JP2018064821A - Data generating program, data generating method, information processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate shape data representing a mamelon form.SOLUTION: An information processing apparatus 101 acquires shape data of a tooth. The information processing apparatus 101 refers to a first storage unit 110 and superimposes dentine shape data of the dentine of a specific tooth on the acquired tooth shape data, with its dimensions adjusted. The information processing apparatus 101 refers to a second storage unit 120 and superimposes external shape data of the external shape of the specific tooth on the tooth shape data, with its dimensions adjusted. The information processing apparatus 101 generates combined data of the tooth by mapping the post-adjusted dentine shape data of the specific tooth and the post-adjusted external shape data of the specific tooth on the acquired tooth data.SELECTED DRAWING: Figure 1

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 carved for treatment due to caries, periodontal disease, accidents, or the like. In such cases, dentures may be created to make up for damaged teeth. As a method for creating a denture, there is, for example, a method in which a denture is created by machining a ceramic material based on scanned tooth shape data.

  As a prior art, the three-dimensional shape data of the covering 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 intraoral site measured by an OCT (Optical Coherent Tomography) probe. There is. Further, there is a denture manufacturing method in which a ceramic mold is mounted on a base or a root model through a ceramic paste material. In addition, there is a dental filling and restorative material kit for performing restoration that has good color tone compatibility and little reduction in lightness in restoration of teeth.

International Publication No. 2011/102118 JP 2000-139957 A International Publication No. 2014/148293

  However, in the prior art, it is difficult to create a denture that looks close to natural teeth. For example, natural teeth have a two-color structure consisting of dentin (mamelon) and enamel covering it. However, in the method of creating a denture by machining a ceramic material, the created denture is a single color made of one kind of ceramic and does not match a natural tooth.

  In one aspect, the present invention is directed to generating shape data representing a mamelon morphology.

  In one embodiment, the tooth shape data is acquired, the shape data representing the shape of the dentin of the tooth is referred to, and a storage unit storing the shape data is referred to. The shape data is superimposed and displayed with the size adjusted, the storage unit storing the shape data of the tooth outline is referred to, and the shape data of the specific tooth outline is compared with the shape data of the tooth. The tooth composite data that associates the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment A data generation program for generating is provided.

  Further, in one embodiment, tooth shape data is acquired, two-dimensional shape data indicating the shape of a tooth dentin is extracted from a captured image obtained by imaging a tooth, and based on the extracted two-dimensional shape data, Tooth dentin shape data is generated, and the generated dentin shape data is superimposed on the tooth shape data by adjusting the size, and the tooth shape data and adjustment There is provided a data generation program for generating synthetic data of teeth in association with the shape data of dentin of the subsequent teeth.

  In one embodiment, the tooth shape data is acquired, the storage unit storing the tooth dentin shape data is referred to, and the dentin of a specific tooth is determined according to the acquired tooth shape data. The shape data of the tooth is adjusted, 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 generation program for converting and outputting is provided.

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

  According to one aspect of the present invention, it is possible to generate shape data representing a mamelon shape.

FIG. 1 is an explanatory diagram of an example of the data generation method according to the first embodiment. FIG. 2 is a block diagram of 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 contents stored in the crown DB 300. FIG. 4 is an explanatory diagram (part 1) illustrating an example of the contents stored in the mameron DB 400. FIG. 5 is a block diagram of a functional configuration example of the information processing apparatus 101 according to the first embodiment. FIG. 6A is an explanatory diagram (part 1) illustrating a screen transition example of the operation screen. FIG. 6B is an explanatory diagram (part 2) of the screen transition example of the operation screen. FIG. 6C is an explanatory diagram (part 3) of the screen transition example of the operation screen. FIG. 6D is an explanatory diagram (part 4) of the screen transition example of the operation screen. FIG. 6E is an explanatory diagram (part 5) illustrating a screen transition example of the operation screen. FIG. 7 is a flowchart of an example of a data generation processing procedure of the information processing apparatus 101 according to the first embodiment. FIG. 8 is an explanatory diagram (part 2) illustrating an example of the contents stored in the mameron DB 400. FIG. 9 is an explanatory diagram showing an example of generation of the mamelon shape data M. FIG. 10 is a flowchart (part 1) illustrating an example of a data generation processing procedure of the information processing apparatus 101 according to the second embodiment. FIG. 11 is a flowchart (part 2) illustrating an example of a data generation processing procedure of the information processing apparatus 101 according to the second embodiment.

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

(Embodiment 1)
FIG. 1 is an explanatory diagram of an example of the data generation method according to the first embodiment. In FIG. 1, an information processing apparatus 101 is a computer that generates shape data representing a mamelon form. The information processing apparatus 101 is, for example, a PC (Personal Computer) or a tablet PC in which a CAD / CAM (Computer Aided Design / Computer Aided Manufacturing) system is introduced.

  Here, the macelon form is a form of an internal structure of a tooth called a dentin macelon. The shape data representing the maceron form is used to create a denture. A denture is an artificial tooth to make up for a damaged tooth. For example, a denture may be created to make up for a tooth damaged due to caries, periodontal disease, accident, or the like.

  The denture is created, for example, by machining or casting a ceramic material based on tooth shape data scanned by 3D (Dimensions). Dentures created by this production method are monochromatic with a single ceramic material. On the other hand, natural teeth have a structure including dentin and enamel covering it. Dentin has a yellowish color, but enamel has a whitish translucent color and is lighter in color than dentin. In other words, natural teeth are not monochromatic. For this reason, monochromatic dentures made of one kind of ceramic material are not compatible with natural teeth.

  It is also conceivable that the dental technician manually colors the denture to bring it closer to natural teeth. However, in order to align the natural teeth and the dentures, subtle color preparations and the like are required, and high skills and experience of dental technicians are required. Further, it takes time and effort to manually color the denture.

  Therefore, in the present embodiment, a data generation method that supports creation of a denture that looks similar to a natural tooth by generating shape data representing a mamelon form will be described. Hereinafter, a processing example of the information processing apparatus 101 will be described.

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

  In the example of FIG. 1, the case where the tooth shape data D1 is acquired is assumed. The tooth shape data D1 represents the three-dimensional shape of the patient's teeth cut for the treatment of caries and periodontal disease. In FIG. 1, the part denoted by “D1” indicates the patient's tooth represented by the tooth shape data D1.

