Dental treatment support system

Abstract

To provide a new technique usable for support of treatment of orthodontics, etc.SOLUTION: A dental treatment support system includes: a measurement point information acquisition unit that acquires measurement point information representing a measurement point for orthodontic diagnosis on the basis of an image obtained by X-ray radiography of a head of a subject, a magnetic resonance image of the subject's head, or an image obtained by computed tomography of the subject's head; a position information acquisition unit that acquires image capturing position information representing a position of a front tooth, a molar tooth, or a jawbone of the subject when the image is captured on the basis of the head measurement point information; a planned position information acquisition unit that acquires planned position information representing a position when a tooth or the jawbone is moved; and a movement information generation unit that generates movement information representing an amount of movement from a position of the front tooth, the molar tooth, or the jawbone before the movement when the front tooth, the molar tooth or the jawbone is moved, on the basis of the measurement point information, the image capturing position information, and the planned position information.SELECTED DRAWING: None

Description

Technical Field

[0005] , , , ,

[0001] The present invention relates to support for dental treatment.

Background Art

[0002] Conventionally, orthodontic treatments have been performed for the purpose of aligning tooth arrangement and occlusion and obtaining correct occlusion (normal occlusion). In orthodontic treatment, a corrective device is used to slowly apply force to the teeth to move them, and sometimes the upper and lower jawbones are surgically moved to perform treatment aimed at obtaining an aesthetically and healthily occluded bite.

[0003] Therefore, a corrective orthodontic treatment plan for pre-examining whether it is good to move teeth and upper and lower jawbones in advance is important. In formulating a corrective orthodontic treatment plan, for example, cephalometric analysis is widely performed, and a support device therefor has also been proposed (for example, Patent Document 1). In cephalometric analysis, measurement points (landmarks) are set for a standard head X-ray photograph of a subject who requires corrective treatment. Next, based on the set measurement points, the angles formed by each plane and axis with the reference plane are measured, and the obtained angles are compared with the average values of normal occlusors to perform analysis, and the anatomical characteristics of malocclusors can be clarified to extract problems. In addition, cephalometric analysis may be used for clinical and research purposes as an evaluation of treatment during and after orthodontic treatment.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention provides a novel technique that can be used to support dental treatment.

Means for Solving the Problems

[0006] As mentioned above, treatment plans are formulated using cephalometric analysis. Conventional cephalometric analysis methods are used to identify problems in subjects (patients, etc.) with malocclusion, but it has been difficult to set specific goals for treatment planning. Furthermore, although several methods for setting treatment goals have been reported, they only involve numerical targets or drawings that reflect the individual practitioner's way of thinking, and have significant problems with accuracy and reproducibility, so have not been widely adopted. Therefore, as a result of diligent research, the inventor has discovered a novel method that allows for easier formulation of treatment plans, and has completed the present invention. This invention displays the positions of the upper and lower anterior and molars using numerical and image data, for example, by using multiple reference planes defined based on the anatomical structures of the upper and lower jawbones and the skull. According to this invention, it becomes possible to plan orthodontic treatment that takes into account the harmony of the maxillofacial region. Specifically, it becomes possible to more accurately grasp the shape of the jaw and the characteristics of the skull of the target patient and to create a treatment plan based on that. This invention can provide a more effective and efficient approach to orthodontic treatment. Furthermore, this invention can be applied to a wide range of dental treatments, including orthodontic treatment and prosthetic treatment.

