 1, wherein the data is generated.

(Appendix 3) The shape data of the dentin of the specific tooth, which is superimposed and displayed by adjusting the size with respect to the shape data of the tooth, is displayed so that at least one of the position, size, and shape can be adjusted. ,
The shape data of the outer shape of the specific tooth, which is superposed on the shape data of the tooth by adjusting the size, is displayed so that at least one of the position, the size, and the shape can be adjusted.
The data generation program according to Appendix 1 or 2, characterized in that.

(Appendix 4) Obtain tooth shape data and
Two-dimensional shape data showing the shape of the dentin of the tooth is extracted from the captured image of the tooth.
Based on the extracted two-dimensional shape data, the shape data of the dentin of the tooth is generated.
The generated dentin shape data of the tooth is superimposed and displayed on the tooth shape data by adjusting the size.
Generates tooth composite data in which the tooth shape data and the adjusted tooth dentin shape data are associated with each other.
A data generation program characterized by having a computer perform processing.

(Appendix 5) In the process of generating the dentin shape data of the tooth, the tooth has the shape of the dentin indicated by the acquired two-dimensional shape data so that the tip portion of the dentin shape data of the tooth has the shape of the dentin. Generate dentin shape data for
The data generation program according to Appendix 4, wherein the data is generated.

(Supplementary Note 6) The data generation program according to any one of Supplementary note 1 to 3, wherein the computer is made to execute a process of outputting the generated synthetic data of the tooth.

(Appendix 7) When the shape data of the dentin of the specific tooth is superimposed and displayed on the shape data of the tooth, the shape data of the dentin of the specific tooth is transparently displayed.
When the shape data of the outer shape of the specific tooth is superimposed and displayed on the shape data of the tooth, the shape data of the outer shape of the specific tooth is transparently displayed.
The data generation program according to Appendix 3, wherein the data is generated.

(Appendix 8) The shape data representing the shape of the dentin of the tooth includes a finger-like structure.
The data generation program according to Appendix 1, wherein the data is generated.

(Appendix 9) Obtain tooth shape data and
With reference to the storage unit that stores the shape data of the dentin of the tooth, the size of the shape data of the dentin of a specific tooth is adjusted according to the acquired shape data of the tooth.
The shape data corresponding to the shape data of the tooth and the shape data of the dentin of the specific tooth after the adjustment is generated.
The generated shape data is converted into NC data and output.
A data generation program characterized by having a computer perform processing.

(Appendix 10) Obtain tooth shape data and
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the size of the shape data of the outer shape of a specific tooth is adjusted according to the acquired shape data of the tooth.
Based on the shape data of the outer shape of the specific tooth after the adjustment, the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment and the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment are obtained. Generate shape data with a boundary surface set inside the fixed quantity,
The generated shape data is converted into NC data and output.
A data generation program characterized by having a computer perform processing.

(Appendix 11) Obtain tooth shape data and obtain
With reference to the storage unit that stores the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the shape data of the outer shape of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
Generates tooth composite data in which the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment are associated with each other.
A data generation method characterized by the processing being performed by a computer.

(Appendix 12) Obtain tooth shape data and obtain
With reference to the storage unit that stores the shape data of the dentin of the tooth, the size of the shape data of the dentin of a specific tooth is adjusted according to the acquired shape data of the tooth.
The shape data corresponding to the shape data of the tooth and the shape data of the dentin of the specific tooth after the adjustment is generated.
The generated shape data is converted into NC data and output.
A data generation method characterized by the processing being performed by a computer.

(Appendix 13) Obtain tooth shape data and obtain
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the size of the shape data of the outer shape of a specific tooth is adjusted according to the acquired shape data of the tooth.
Based on the shape data of the outer shape of the specific tooth after the adjustment, the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment and the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment are obtained. Generate shape data with a boundary surface set inside the fixed quantity,
The generated shape data is converted into NC data and output.
A data generation method characterized by the processing being performed by a computer.

(Appendix 14) Obtain tooth shape data and obtain
With reference to the storage unit that stores the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the shape data of the outer shape of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
Generates tooth composite data in which the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment are associated with each other.
An information processing device characterized by having a control unit.

(Appendix 15) Obtain tooth shape data and
With reference to the storage unit that stores the shape data of the dentin of the tooth, the size of the shape data of the dentin of a specific tooth is adjusted according to the acquired shape data of the tooth.
The shape data corresponding to the shape data of the tooth and the shape data of the dentin of the specific tooth after the adjustment is generated.
The generated shape data is converted into NC data and output.
An information processing device characterized by having a control unit.