  (2) The information processing apparatus 101 refers to the first storage unit 110, and displays the dentin shape data of the dentin of a specific tooth superimposed on the acquired tooth shape data with the size adjusted To do. Here, the 1st memory | storage part 110 is a memory | storage part which memorize | stores the dentin shape data showing the shape of the dentin of a tooth | gear. Tooth dentin is mamelon which is an internal structure of a tooth.

  The dentin shape data is electronic data representing the three-dimensional shape of the dentin of the teeth, and is, for example, three-dimensional point cloud data. Dentin shape data includes, for example, a finger-like structure. The dentin shape data is generated, for example, by creating a dental dentin model using gypsum or the like and scanning the dental dentin model using a 3D scanner.

  The first storage unit 110 may store, for example, dentin shape data representing the dentin shape of the tooth type corresponding to the tooth type. Examples of tooth types include medium incisors, side 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, for example, the information processing apparatus 101 acquires dentin shape data D2 of the dentin of a specific tooth from the first storage unit 110 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 apparatus 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 expands or contracts the dentin size represented by the dentin shape data D2 while maintaining the three-dimensional shape according to the tooth size represented by the tooth shape data D1. (Enlarge or reduce). Thereby, 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 displaying dentin shape data superimposed on the tooth shape data, the information processing apparatus 101 displays the positions of the centers of gravity of the tooth shape data and the dentin shape data together. Also good. Further, the information processing apparatus 101 may display the position of the upper end or the lower end while aligning the center axes of the tooth shape data and the dentin shape data.

  In the example of FIG. 1, the dentin shape data D2 whose size has been adjusted is superimposed and displayed on the tooth shape data D1. Here, the tooth shape data D1 and the dentin shape data D2 whose size has been adjusted are displayed with the positions of the lower ends aligned with the central axis. In FIG. 1, the part denoted by “D2” indicates the dentin represented by the dentin shape data D2 whose size has been adjusted.

  (3) The information processing apparatus 101 refers to the second storage unit 120 and superimposes and displays the external shape data of the specific tooth outline on the tooth shape data with the size adjusted. Here, the 2nd memory | storage part 120 is a memory | storage part which memorize | stores the external shape data showing the external shape of a tooth | gear. The outline of a tooth is an enamel part 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, for example, three-dimensional point cloud data. The external shape data is generated, for example, by creating a model of a tooth outline using gypsum or the like and scanning the tooth outline model using a 3D scanner. The second storage unit 120 may store, for example, external shape data representing the external shape of the tooth type corresponding to the type of tooth.

  In the example of FIG. 1, for example, the information processing apparatus 101 acquires the external shape data D3 of the specific tooth outline from the second storage unit 120 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. And the information processing apparatus 101 adjusts the magnitude | size of the external shape of the specific tooth which the external shape data D3 represents based on the tooth shape data D1.

  Specifically, for example, the information processing apparatus 101 maintains the three-dimensional shape of the specific tooth shape represented by the outer shape data D3 according to the tooth size represented by the tooth shape data D1. Scale up and down. Thereby, the size of the external shape of the specific tooth represented by the external shape data D3 is automatically adjusted according to the size of the tooth represented by the tooth shape data D1.

  In addition, for example, when the external shape data is superimposed and displayed on the tooth shape data, the information processing apparatus 101 may display the position of the center of gravity of the tooth shape data and the external shape data together. . Further, the information processing apparatus 101 may display the position 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 the size adjustment is superimposed and displayed on the tooth shape data D1. Here, the tooth shape data D1 and the outer shape data D3 whose size has been adjusted are displayed with the positions of the lower ends aligned with the center axis. In FIG. 1, the part denoted by reference sign “D3” indicates the outer shape of a specific tooth represented by the outer shape data D3 whose size has been adjusted.

  (4) The information processing apparatus 101 associates the acquired tooth shape data, the dentin shape data of the adjusted specific dentin, and the external shape data of the adjusted specific tooth outline Tooth composite data is generated. Here, the synthetic data of teeth is shape data of a two-layer structure that represents the outer shape of a tooth and the shape of a maceron whose size has been adjusted according to the size of a patient's tooth.

  In the example of FIG. 1, the information processing apparatus 101 combines the tooth shape data D1, the dentin shape data D2 after the size adjustment, and the external shape data D3 after the size adjustment. Data D4 is generated. 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 in the tooth synthesis data D4.

  Thus, according to the information processing apparatus 101, it is possible to generate shape data that represents the shape of the tooth's mammeron, and it is possible to support the creation of a denture that looks similar to a natural tooth. In the example of FIG. 1, generating tooth composite data D4 having a two-layered structure representing a tooth profile and a maceron shape adjusted according to the size of a patient's tooth cut for treatment. Can do.

  Further, for example, the generated tooth synthesis data D4 can be displayed on a display (for example, a display 206 shown in FIG. 2 described later), and fine portions can be manually adjusted. At this time, the dentin shape data D2 and the external shape data D3 whose sizes are automatically adjusted with respect to the tooth shape data D1 are displayed with the positions of the lower ends aligned with the center axis. It becomes easy to work, and the number of user operations for adjustment work can be reduced.

  In addition, as a method for creating a denture using synthetic tooth data, for example, a casting method such as a lost wax manufacturing method or machining can be used. For example, when creating a denture by the lost wax manufacturing method, scrape the wax (wax) to make a mameron-shaped prototype, wrap around it with gypsum etc., then melt the wax inside to make a cavity, A denture portion denture can be created by pouring a melted ceramic material or the like. In the same way, on the denture part of the created dentine, scrape the wax to make a prototype of the external shape of the tooth, wrap around it with gypsum etc., melt the wax inside to make a cavity, and melt into the cavity By casting a ceramic material or the like, a denture having an enamel portion formed on a dentin portion can be created. At this time, by using a material different from the ceramic material used for the dentin portion, it is possible to finally create a denture having a two-color structure like a natural tooth. Also, when creating dentures by machining, based on the synthetic data of the teeth, create denture dentures and enamel dentures by machining (cutting etc.) using different ceramic materials. Thus, it is possible to create a denture having a two-color structure such as a natural tooth.

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

  FIG. 2 is a block diagram of a hardware configuration example of the information processing apparatus 101 according to the first embodiment. In FIG. 2, an information processing apparatus 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, Have Each component is connected by a bus 200.

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

  The disk drive 203 controls reading / writing of data with respect to the disk 204 according to the control of the CPU 201. The disk 204 stores 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 other devices via the network 210. The I / F 205 serves as an interface between the network 210 and the own apparatus, and controls input / output of data from other apparatuses. The network 210 is, for example, a local area network (LAN), a wide area network (WAN), or the Internet.