[0007] The gist of this invention is as follows: [1] A measurement point information acquisition unit acquires measurement point information indicating measurement points corresponding to parts of the head based on images obtained from X-ray imaging of the target head, magnetic resonance imaging of the target head, or computed tomography of the target head. A position information acquisition unit acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, based on the aforementioned measurement point information. A unit for acquiring planned position information that obtains planned position information indicating the position when the front teeth, molars, or jawbone are moved, A dental treatment support system comprising: a movement information generation unit that generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before movement, when the front teeth, molars, or jawbone are moved, based on the measurement point information, the imaging position information, and the planned position information. [2] The dental treatment support system according to [1], wherein the movement information includes at least one of the following: information indicating the amount of tilting movement of an anterior tooth or molar; information indicating the amount of intrusion or extrusion of an anterior tooth or molar; information indicating the amount of parallel movement of an anterior tooth or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. [3] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of tilt movement of an anterior tooth or a molar as the amount of change in the angle of the tooth axis with respect to a reference plane that serves as the reference for the tilt. [4] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of intrusion or extrusion of an anterior tooth or a posterior tooth as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to a reference plane that serves as the basis for movement. [5] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of parallel movement of an anterior tooth or a molar as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along a reference plane that serves as the basis for movement. [6] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of tilt movement of the jawbone as the amount of change in angle between a reference plane that serves as the reference for tilt and a plane that is at least in contact with the jawbone. [7] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of intrusion or extrusion of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to a reference plane that serves as the basis for movement. [8] The dental treatment support system according to [2], wherein the movement information generation unit generates information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along a reference plane that serves as the reference for movement. [9] The system further includes a position identification support unit that generates position information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the measurement point information acquired by the measurement point information acquisition unit, The dental treatment support system according to any one of [1] to [8], wherein the location information acquisition unit acquires the imaging location information based on input from the user using the location information generation support information generated by the location identification support unit.

[10] A dental treatment support system according to any one of [1] to [8], wherein the measurement point information acquisition unit acquires the measurement point information based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray radiograph.

[11] A method of information processing performed by a computer, Based on images obtained from X-ray imaging of the target's head, magnetic resonance imaging of the target's head, or computed tomography of the target's head, measurement point information indicating measurement points corresponding to parts of the head is acquired. Based on the aforementioned measurement point information, imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging is acquired. Obtain planned position information that shows the position if the front teeth, molars, or jawbone were moved. The information processing method includes generating movement information that indicates the amount of movement from the position of the front teeth, molars, or jawbone before movement, when the front teeth, molars, or jawbone are moved, based on the measurement point information, the imaging position information, and the planned position information.

[12] The method according to

[11] , wherein the movement information includes at least one of the following: information indicating the amount of tilting movement of an anterior or posterior tooth; information indicating the amount of intrusion or extrusion of an anterior or posterior tooth; information indicating the amount of parallel movement of an anterior or posterior tooth; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone.

[13] The method according to

[12] , which generates information indicating the amount of tilting movement of an incisor or molar as the amount of change in the angle of the tooth axis with respect to a reference plane that serves as the basis for the tilt.

[14] The method according to

[12] , wherein information indicating the amount of intrusion or extrusion of an anterior or posterior tooth is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to a reference plane that serves as the basis for movement.

[15] The method according to

[12] , wherein information indicating the amount of parallel movement of an incisor or molar is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along a reference plane that serves as the basis for the movement.

[16] The method according to

[12] , wherein information indicating the amount of tilt movement of the jawbone is generated as the amount of change in angle between a reference plane that serves as the basis for the tilt and a plane that is at least in contact with the jawbone.

[17] The method according to

[12] , wherein information indicating the amount of depression or extrusion of the jawbone is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to a reference plane that serves as the basis for movement.

[18] The method according to

[12] , wherein information indicating the amount of parallel displacement of the jawbone is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along a reference plane that serves as the basis for the movement.

[19] The method further includes generating location information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the aforementioned measurement point information. A method for obtaining the imaging location information based on user input using the aforementioned location information generation support information, any one of

[11] to

[18] .

[20] Based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray, the method according to any one of

[11] to

[18] , wherein the measurement point information is acquired.

[21] A computer, Based on an image obtained by imaging a target head X-ray, a magnetic resonance image of the target head, or an image obtained by computed tomography of the target head, a measurement point information acquisition unit that acquires measurement point information indicating measurement points corresponding to parts of the head, Based on the measurement point information, a position information acquisition unit that acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, A planned position information acquisition unit that acquires planned position information indicating the position when the anterior teeth, molars, or jawbone are moved, A program for causing the computer to function as a movement information generation unit that generates movement information indicating the amount of movement from the position of the anterior teeth, molars, or jawbone before movement when the anterior teeth, molars, or jawbone are moved, based on the measurement point information, the imaging position information, and the planned position information.