(Appendix 16) Tooth shape data is acquired and
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the size of the shape data of the outer shape of a specific tooth is adjusted according to the acquired shape data of the tooth.
Based on the shape data of the outer shape of the specific tooth after the adjustment, the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment and the outer shape represented by the shape data of the outer shape of the specific tooth after the adjustment are obtained. Generate shape data with a boundary surface set inside the fixed quantity,
The generated shape data is converted into NC data and output.
An information processing device characterized by having a control unit.

101 Information processing device 110, 120 Storage unit 200 Bus 201 CPU
202 Memory 203 Disk Drive 204 Disk 205 I / F
206 Display 207 Input Device 210 Network 300 Crown DB
400 Mamelon DB
501 Acquisition unit 502 Adjustment unit 503 Display control unit 504 Generation unit 505 Output unit

Claims (8)

Get tooth shape data,
Two-dimensional shape data showing the shape of the dentin of the tooth is extracted from the captured image of the tooth.
With reference to the storage unit that stores the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of a specific tooth including the finger-like structure is generated based on the extracted two-dimensional shape data.
The generated dentin shape data of the specific tooth is superimposed and displayed on the tooth shape data by adjusting the size.
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the shape data of the outer shape of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
Generates tooth composite data in which the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment are associated with each other.
A data generation program characterized by having a computer perform processing. The process of adjusting the size of the dentin shape data of the specific tooth is
The size of the dentin represented by the shape data of the dentin of the specific tooth is enlarged or reduced according to the size of the tooth represented by the shape data of the tooth.
The process of adjusting the size of the shape data of the outer shape of the specific tooth is
The size of the outer shape represented by the shape data of the outer shape of the specific tooth is enlarged or reduced according to the size of the tooth represented by the shape data of the tooth.
The data generation program according to claim 1. The dentin shape data of the specific tooth, which is superposed on the tooth shape data by adjusting the size, is displayed so that at least one of the position, size, and shape can be adjusted.
The shape data of the outer shape of the specific tooth, which is superposed on the shape data of the tooth by adjusting the size, is displayed so that at least one of the position, the size, and the shape can be adjusted.
The data generation program according to claim 1 or 2. The data generation program according to any one of claims 1 to 3, wherein the computer executes a process of outputting the generated synthetic data of the teeth. The process of generating the dentin shape data of the specific tooth is such that the tip portion of the dentin shape data of the specific tooth has the dentin shape indicated by the acquired two-dimensional shape data. Generate dentin shape data for teeth,
The data generation program according to claim 1. Get tooth shape data,
Two-dimensional shape data showing the shape of the dentin of the tooth is extracted from the captured image of the tooth.
With reference to the storage unit that stores the shape data of the dentin of the tooth, the shape data of the dentin of a specific tooth including the finger-like structure is generated based on the extracted two-dimensional shape data.
The size of the generated dentin shape data of the specific tooth is adjusted according to the acquired shape data of the tooth.
The shape data corresponding to the shape data of the tooth and the shape data of the dentin of the specific tooth after the adjustment is generated.
The generated shape data is converted into NC data and output.
A data generation program characterized by having a computer perform processing. An information processing device that has a control unit
The process of acquiring tooth shape data by the control unit and
The step of extracting the two-dimensional shape data showing the shape of the dentin of the tooth from the captured image of the tooth by the control unit, and
The control unit refers to a storage unit that stores shape data representing the shape of the dentin of the tooth, and based on the extracted two-dimensional shape data, the shape of the dentin of a specific tooth including a finger structure. The process of generating data and
A step of adjusting the size of the generated dentin shape data of the specific tooth with respect to the tooth shape data by the control unit.
A step of superimposing and displaying the adjusted dentin shape data of a specific tooth on the tooth shape data by the control unit.
A step of referring to a storage unit that stores the shape data of the outer shape of the tooth by the control unit, and adjusting the size of the shape data of the outer shape of a specific tooth with respect to the shape data of the tooth.
A step of superimposing and displaying the shape data of the outer shape of a specific tooth after adjustment on the shape data of the tooth by the control unit.
A step of generating synthetic tooth data by combining the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment by the control unit. ,
A data generation method characterized by executing. Get tooth shape data,
Two-dimensional shape data showing the shape of the dentin of the tooth is extracted from the captured image of the tooth.
With reference to the storage unit that stores the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of a specific tooth including the finger-like structure is generated based on the extracted two-dimensional shape data.
The generated dentin shape data of the specific tooth is superimposed and displayed on the tooth shape data by adjusting the size.
With reference to the storage unit that stores the shape data of the outer shape of the tooth, the shape data of the outer shape of a specific tooth is superimposed and displayed on the shape data of the tooth by adjusting the size.
Generates tooth composite data in which the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the outer shape data of the specific tooth after adjustment are associated with each other.
An information processing device characterized by having a control unit.

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