  A display 206 displays data such as a document, an image, and function information as well as a cursor, an icon, or a tool box. 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 or a mouse, or may be a touch panel type input pad or a numeric keypad.

(Memory content of Crown DB300)
Next, the contents stored in 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 and the disk 204 shown in FIG. The second storage unit 120 illustrated in FIG. 1 corresponds to the crown DB 300, for example.

  FIG. 3 is an explanatory diagram showing an example of the contents stored in the crown DB 300. In FIG. 3, the crown DB 300 stores crown model information (for example, crown model information 300-1 and 300-2) that expresses a number and a plurality of crown shape data in association with each other.

  The number is a number that identifies a tooth. The teeth are numbered according to the location (position) of the teeth. The crown shape data is electronic data representing the three-dimensional shape of the tooth outline. For example, the crown model information 300-1 includes three crown shape data C1-1, C1-2, and C1-3 that represent the outer shape of the tooth with the number “t1”.

  The crown shape data is generated, for example, by creating a model imitating several types of typical tooth outlines with plaster etc. for each number of teeth and scanning the tooth outline model with a 3D scanner. can do. For example, the crown shape data may be generated for all teeth of a person, or may be generated for some teeth.

(Contents stored in the Mameron DB400)
Next, the contents stored in the mammer 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 and the disk 204 shown in FIG. The first storage unit 110 illustrated in FIG. 1 corresponds to the mamelon DB 400, for example.

  FIG. 4 is an explanatory diagram (part 1) illustrating an example of the contents stored in the mameron DB 400. In FIG. 4, the mameron DB 400 stores mameron template information (for example, mameron template information 400-1 and 400-2) that associates numbers and a plurality of mameron shape data in association with each other.

  The number is a number that identifies a tooth. The maceron shape data is electronic data representing the three-dimensional shape of the dentin of the tooth. For example, the mameron template information 400-1 includes three mameron shape data M1-1, M1-2, and M1-3 representing the dentin of the tooth with the number “t1”.

  In addition, for example, the shape of the melon shape data is to create a model imitating several types of typical dentin with plaster etc. for each number of teeth and scan the dentin model with a 3D scanner. Can be generated. The maceron shape data may be generated for all teeth of a person, or may be generated for some teeth, for example.

(Functional configuration example of the information processing apparatus 101)
FIG. 5 is a block diagram of a functional configuration example of the information processing apparatus 101 according to the first embodiment. In FIG. 5, the information processing apparatus 101 includes an acquisition unit 501, an adjustment unit 502, a display control unit 503, a generation unit 504, and an output unit 505. The acquisition unit 501 to the output unit 505 are functions serving as a control unit. 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 illustrated in FIG. Alternatively, the function is realized by the I / F 205. The processing result of each functional unit is stored in a storage device such as the memory 202 and the disk 204, for example.

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

  Specifically, for example, the acquisition unit 501 may acquire the tooth shape data T by a user operation input using the input device 207 illustrated 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, for example, through the I / F 205.

  With reference to the crown DB 300 shown in FIG. 3, the adjustment unit 502 adjusts the size of the crown shape data C that represents the three-dimensional shape of the specific tooth profile with respect to the acquired tooth shape data T. To associate. Specifically, for example, first, the adjustment unit 502 acquires, from the crown DB 300, any one of the crown shape data C corresponding to the number of the tooth to be created as a denture included in the acquired tooth shape data T. .

  For example, if the tooth for which a denture is to be created is “upper right middle incisor”, the adjustment unit 502 acquires crown shape data C corresponding to the number of “upper right middle incisor” from the crown DB 300. In addition, when there are a plurality of crown shape data corresponding to the tooth number, which crown shape data is acquired 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 number by the user's operation input using the input device 207.

  Next, the adjustment unit 502 adjusts the size of the external shape of the specific tooth represented by the acquired crown shape data C based on the tooth shape data T. Specifically, for example, the adjustment unit 502 expands or contracts the size of the specific tooth outline represented by the crown shape data C in accordance with the tooth size represented by the tooth shape data T.

  More specifically, for example, the adjustment unit 502 makes the outer periphery of the root portion of the specific tooth represented by the crown shape data C to be a predetermined magnification of the outer periphery of the tooth root portion represented by the tooth shape data T. The size may be adjusted. The predetermined magnification can be set to an arbitrary value larger than 1. The adjustment 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 adjustment unit 502 records the tooth shape data T and the crown shape data C whose size has been adjusted in association with each other. At this time, for example, the adjustment unit 502 may determine and record the relative positional relationship of the crown shape data C after the size adjustment with respect to the tooth shape data T.

  More specifically, for example, when the adjustment unit 502 associates the tooth shape data T with the crown shape data C whose size has been adjusted, the center of gravity of the tooth shape data T and the crown shape data C is used. These positions may be recorded together. Further, the adjustment 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 that passes through the center of the object (for example, the center of gravity).

  In addition, the adjustment unit 502 refers to the Mamelon DB 400 illustrated in FIG. 4 and increases 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. Adjust the height to match. Specifically, for example, first, the adjustment unit 502 acquires, from the Mamelon DB 400, any Mamelon shape data M corresponding to the number of the tooth to be created as a denture included in the acquired tooth shape data T. .

  For example, if the tooth for which a denture is to be created is “upper right middle incisor”, the adjustment unit 502 acquires the mameron shape data M corresponding to the number “upper right middle incisor” from the mameron DB 400. In addition, when there are a plurality of mammeron shape data corresponding to the tooth number, which mameron shape data is acquired may be set in advance. In addition, for example, one of the mammel shape data may be selected from a plurality of mammeron shape data corresponding to the tooth number by a user operation input using the input device 207.

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

  In more detail, for example, the adjustment unit 502 is configured so that the outer periphery of the dentin root portion represented by the mammeron shape data M has a predetermined magnification of the outer periphery of the tooth root portion represented by the tooth shape data T. You may decide to adjust a magnitude | size. The predetermined magnification can be set to an arbitrary value larger than 1. Further, the adjustment unit 502 adjusts the size so that the size of the dentin root portion represented by the mammeron shape data M is about several millimeters larger than the size of the tooth root portion represented by the tooth shape data T. You may decide.