[22] The program according to

[21] , wherein the movement information includes at least any one of information indicating the amount of inclination movement of the anterior teeth or molars, information indicating the amount of depression or protrusion of the anterior teeth or molars, information indicating the amount of parallel movement of the anterior teeth or molars, information indicating the amount of inclination movement of the jawbone, information indicating the amount of parallel movement of the jawbone, and information indicating the amount of depression or protrusion of the jawbone.

[23] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of inclination movement of the anterior teeth or molars as the amount of change in the angle of the tooth axis with respect to a reference plane serving as a reference for the inclination.

[24] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of depression or protrusion of the anterior teeth or molars as the length between the position of the tooth before movement and the position of the tooth when it is assumed to be moved, in a direction orthogonal to the reference plane serving as a reference for the movement.

[25] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of parallel movement of an anterior tooth or a molar as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along a reference plane that serves as the basis for movement.

[26] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of tilt movement of the jawbone as the amount of change in angle between a reference plane that serves as the reference for tilt and a plane that is at least in contact with the jawbone.

[27] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of depression or extrusion of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the basis for movement.

[28] The program according to

[22] , wherein the movement information generation unit generates information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along a reference plane that serves as the reference for movement.

[29] The computer is further configured to function as a position identification support unit, which generates position information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the measurement point information acquired by the measurement point information acquisition unit. The location information acquisition unit acquires the imaging location information based on user input using the location information generation support information generated by the location identification support unit, according to the program described in any one of

[21] to

[28] .

[30] A program according to any one of

[21] to

[28] , wherein the measurement point information acquisition unit acquires the measurement point information based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray radiograph. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a novel technology that can be used to support dental treatment. [Brief explanation of the drawing]

[0009] [Figure 1] This is a diagram showing an example configuration of the first embodiment. [Figure 2] This is a diagram showing an example configuration of a personal computer 1 according to the first embodiment. [Figure 3] This is a diagram showing the functional block of the first embodiment. [Figure 4] This figure shows the processing flow for generating measurement point information and trace line information in the first embodiment. [Figure 5] This figure shows an example of a screen related to the generation of measurement point information and trace line information in the first embodiment. [Figure 6] This figure shows an example of a screen related to the generation of measurement point information and trace line information in the first embodiment. [Figure 7] This figure shows an example of a screen related to the generation of measurement point information and trace line information in the first embodiment. [Figure 8] This figure shows an example of a screen related to the generation of measurement point information and trace line information in the first embodiment. [Figure 9] This diagram shows the processing flow related to the generation of movement information in the first embodiment. [Figure 10] This figure shows an example of a screen related to the generation of tooth movement information in the first embodiment. [Figure 11] This figure shows an example of a screen related to the generation of tooth movement information in the first embodiment. [Figure 12] This figure shows an example of a screen related to the generation of tooth movement information in the first embodiment. [Figure 13] This figure shows an example of a screen related to the generation of tooth movement information in the first embodiment. [Figure 14] This figure shows an example of a screen related to the generation of tooth movement information in the second embodiment. [Figure 15] This diagram shows the processing flow related to the generation of movement information in the second embodiment. [Figure 16] This diagram shows the processing flow related to the generation of movement information in the second embodiment. [Figure 17] This diagram shows the processing flow related to the generation of movement information in the second embodiment. [Figure 18] This figure shows a three-dimensional image obtained by imaging the head of a subject that can be used in other embodiments. [Modes for carrying out the invention]

[0010] [First Embodiment] One embodiment of the present invention will be described in detail below. The first embodiment relates to a dental treatment support system and includes a measurement point information acquisition unit, a location information acquisition unit, a planned location information acquisition unit, and a movement information generation unit. The measurement point information acquisition unit acquires measurement point information indicating the measurement points corresponding to parts of the head, based on the standard X-ray photograph of the target head. The position information acquisition unit acquires imaging position information, which indicates the position of the target incisor or molar at the time of imaging, based on the measurement point information. The planned position information acquisition unit acquires planned position information that indicates the position if the front teeth or molars were moved. The movement information generation unit generates movement information that indicates the amount of movement from the position of the front tooth or molar before the movement, based on the measurement point information, the position information at the time of imaging, and the planned position information, assuming that the front tooth or molar has been moved. Furthermore, the dental treatment support system of the first embodiment further includes a position identification support unit that generates position information generation support information to assist in identifying the position of the target tooth using the measurement point information acquired by the measurement point information acquisition unit. The position information acquisition unit acquires imaging position information based on input from the user using the position information generation support information generated by the position identification support unit.

[0011] In this specification, a standard cephalogram (also known as a head X-ray) refers to a two-dimensional standard radiograph taken from the side of the head, with the median sagittal plane as the reference plane. Furthermore, in this specification, a measurement point is also referred to as a landmark and means a reference point corresponding to each part included in the head. It is also used to represent a plane in which two or more measurement points exist, or a plane in which a reference point derived from two or more measurement points exists. The measurement point information includes information about measurement points whose positions are set for each object. For measurement points, those used in cephalometric analysis, for example, can also be used in the dental treatment support system of the first embodiment. Specific measurement points include S (Sella turcica, center of the sella turcica), N (Nasion, anterior point of the nasopranial suture), Or (Orbitale, lowest point of the orbital bone margin), ANS (Anterior Nasal Spine, tip of the anterior nasal spine), U1 (Upper 1, incisal margin of the maxillary central incisor), L1 (Lower 1, incisal margin of the mandibular central incisor), Po (Portion, upper margin of the extraosseous auditory canal), Pog (Pogonion, most prominent point of the mandibular symphysis), PNS (Posterior Nasal Spine, posterior point of the posterior nasal spine), Me (Menton, lowest point of the mandibular symphysis on the median sagittal section), D (D point, midpoint of the mandibular symphysis relative to the SN plane), UMo (Upper Molar, distal point of the crown of the maxillary first molar), LMo (Lower Molar, midpoint of the occlusal surface of the mandibular first molar), Go (Gonion, Examples include the point where the angle bisector of the angle between the plane of the lower border of the mandible and the plane of the posterior border of the mandibular ramus intersects the mandibular angle. Furthermore, examples of planes with two or more measurement points, or planes with reference points derived from these two or more measurement points, include the SN plane (the plane containing S and N), the Frankfurt plane (the FH plane, the plane containing Or and Po), the occlusal plane (the plane containing the midpoints of UMo and LMo and U1 and L1), the palatal plane (the plane containing ANS and PNS), and the mandibular lower border plane (the plane containing Go and Me). These are described, for example, in "Techniques for Reading Cephalograms to Improve Diagnostic Skills" by Hiroyuki Muramatsu (Quintessence Publishing, June 10, 2010) and "New Edition Dictionary of Orthodontics" by Akira Kameda (Quintessence Publishing, January 10, 2018). It should be noted that standard cephalometric radiographs are two-dimensional images, and the aforementioned planes are represented as lines. However, in fields such as orthodontics, these are also described as planes even when represented as lines. Therefore, in this specification, the concept of a plane includes lines represented in two-dimensional images and is generally referred to as a plane.

[0012] The imaging position information includes information indicating the position of the teeth when a standard head X-ray is taken. Specifically, the imaging position information can include traceline information, which shows the tracelines generated based on the standard head X-ray, as described later. Furthermore, the planned position information includes information indicating the position of the teeth if they were moved through treatment. Specifically, the planned position information can include information indicating the desired position of the teeth, as described later.

[0013] Movement information indicates the amount of movement from the tooth's original position when the tooth is moved. The unit of movement is either a unit of length (e.g., mm) or a unit of angle (e.g., degrees). Examples of teeth that generate movement information include the incisors (upper and lower incisors) and / or molars (upper and lower molars). The upper and lower incisors refer to the six teeth in the upper jaw and six teeth in the lower jaw, from the front to the left and right canines. Movement information for the incisors can be generated for one or more of these six teeth in the upper jaw and six teeth in the lower jaw. Furthermore, upper and lower molars refer to the four teeth in the upper jaw (first premolar, second premolar, first molar, and second molar) and the four teeth in the lower jaw. Molar movement information can be generated for one or more of these four teeth in the upper jaw and four teeth in the lower jaw.