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

  More specifically, for example, when the adjustment unit 502 associates the tooth shape data T with the size-adjusted mammeron shape data M, the center of gravity of the tooth shape data T and the mamelon shape data M is, for example, These positions may be recorded together. Further, the adjustment unit 502 may record the position of the upper end or the lower end while aligning the central axes of the tooth shape data T and the mammeron shape data M.

  The display control unit 503 controls the tooth shape data T so that the crown shape data C whose size has been adjusted is displayed in an adjustable manner. Specifically, for example, the display control unit 503 displays an operation screen capable of adjusting at least one of the position, the size, and the shape of the crown shape data C with respect to the tooth shape data T on the display 206 illustrated in FIG. To display.

  At this time, for example, the display control unit 503 determines 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 Alternatively, the crown shape data C may be displayed in a superimposed manner. Adjustment of the position, size, and shape of the crown shape data C on the operation screen is performed by, for example, a user operation input using the input device 207.

  Accordingly, 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, since the tooth shape data T and the position of the center of gravity are displayed together when the crown shape data C is displayed, 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, for example, when the crown shape data C is superimposed on the tooth shape data T, the display control unit 503 may display the crown shape data C in a transparent manner. Here, the transparent display means to display so that the figure behind the target figure (the figure in the lower layer) can be seen by increasing the transparency other than the outline of the target figure on the screen. This makes it easier for the user to confirm the position and size of the tooth shape data T superimposed on the crown shape data C, so that the position and size of the crown shape data C can be easily adjusted.

  When the position or size of the crown shape data C is adjusted on the operation screen, the adjustment unit 502 uses the adjusted crown shape data C adjusted on the operation screen to the tooth shape data T. To associate. A screen example of the operation screen capable of adjusting the position and size of the crown shape data C will be described later with reference to FIG. 6A.

  In addition, the display control unit 503 performs control to display the mammeron shape data M whose size is adjusted with respect to the tooth shape data T in an adjustable manner. Specifically, for example, the display control unit 503 displays an operation screen on the display 206 that can adjust at least one of the position, size, and shape of the mammeron shape data M with respect to the tooth shape data T.

  At this time, for example, the display control unit 503 determines the arrangement position of the mammeron shape data M in accordance with the relative positional relationship of the mameron shape data M recorded with respect to the tooth shape data T, and the tooth shape data The mamelon shape data M may be displayed superimposed on T. Adjustment of the position, size, and shape of the mammel shape data M on the operation screen is performed by, for example, a user operation input using the input device 207.

  Thereby, the user can arbitrarily change the position, size, and shape of the mammel shape data M whose size is automatically adjusted with respect to the tooth shape data T. Further, since the tooth shape data T and the position of the center of gravity are displayed together when displaying the mamelon shape data M, 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 display the mammeron shape data M in a transparent manner when, for example, displaying the mameron shape data M superimposed on the tooth shape data T. This makes it easier for the user to check the position and size of the tooth shape data T superimposed on the Mamelon shape data M, so that the position and size of the Mamelon shape data M can be easily adjusted.

  When the position and size of the mammeron shape data M are adjusted on the operation screen, the adjustment unit 502 uses the adjusted mammeron shape data M adjusted on the operation screen to the tooth shape data T. To associate. An example of an operation screen that can adjust the position and size of the mamelon shape data M will be described later with reference to FIGS. 6B to 6D.

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

  In other words, the tooth composite data SD includes, for example, tooth shape data T, adjusted mammeron shape data M, and adjusted crown shape data C. This is information in which the relative positional relationship between the data M and the adjusted crown shape data C is defined.

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

  Further, the generation unit 504 may generate the mamelon shape data M ′ according to the tooth shape data T and the adjusted mamelon shape data M. Specifically, for example, when the tooth shape data T and the adjusted mamelon shape data M are combined, the generation unit 504 generates the tooth shape data out of the dentin represented by the adjusted mammeron shape data M. Mamelon shape data M ′ representing a three-dimensional shape of the dentin excluding a 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. Accordingly, the mamelon shape data M ′ is electronic data representing the three-dimensional shape of the dentin obtained by removing the portion of the patient's tooth (for example, a tooth that has been cut off) from the dentin represented by the adjusted mamelon shape data M.

  The generation unit 504 may convert the generated mameron shape data M ′ into NC (Numerical Control) data. Here, the NC data is numerical data for designating a tool to be used, a coordinate position at which the tool moves in a three-dimensional coordinate system, a speed, and the like in order to control the operation of the NC machine tool.

  That is, the generation unit 504 performs machining on a ceramic material or the like with an NC machine tool, and converts the material into NC data for creating a denture portion (mamelon shape portion) denture represented by the mammeron shape data M ′. In this case, the output unit 505 may output NC data obtained by converting the mamelon shape data M ′.

  Thereby, the denture part denture part except the part of the remaining patient's tooth | gear (for example, the tooth | gear which sharpened) can be created with NC machine tool. At this time, by using a ceramic material different from the ceramic material used for the enamel portion of the denture, it is possible to finally create a denture having a two-color structure like a natural tooth. Note that the dentin portion denture may be created by a casting method such as a lost wax manufacturing method on the basis of the mamelon shape data M ′.

  In addition, the generation unit 504 generates an outer shape represented by the adjusted crown shape data C based on the adjusted crown shape data C, and a boundary surface set to a predetermined amount from the outer shape represented by the adjusted crown shape data C. Crown shape data C ′ having the following may be generated. The predetermined amount can be arbitrarily set.

  For example, the predetermined amount is set to about several millimeters corresponding to the thickness of the tooth enamel, that is, the distance from the tooth incision to the mammeron. In addition, the actual shape of a mammelon of a tooth is often a shape in which several ridges are formed like a mountain. For this reason, for example, the generation unit 504 may change the predetermined amount according to the position so that several raised shapes are expressed on the boundary surface.

  In other words, the boundary surface set a predetermined amount inside from the outer shape represented by the adjusted crown shape data C is a boundary surface with dentin. Therefore, the crown shape data C ′ is electronic data representing the three-dimensional shape of the enamel obtained by removing 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 ′ into NC data. That is, the generation unit 504 performs machining on a ceramic material or the like with an NC machine tool, and converts it into NC data for creating an enamel denture represented by the crown shape data C ′. In this case, the output unit 505 may output NC data obtained by converting the crown shape data C ′.