[0014] Figure 1 is a schematic diagram of the dental treatment support system 100 according to the first embodiment. The dental treatment support system 100 of the first embodiment includes a personal computer 1 and a server S that is connected to the personal computer 1 via a network NW so that they can communicate with each other. Server S can be, for example, cloud-based, or it can be configured as appropriate, such as on-premises.

[0015] Figure 2 is a schematic diagram of the personal computer 1 according to the first embodiment. The system includes a processor 11, which is an arithmetic processing unit, memory 12, which is the main memory, and an SSD (Solid State Drive) 13, which is the auxiliary storage device. However, an HDD (Hard Disk Drive) can be used instead of the SSD, and the system is not particularly limited. The orthodontic treatment support system 100 also includes a network interface 14 for controlling communication with external units, a monitor 15, input devices 16 (keyboard, mouse, etc.), and a media reading device 17.

[0016] Figure 3 is a block diagram relating to the dental treatment support system 100 of the first embodiment. As shown in Figure 2, the dental treatment support system 100 consists of a display unit 20 that displays various information, an operation reception unit 22 that receives operations from users such as doctors, a storage unit 241 and an external storage unit 242 that store various information, a communication unit 26 that is connected to a network NW, and a control unit 30 that controls the operation of these units. Of these, the display unit 20, operation reception unit 22, storage unit 241, communication unit 26, and control unit 30 can be implemented by a personal computer 1, and the external storage unit 242 can be implemented by a server S.

[0017] Specifically, the display unit 20 is composed of, for example, the monitor 15 shown in Figure 2, and has the function of displaying various information based on control signals from the control unit 30. Furthermore, as shown in Figure 2, the operation reception unit 22 is composed of an input device 16 such as a keyboard, mouse, or touch panel that also serves as the display unit 20, and has the function of receiving input operations from the user and the function of outputting information indicating the received input content to the control unit 30.

[0018] Furthermore, the storage unit 241 is composed of a memory 12, an SSD 13, etc., and has the function of writing and storing various types of information, and the function of reading various types of information. Furthermore, the external storage unit 242 is configured as a server S and has the function of receiving requests from computer terminals connected via the network NW, writing various information in response to those requests, and sending that information back to the individual computer terminals. In the first embodiment, the external storage unit 242 stores image data of standard head X-ray photographs for each subject, a measurement point identification and trace line generation support program, a movement information generation support program, and generated measurement point information and trace line information.

[0019] Furthermore, the communication unit 26 is composed of network IF 14. Furthermore, the control unit 30 is composed of hardware such as the processor 11 and memory 12, and software such as a control program.

[0020] This control unit 30 has processing functions related to the exchange of various signals with the display unit 20, operation reception unit 22, storage unit 241, external storage unit 242, and communication unit 26, as well as a function to control the operation of each unit connected via a predetermined bus.

[0021] In the first embodiment, the control unit 30, display unit 20, and operation reception unit 22 correspond to the measurement point information acquisition unit, location information acquisition unit, and planned location information acquisition unit. The control unit 30 also corresponds to the movement information generation unit and location identification support unit.

[0022] Next, the processing flow in the first embodiment will be described. In the following explanation, we will use as an example a method for generating movement information for one or more of the maxillary central incisors, mandibular central incisors, maxillary first molars, and mandibular first molars.

[0023] First, we will explain the processing flow related to setting measurement points and generating trace lines, as shown in Figure 4. First, in step S101, when the control unit 30 of the device 100 receives a user operation (start command) to execute the measurement point identification and trace line generation support program, it executes the program to enable the device to accept user operations.