  Thereby, the denture of the enamel part of a patient's tooth | gear can be created with NC machine tool. At this time, by using a ceramic material different from the ceramic material used for the dentin portion of the denture, it is possible to finally create a denture having a two-color structure like a natural tooth. Note that, based on the crown shape data C ′, the denture of the enamel portion may be created by a casting method such as a lost wax manufacturing method.

  For example, the information processing apparatus 101 may generate at least one of the above-described tooth synthesis data SD, mammelon shape data M ′, and crown shape data C ′.

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

  6A to 6E are explanatory diagrams illustrating screen transition examples 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 a tooth to be a denture creation target. Here, the teeth for which dentures are to be created are the left and right central incisors that have been shaved for the treatment of caries and periodontal disease. In FIG. 6A, other teeth below the tooth that is the object of creation of the denture are also displayed.

  In the operation screen OS1, for example, when the next button B1 is clicked by a user's operation input using the input device 207, as shown in (6-2), the tooth shape data T1, T2 are larger than each other. The crown shape data C with the adjusted height is displayed. Note that when the return button B2 is clicked on the operation screen OS1, it is possible to return to the previous operation screen and reselect the patient and acquire the tooth shape data T.

  6A, the operation screen OS2 displays crown shape data Ca and Cb whose sizes are adjusted for the tooth shape data T1 and T2, respectively. The crown shape data Ca is crown shape data C corresponding to the tooth number included in the tooth shape data T1. The crown shape data Cb is crown shape data C corresponding to the tooth number included in the tooth shape data T2.

  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, for example, the information processing apparatus 101 may pop-up an operation screen in which any one of the crown shape data C can be selected from the plurality of crown shape data C by a user operation input.

  When the crown shape data Ca and Cb are clicked by the user's operation input on the operation screen OS2, the position, size, and shape of the crown shape data Ca and Cb can be adjusted. At this time, the position, size, and shape can be adjusted while changing the viewpoint and confirming the three-dimensional shape of the tooth profile represented by the crown shape data Ca and Cb from various angles.

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

  In (6-3) of FIG. 6B, crown shape data Ca and Cb whose positions and sizes are adjusted by a 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 respectively adjusted. On the other hand, the mamelon shape data M whose size has been adjusted is displayed.

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

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

  On the operation screen OS3, when the user clicks on the mammeron shape data Ma, Mb by the operation input, the position, size, and shape of the mameron shape data Ma, Mb can be adjusted. At this time, the position, the size, and the shape can be adjusted while changing the viewpoint and confirming the three-dimensional shape of the dentin of the teeth represented by the respective mammeron shape data Ma, Mb from various angles.

  In FIG. 6C (6-5), the operation screen OS3 displays the mammeron shape data Ma and Mb whose sizes are adjusted by the user's operation input. Further, as shown in (6-6), the adjusted crown shape data Ca and Cb can be displayed transparently with respect to the mammeron shape data Ma and Mb by the user's operation input on the operation screen OS3.

  Thus, the user can adjust the positions and sizes of the mammeron shape data Ma and Mb while grasping the positions and sizes of the tooth outlines represented by the adjusted crown shape data Ca and Cb. In (6-6), the positions of the mammeron shape data Ma and Mb are adjusted.

  Further, as shown in (6-7), on the operation screen OS3, the mammeron shape data Ma and Mb can be transparently displayed with respect to the tooth shape data T1 and T2 by a user operation input. Thereby, the user can adjust the positions and sizes of the mammeron shape data Ma and Mb while grasping the positions and sizes of the teeth represented by the tooth shape data T1 and T2.

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

  In FIG. 6E (6-9), the operation screen OS4 associates the tooth shape data T1 and T2, the adjusted mammeron shape data Ma and Mb, and the adjusted crown shape data Ca and Cb. Tooth composite data SD is displayed. When the save button B3 is clicked by the user's operation input on the operation screen OS4, the tooth composite data SD can be saved in a storage device such as the memory 202 or the disk 204.

  It should be noted that the crown shape data C′a and C′b may be generated when the generation button B4 is clicked by the user's operation input on the operation screen OS2. Further, when the generation button B4 is clicked by the user's operation input on the operation screen OS3, the mameron shape data M'a and M'b may be generated.

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

  FIG. 7 is a flowchart of an example of a 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 apparatus 101 acquires tooth shape data T (step S701).

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

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

  Then, when the adjustment of the crown shape data C is completed (step S705: Yes), the information processing apparatus 101 corresponds to the tooth number that is a creation target of the denture included in the acquired tooth shape data T from the mameron DB 400. The mamelon shape data M to be acquired is acquired (step S706).

  Next, based on the tooth shape data T, the information processing apparatus 101 adjusts the size of the dentin of the specific tooth represented by the acquired mameron shape data M and associates it with the tooth shape data T (step S707). ). Next, the information processing apparatus 101 superimposes and displays the mammeron shape data M whose size has been adjusted with respect to the tooth shape data T (step S708).

  Then, the information processing apparatus 101 determines whether or not the adjustment of the mammeron shape data M has been completed (step S709). Here, the information processing apparatus 101 waits for the adjustment of the mammeron shape data M to end (step S709: No). When the adjustment of the mammeron shape data M is completed (step S709: Yes), the information processing apparatus 101 associates the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C. Tooth composite data SD is generated (step S710).

  Then, the information processing apparatus 101 outputs the generated tooth synthesis data SD (step S711), and ends a series of processes according to the flowchart. Thereby, it is possible to generate and output tooth shape data T of a two-layer structure in which the shape of the dentin and the shape of the outer shape are expressed with respect to the tooth to be a denture creation target.

  In step S <b> 710, the information processing apparatus 101 may generate the mammeron shape data M ′ according to the tooth shape data T and the adjusted mameron shape data M. In step S711, the information processing apparatus 101 may convert the generated mamelon shape data M ′ into NC data and output the NC data. In this case, the information processing apparatus 101 may not perform the processes of steps S702 to S705.

  In step S710, the information processing apparatus 101 determines that the outer shape represented by the adjusted crown shape data C and the outer shape represented by the adjusted crown shape data C are inward by a predetermined amount based on the adjusted crown shape data C. Crown shape data C ′ having a set boundary surface may be generated. In step S711, the information processing apparatus 101 may convert the generated crown shape data C ′ into 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, with reference to the crown DB 300, the acquired tooth shape data T represents a three-dimensional shape of a specific tooth shape. The crown shape data C can be superimposed and displayed with the size adjusted. Further, according to the information processing apparatus 101, referring to the mammer DB 400, for the acquired tooth shape data T, the size of the mamelon shape data M representing the three-dimensional shape of the dentin of a specific tooth is increased. It can be adjusted and superimposed. Then, according to the information processing apparatus 101, the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C are associated with each other to generate and output the combined tooth data SD. Can do. Thereby, the synthetic data SD of the double-layered tooth in which the shape of the dentin and the shape of the outer shape are expressed can be generated for the tooth to be created, and the appearance of the denture whose appearance is close to the natural tooth Can support creation.

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

  Further, according to the information processing apparatus 101, the crown shape data C, which is superimposed and displayed on the tooth shape data T, is displayed so that at least one of position, size, and shape can be adjusted. can do. Accordingly, 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 mammel shape data M, which is superimposed and displayed on the tooth shape data T, is displayed so that at least one of the position, size, and shape can be adjusted. can do. Thereby, the user can arbitrarily change the position, size, and shape of the mammel 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 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 superimposed on the crown shape data C, so that the position and size of the crown shape data C can be easily adjusted.

  Further, according to the information processing apparatus 101, when the mammeron shape data M is superimposed on the tooth shape data T, the mamelon shape data M can be transparently displayed. This makes it easier for the user to check the position and size of the tooth shape data T superimposed on the Mamelon shape data M, so that the position and size of the Mamelon shape data M can be easily adjusted.

  Further, according to the information processing apparatus 101, the mammeron 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 shape of the macelon can be generated. For example, by using an NC machine tool, a denture part denture excluding a part of a remaining patient's tooth (for example, a shaved tooth) is created. Is possible.

  Further, according to the information processing apparatus 101, 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 a predetermined amount inside based on the adjusted crown shape data C. Crown shape data C ′ having a boundary surface 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. Thereby, shape data representing an enamel portion obtained by removing a dentin portion from the external shape of the tooth can be generated. For example, a denture of an enamel portion of a patient's tooth can be created.

  For these reasons, according to the information processing apparatus 101 according to the first embodiment, it is possible to easily generate shape data that reproduces the shape of the tooth mammeron, and it is a dental technician with low skill and skill level. However, it is possible to create dentures that look close to natural teeth.

(Embodiment 2)
Next, the information processing apparatus 101 according to the second embodiment will be described. In addition, illustration and description are abbreviate | omitted about the location similar to the location demonstrated in Embodiment 1. FIG.

  Mamelon, the internal structure of the teeth, changes over time. For example, the mamelon is located at a position away from the incision in young people who have completed the growth period, and approaches the incision due to bite wear and the like with age, and is eventually exposed. Therefore, the form of mamelon is often different from person to person.

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

(Contents stored in the Mameron DB400)
FIG. 8 is an explanatory diagram (part 2) illustrating an example of the contents stored in the mameron DB 400. In FIG. 8, the mameron DB 400 stores therein mameron template information (for example, mameron template information 800-1 and 800-2) that represents a number and a plurality of mameron shape data in association with each other.

  The number is a number that identifies a tooth. The maceron shape data is electronic data representing the three-dimensional shape of the dentin of the tooth. However, the mamelon shape data includes data in which the tip portion (portion close to the cutting edge) is not processed.

  For example, the mameron template information 800-1 includes four mameron shape data M1-1, M1-2, M1-3, and M1-4 representing the dentin of the tooth with the number “t1”. The mamelon shape data M1-4 is information on the dentin shape other than the tip portion, and the tip portion is not processed. Note that the shape other than the tip portion of the mamelon shape data M1-4 is, for example, the same shape as any of the mamelon shape data M1-1 to M1-3.

(Functional configuration example of the information processing apparatus 101)
Next, a functional configuration example of the information processing apparatus 101 according to the second embodiment will be described. However, since the functional configuration example of the information processing apparatus 101 according to the second embodiment is the same as the functional configuration example of the information processing apparatus 101 according to the first embodiment, illustration thereof is omitted. Also, in the following description, a part of the processing contents of the functional units included in the information processing apparatus 101 according to the second embodiment is different from the processing contents of the functional units included in the information processing apparatus 101 according to the first embodiment. To do.

  The acquisition unit 501 acquires two-dimensional shape data indicating a dentin shape extracted from a captured image obtained by imaging a tooth. Here, the captured image is an image of teeth taken from outside or inside. To image a tooth from the outside is to image the tooth from the lip side. Moreover, imaging a tooth from the inside means imaging the tooth from the lingual side (palate side).

  The tooth to be imaged is a tooth that is a creation target of a denture or a tooth corresponding to the tooth. For example, the tooth to be imaged is the tooth of the patient before cutting for treatment. Further, when a tooth that is a creation target of a denture is damaged, the same type of tooth on the opposite side of the tooth may be an imaging target. For example, if the upper left central incisor is damaged, the upper right central incisor may be the imaging target.

  Note that the two-dimensional shape data indicating the shape of the dentin may be created manually based on, for example, a captured image of the tooth, and the dentinal image is obtained from the captured image of the tooth using an edge detection technique. It may be created by automatically extracting two-dimensional shape data indicating the shape of quality.

  The generation unit 504 generates the mamelon shape data M representing the three-dimensional shape of the dentin of a specific tooth based on the acquired two-dimensional shape data indicating the shape of the dentin. The specific tooth is a tooth for which a denture is to be created. Specifically, for example, the generation unit 504 generates the dentin shape of the specific tooth so that the tip portion of the mammelon shape data M of the specific tooth becomes the shape of the dentin indicated by the acquired two-dimensional shape data. Dentin mammeron shape data M is generated.

  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 mameron DB 400 shown in FIG. The raw mamelon shape data M is acquired. Then, the generating 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. .

  As a result, it is possible to generate the mamelon shape data M that reproduces the mamelon shape of the patient's teeth. In this case, the adjustment unit 502 associates the generated mamelon shape data M with the tooth shape data T by adjusting the size. In addition, the display control unit 503 performs control to display the mammeron shape data M whose size is adjusted with respect to the tooth shape data T in an adjustable manner. In addition, the generation unit 504 may generate, for example, tooth synthesis data in which the tooth shape data T and the adjusted maceron shape data M are associated with each other. In this case, the output unit 505 may output the combined tooth data in which the tooth shape data T and the adjusted maceron 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 mammeron shape data M ′ according to the tooth shape data T and the generated mameron shape data M. Then, the generation unit 504 may convert the generated mameron shape data M ′ into NC data.