[0024] In step S102, the control unit 30 determines whether a standard head X-ray image is stored in the external storage unit 242. If a standard head X-ray image is not stored in the external storage unit 242, the control unit 30 terminates processing. On the other hand, if a standard head X-ray image is stored in the external storage unit 242, the control unit 30 displays an operation screen 5 on the display unit 20 that accepts user input related to the identification of measurement points as shown in Figure 5 (step S103).

[0025] As shown in Figure 5, this operation screen 5 displays a standard head X-ray image in the image display area 51 on the left side of the screen. In step S103, the control unit 30 displays the message "[Measure 1cm]" on the operation screen 5 and accepts instructions from the user to adjust the size (calibration, matching the aspect ratio of the screen with the aspect ratio of the photo). The input is made by pressing the button 57 which is labeled "Next". Based on the input of these instructions, the control unit 30 performs the processing related to size adjustment.

[0026] In step S104, as shown in Figure 6, the control unit 30 displays the message "Please specify the positions of S and N" on the operation screen 5. In step S105, the control unit 30 determines whether or not two arbitrary positions within the image display range 51 have been pressed. If neither button is pressed, the control unit 30 does not perform any processing and remains in standby mode. On the other hand, if two arbitrary positions within the image display range 51 are pressed, the control unit 30 displays circles corresponding to S and N superimposed on the pressed positions on the cephalic X-ray standard photograph, as shown in Figure 7, and also displays circles indicating measurement points other than S and N superimposed as temporary positions on the cephalic X-ray standard photograph where they are supposed to correspond (step S106).

[0027] The user visually determines whether the circle mark is displayed in the desired position, and if it is not in the desired position, performs an operation to move the circle mark. The control unit 30 obtains information indicating the instruction made by this operation via the operation reception unit 22 and corrects the position in which the circle mark is displayed. If all the circles are displayed in the desired positions, press the button to confirm the measurement point positions (the button 57 labeled "Next" in screen 5 shown in Figure 7).

[0028] When a position confirmation is input by pressing a button, the control unit 30 acquires coordinate information indicating the position of a circle on a standard head X-ray photograph as measurement point information indicating the position of the measurement point (step S107).

[0029] In step S108, as shown in Figure 8, the control unit 30 displays lines (trace lines) indicating the positions of the teeth and the contours of the face as temporary positions on a standard cephalometric X-ray photograph, based on the measurement point information. These trace lines displayed at temporary positions correspond to position information generation support information.

[0030] The user visually determines whether the trace line is displayed in the desired position, and if the trace line is not in the desired position, performs an operation to move or deform the line. Specifically, the user moves or deforms the trace line by manipulating points on the trace line. The control unit 30 acquires information indicating the instruction made by this operation via the operation reception unit 22 and corrects the position in which the trace line is displayed. If the trace line is displayed in the desired position, the user presses the button to confirm the trace line's position (button 59 in screen 5 shown in Figure 8, which displays the message "Complete").

[0031] When the position of the trace line is confirmed by pressing a button, the control unit 30 acquires the trace line on the head X-ray standard photograph as trace line information at the time of imaging (corresponding to position information at the time of imaging), stores it in the external storage unit 242, and terminates the process (step S109).

[0032] Next, we will explain the processing flow related to the generation of movement information shown in Figure 9. First, in step S201, when the control unit 30 of the device 100 receives an operation (start command) from the user to execute the movement information generation support program, it executes the program to make it possible to receive user operations.

[0033] In step S202, the control unit 30 determines whether the head X-ray standard photograph, measurement point information, and trace line information are stored in the external storage unit 242. If a standard head X-ray image is not stored in the external storage unit 242, or if only a standard head X-ray image is stored in the external storage unit 242, the control unit 30 terminates processing. On the other hand, if the head X-ray standard photograph, measurement point information, and trace line information are stored in the external storage unit 242, the control unit 30 displays an operation screen 6 on the display unit 20 that accepts user operations related to the generation of movement information, as shown in Figure 10 (step S203).