(Generation example of mamelon shape data M)
FIG. 9 is an explanatory diagram showing an example of generation of the mamelon shape data M. In FIG. 9, a captured image 901 is a captured image obtained by capturing the patient's teeth from the outside (lip side). The two-dimensional shape data 902 is information indicating the two-dimensional shape of the dentin extracted from the captured image 901. Here, it is assumed that the number of the tooth for which the denture is to be created is “t1”.

  In this case, the generation unit 504 acquires, from the mammeron DB 400 (see FIG. 8), the mameron shape data M1-4 corresponding to the tooth number “t1” for which a denture is to be created and whose tip portion is not processed. . Then, the generation unit 504 processes the acquired mamelon 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, in the three-dimensional coordinate system, the generation unit 504 has a two-dimensional configuration in which the upper end portion of the two-dimensional shape data 902 is positioned about 5 mm from the upper end portion of the mammeron shape data M1-4. Shape data 902 is arranged. Next, the generation unit 504 adjusts the size by enlarging or reducing the two-dimensional shape data 902 so as to match the horizontal width of the mammeron shape data M1-4.

  Then, the generation unit 504 processes the mamelon shape data M1-4 so as to be cut out from the outside to the inside (or from the inside to the outside) using the adjusted two-dimensional shape data 902. Thereby, the mamelon shape data M1-4 which reproduces the mamelon form of the patient's tooth specified from the captured image 901 can be generated.

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

  10 and 11 are flowcharts illustrating an example of a 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 apparatus 101 acquires tooth shape data T (step S1001).

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

  Then, the information processing apparatus 101 adjusts the size of the specific tooth outline represented by the acquired crown shape data C based on the tooth shape data T, and associates it with the tooth shape data T (step S1004). Next, the information processing apparatus 101 superimposes and displays the crown shape data C associated with the tooth shape data T by adjusting the size (step S1005).

  Then, the information processing apparatus 101 determines whether or not the adjustment of the crown shape data C has been completed (step S1006). Here, the information processing apparatus 101 waits for the adjustment of the crown shape data C to end (step S1006: No). And the information processing apparatus 101 transfers to step S1101 shown in FIG. 11, when adjustment of crown shape data C is complete | finished (step S1006: Yes).

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

  Next, the information processing apparatus 101 adjusts the size of the dentin of the tooth 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 superimposes and displays the Mamelon shape data M that is associated with the tooth shape data T by adjusting the size (step S1104).

  Then, the information processing apparatus 101 determines whether or not the adjustment of the mammeron shape data M has been completed (step S1105). Here, the information processing apparatus 101 waits for the adjustment of the mamelon shape data M to end (step S1105: No). When the adjustment of the mammeron shape data M is completed (step S1105: Yes), the information processing apparatus 101 associates the tooth shape data T, the adjusted mameron shape data M, and the adjusted crown shape data C. Tooth composite data SD is generated (step S1106).

  Then, the information processing apparatus 101 outputs the generated tooth synthesis data SD (step S1107), and ends a series of processes according to this flowchart. As a result, the tooth shape data T representing the dentin shape extracted from the captured image obtained by imaging the patient's teeth can be generated and output for the tooth that is the target for creating 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 a dentin of a tooth extracted from a captured image obtained by capturing a tooth is acquired, and the acquired two-dimensional Based on the shape data, it is possible to generate the mammel shape data M of the dentin of a specific tooth. As a result, shape data that can reproduce the shape of the patient's teeth can be generated, and the creation of dentures that look close to natural teeth and are easily compatible with other teeth of the patient can be supported.

  In addition, according to the information processing apparatus 101, the shape of the tip portion obtained by looking at the outside or inside of the mammel shape data M in which the tip portion of a specific tooth represents the shape of an unprocessed dentin is acquired. By processing so as to have a dentin shape represented by the data, it is possible to generate the mammelon shape data M of the dentin of a specific tooth. As a result, portions other than the tip portion of the tooth can be supplemented with, for example, the shape of a typical dentin of the tooth, and the man-hour when generating shape data that reproduces the shape of the patient's teeth is reduced. be able to.

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

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

(Appendix 1) Acquire tooth shape data
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data in which the tooth shape data, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment are associated;
A data generation program that causes a computer to execute processing.

(Additional remark 2) The process which adjusts the magnitude | size of the shape data of the dentin of the said specific tooth | gear,
According to the tooth size represented by the tooth shape data, the dentin size represented by the dentin shape data of the specific tooth is enlarged or reduced,
The process of adjusting the size of the shape data of the specific tooth outline is as follows:
According to the tooth size represented by the tooth shape data, the size of the outer shape represented by the shape data of the specific tooth outer shape is enlarged or reduced.
The data generation program according to appendix 1, characterized in that:

(Supplementary Note 3) The dentin shape data of the specific tooth that is superimposed and displayed with the size adjusted with respect to the tooth shape data is displayed so that at least one of position, size, and shape can be adjusted. ,
The shape data of the external shape of the specific tooth that is superimposed and displayed with the size adjusted with respect to the tooth shape data is displayed so that at least one of position, size, and shape can be adjusted.
The data generation program according to appendix 1 or 2, characterized by the above.

(Appendix 4) Obtaining tooth shape data
Extracting two-dimensional shape data indicating the shape of the dentin of the tooth from the captured image of the tooth,
Based on the extracted two-dimensional shape data, generate tooth dentin shape data,
For the shape data of the teeth, the shape data of the generated dentin of the teeth is superimposed and displayed with the size adjusted,
Generating 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 that causes a computer to execute processing.

(Additional remark 5) The process which produces | generates the dentin shape data of the said tooth | gear is the said tooth so that the front-end | tip part of the dentin shape data of the said tooth may become the dentin shape which the acquired said two-dimensional shape data shows Generate dentin shape data,
The data generation program according to supplementary note 4, characterized by:

(Additional remark 6) The data generation program as described in any one of additional remarks 1-3 characterized by making the said computer perform the process which outputs the produced | generated synthetic | combination data of the said tooth | gear.

(Appendix 7) When displaying the dentin shape data of the specific tooth superimposed 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 specific tooth outline is superimposed on the tooth shape data, the shape data of the specific tooth outline is transparently displayed.
The data generation program according to supplementary note 3, characterized by:

(Appendix 8) The shape data representing the dentin shape of the tooth includes a finger-like structure.
The data generation program according to appendix 1, characterized in that:

(Appendix 9) Obtaining tooth shape data
Refer to the storage unit that stores the shape data of the dentin of the tooth, and according to the acquired tooth shape data, adjust the size of the shape data of the dentin of the specific tooth,
Generate shape data according to the tooth shape data and the dentin shape data of the specific tooth after the adjustment,
Convert the generated shape data into NC data and output it.
A data generation program that causes a computer to execute processing.

(Appendix 10) Obtaining tooth shape data
Refer to the storage unit storing the shape data of the tooth outline, and according to the acquired tooth shape data, adjust the size of the shape data of the specific tooth outline,
Based on the shape data of the contour of the specific tooth after the adjustment, the contour represented by the shape data of the contour of the specific tooth after the adjustment and the contour represented by the shape data of the contour of the specific tooth after the adjustment Generate shape data with the boundary surface set inside the fixed amount,
Convert the generated shape data into NC data and output it.
A data generation program that causes a computer to execute processing.

(Appendix 11) Obtaining tooth shape data,
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data in which the tooth shape data, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment are associated;
A data generation method, wherein a computer executes processing.

(Appendix 12) Obtaining tooth shape data
Refer to the storage unit that stores the shape data of the dentin of the tooth, and according to the acquired tooth shape data, adjust the size of the shape data of the dentin of the specific tooth,
Generate shape data according to the tooth shape data and the dentin shape data of the specific tooth after the adjustment,
Convert the generated shape data into NC data and output it.
A data generation method, wherein a computer executes processing.

(Appendix 13) Obtaining tooth shape data,
Refer to the storage unit storing the shape data of the tooth outline, and according to the acquired tooth shape data, adjust the size of the shape data of the specific tooth outline,
Based on the shape data of the contour of the specific tooth after the adjustment, the contour represented by the shape data of the contour of the specific tooth after the adjustment and the contour represented by the shape data of the contour of the specific tooth after the adjustment Generate shape data with the boundary surface set inside the fixed amount,
Convert the generated shape data into NC data and output it.
A data generation method, wherein a computer executes processing.

(Appendix 14) Obtaining tooth shape data
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data in which the tooth shape data, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment are associated;
An information processing apparatus having a control unit.

(Appendix 15) Obtaining tooth shape data
Refer to the storage unit that stores the shape data of the dentin of the tooth, and according to the acquired tooth shape data, adjust the size of the shape data of the dentin of the specific tooth,
Generate shape data according to the tooth shape data and the dentin shape data of the specific tooth after the adjustment,
Convert the generated shape data into NC data and output it.
An information processing apparatus having a control unit.

(Appendix 16) Obtaining tooth shape data
Refer to the storage unit storing the shape data of the tooth outline, and according to the acquired tooth shape data, adjust the size of the shape data of the specific tooth outline,
Based on the shape data of the contour of the specific tooth after the adjustment, the contour represented by the shape data of the contour of the specific tooth after the adjustment and the contour represented by the shape data of the contour of the specific tooth after the adjustment Generate shape data with the boundary surface set inside the fixed amount,
Convert the generated shape data into NC data and output it.
An information processing apparatus having a control unit.

101 Information processing apparatus 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 (11)

Get tooth shape data
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data in which the tooth shape data, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment are associated;
A data generation program that causes a computer to execute processing. The shape data representing the dentin shape of the tooth includes a finger structure,
The data generation program according to claim 1. The process of adjusting the size of the shape data of the dentin of the specific tooth is as follows:
According to the tooth size represented by the tooth shape data, the dentin size represented by the dentin shape data of the specific tooth is enlarged or reduced,
The process of adjusting the size of the shape data of the specific tooth outline is as follows:
According to the tooth size represented by the tooth shape data, the size of the outer shape represented by the shape data of the specific tooth outer shape is enlarged or reduced.
The data generation program according to claim 1 or 2, characterized by the above-mentioned. The shape data of the dentin of the specific tooth that is superimposed and displayed with the size adjusted with respect to the shape data of the tooth is displayed so that at least one of position, size, and shape can be adjusted,
The shape data of the external shape of the specific tooth that is superimposed and displayed with the size adjusted with respect to the tooth shape data is displayed so that at least one of position, size, and shape can be adjusted.
The data generation program according to claim 1, wherein the data generation program is a data generation program. Get tooth shape data
Extracting two-dimensional shape data indicating the shape of the dentin of the tooth from the captured image of the tooth,
Based on the extracted two-dimensional shape data, generate tooth dentin shape data,
For the shape data of the teeth, the shape data of the generated dentin of the teeth is superimposed and displayed with the size adjusted,
Generating 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 that causes a computer to execute processing. The processing for generating the dentin shape data is performed so that the tip portion of the dentin shape data has the dentin shape indicated by the acquired two-dimensional shape data. Generate shape data,
The data generation program according to claim 5.   5. The data generation program according to claim 1, wherein the computer is caused to execute a process of outputting the generated synthetic data of the teeth. 6. Get tooth shape data
Refer to the storage unit that stores the shape data of the dentin of the tooth, and according to the acquired tooth shape data, adjust the size of the shape data of the dentin of the specific tooth,
Generate shape data according to the shape data of the teeth and the shape data of the dentin of the specific tooth after the adjustment,
Convert the generated shape data into NC data and output it.
A data generation program that causes a computer to execute processing. Get tooth shape data
Refer to the storage unit storing the shape data of the tooth outline, and according to the acquired tooth shape data, adjust the size of the shape data of the specific tooth outline,
Based on the shape data of the contour of the specific tooth after the adjustment, the contour represented by the shape data of the contour of the specific tooth after the adjustment and the contour represented by the shape data of the contour of the specific tooth after the adjustment Generate shape data with the boundary surface set inside the fixed amount,
Convert the generated shape data into NC data and output it.
A data generation program that causes a computer to execute processing. Get tooth shape data
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data combining the tooth shape data, the dentin shape data of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment;
A data generation method, wherein a computer executes processing. Get tooth shape data
With reference to the storage unit storing the shape data representing the shape of the dentin of the tooth, the shape data of the dentin of the specific tooth is superimposed and displayed on the tooth shape data, with the size adjusted,
With reference to the storage unit storing the shape data of the tooth outline, the shape data of the specific tooth outline is superimposed and displayed on the tooth shape data with the size adjusted,
Generating tooth composite data in which the tooth shape data, the shape data of the dentin of the specific tooth after adjustment, and the shape data of the external shape of the specific tooth after adjustment are associated;
An information processing apparatus having a control unit.

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