[0034] As shown in Figure 10, this operation screen 6 displays a standard cephalometric radiograph in the image display area 61 on the left side of the screen, and trace lines are displayed superimposed on the standard cephalometric radiograph. Furthermore, 63 is a table showing the amount of movement. Furthermore, 65 consists of multiple checkboxes that indicate the display of a plane based on measurement point information, superimposed onto the standard head X-ray image. Furthermore, button 67 is for inputting instructions for generating tooth tilt movement, and button 69 is for inputting instructions for generating tooth intrusion or extrusion, and tooth parallel movement. Hereafter, intrusion or extrusion and parallel movement will also be collectively referred to as distance movement.

[0035] In step S204, the control unit 30 determines whether or not an instruction to generate a tooth tilt movement amount as movement information has been input by pressing the button 67 labeled "tooth tilt" on the operation screen 6.

[0036] If the control unit 30 determines that no instruction has been given to generate the amount of tooth tilt movement, it determines whether or not an instruction has been given to generate the amount of tooth distance movement as movement information by pressing the button 69 labeled "tooth movement" on the operation screen 6 (step S211).

[0037] If it is determined in step S211 that no instruction has been entered to generate a tooth distance movement amount, the control unit 30 does not perform any processing and returns to S204.

[0038] In step S204, if it is determined that an instruction to generate a tooth tilt movement amount has been input, the control unit 30 acquires information indicating the position to which the tooth should be moved as planned position information via the operation reception unit 22, as shown in Figure 11, and deforms the trace line to display the tooth movement (step S205). In Figure 11, the position of the teeth before movement is shown with a dashed line, and the position of the teeth after movement is shown with a solid line. Furthermore, the control unit 30 calculates the amount of tooth movement (tilt movement) in units of angles based on the trace line information, the planned position information, and the measurement point information stored in the external storage unit 242, and displays it in Table 63 on the operation screen 6 (step S206).

[0039] In step S211, if it is determined that an instruction to generate a tooth distance movement amount has been input, the control unit 30 acquires information indicating the position to which the tooth should be moved as planned position information via the operation reception unit 22, as shown in Figures 12 and 13, and deforms the trace line to display the tooth movement (step S212). Furthermore, the control unit 30 generates the amount of tooth intrusion or extrusion, and / or the amount of tooth parallel movement, with length as the unit, based on the trace line information, the planned position information, and the measurement point information stored in the external storage unit 242, and displays it in Table 63 on the operation screen 6 (step S213).

[0040] Furthermore, the amount of displacement is calculated using highly reproducible anatomical structures in the maxillofacial region, such as the Frankfurt plane and SN plane, as well as the occlusal plane, mandibular lower border plane, and palatal plane, which are commonly used in cephalometric analysis and are depicted in standard cephalometric radiographs. The specific processing for this calculation can also be carried out by executing the movement information generation support program, and the measurement points and reference plane used for the calculation can also be set in advance in the program.

[0041] For example, the amount of tooth tilt movement can be generated as the change in the angle of the tooth axis with respect to a reference plane that serves as the basis for the tilt. Specifically, the amount of tooth tilt movement (unit: angle) can be obtained by calculating the change in angle of the tooth axis (the axis along the direction in which the tooth is growing, the long axis of the tooth. For example, in the case of the maxillary central incisor, it is the straight line on which measurement point U1 and measurement point U1R (Upper 1 Root, apex of the maxillary central incisor) lie, and in the case of the mandibular central incisor, it is the straight line on which measurement point L1 and measurement point L1R (Lower 1 Root, apex of the mandibular central incisor) lie) relative to the reference plane, both before the tooth is moved (at the time of imaging) and after the tooth has been moved. The reference plane can be set appropriately considering the type of tooth, etc. Examples include the Frankfurt plane, SN plane, occlusal plane, mandibular lower border plane, or palatal plane. Which reference plane to use can be set in advance, for example, in a movement information generation support program. Furthermore, the amount of tilt movement can be calculated using only the change in the angle of the tooth axis before and after tooth movement. Figure 11 also shows this value (in Figure 11, the maxillary anterior teeth: 9.5° is shown as an example). On the other hand, by using the aforementioned reference plane for calculation, it is also possible to evaluate the tilt movement of the anterior and posterior teeth relative to the skull obtained by the treatment plan, which is preferable.

[0042] For example, in Figure 11, the angle of the tooth axis of the maxillary central incisor relative to the FH plane, which was selected as the reference plane for the tooth axis before tooth movement, was 110.68 degrees, and the angle of the tooth axis relative to the FH plane when the tooth is moved was 120.68 degrees. In this case, the maxillary central incisor is calculated to have moved 10 degrees labially (shown as U1toFH:10° in Figure 11).

[0043] Furthermore, the amount of tooth translation can be calculated as the length between the tooth's position before movement and its position after movement, in a direction along a reference plane that serves as the basis for the movement. Specifically, the amount of parallel movement of a tooth (unit: length) can be calculated by using a pre-set reference plane (X-axis) and a predetermined part of the tooth (reference point). The amount of movement of the tooth's reference point in a direction parallel to the reference plane, both before and after the tooth is moved, can be calculated as the amount of parallel movement.

[0044] The reference plane can be, for example, the Frankfurt plane, the SN plane, the occlusal plane, the mandibular lower border plane, or the palatal plane. Furthermore, the tooth reference point can be set appropriately depending on the tooth type, but for example, it can be set to the center of the root. The center of the root is also called the rotation center (resistance center), and is generally considered to be 1 / 2 to 1 / 3 of the apical rule of the root. For example, in the movement information generation support program, the center of the root can be pre-set as 1 / 2 of the apical rule of the root, and its specific position can be defined using trace line information that indicates the position of the tooth at the time of imaging. When calculating the amount of parallel movement, the position of the tooth before movement is set to 0, and forward (labial) movement is assigned a sign of +, while backward (lingual) movement is assigned a sign of - to distinguish between them.

[0045] For example, in Figure 12, we will explain using the case where the reference plane, pre-set in the movement information generation support program, is the occlusal plane, and the amount of parallel movement is generated based on the center of the root of the maxillary central incisor. In this case, Figure 12 calculates that after moving the tooth, it has moved 10 mm lingually along the occlusal plane.

[0046] Furthermore, the amount of tooth intrusion or extrusion is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to the reference plane that serves as the basis for movement. Specifically, the amount of tooth intrusion or extrusion (in units of length) can be obtained by calculating the length in a direction perpendicular to the reference plane between a predetermined part of the tooth before movement (reference point) and the reference point of the tooth after movement. In this case, the movement of the tooth toward the root can be expressed as the amount of intrusion (for example, with a negative sign (-) and the value before movement set to 0), and the movement of the tooth toward the crown can be expressed as the amount of extrusion (for example, with a positive sign (+) and the value before movement set to 0).

[0047] The reference plane can be set according to the type of tooth, for example, it can be the FH plane (Frankfurt plane), the mandibular lower border plane, or the palatal plane. Furthermore, the tooth reference point is not particularly limited and can be set according to the tooth type, etc. Examples include the tip of the tooth crown (represented as U1 for maxillary central incisors, L1 for mandibular central incisors, UMo for maxillary first molars, and LMo for mandibular first molars based on the measurement point) and the center of the tooth root (represented as CR based on the measurement point).

[0048] For example, consider Figure 13, where the reference plane is the FH plane, and the amount of intrusion or extrusion is calculated based on the center of the root of the maxillary central incisor. In the example in Figure 13, the tooth is moving towards the root in a direction perpendicular to the FH plane, so the intrusion movement is calculated to be -2.2 mm.

[0049] Furthermore, the incisal edge, root, crown, cervical area, gingival margin, contact points, occlusal surface, interdental papilla, gingival sulcus, alveolar crest, apex of the root, apical foramen, and the rotational center of tooth inclination can also be used as reference points for tooth translation and tooth intrusion or extrusion. The positions of these can also be defined based on measurement point information or trace line information. Furthermore, the amount of tooth translation and the amount of tooth intrusion or extrusion can be predetermined, for example, in a movement information generation support program, to determine whether to use a reference point or a reference plane.

[0050] As described above, according to the first embodiment, for example, when planning orthodontic treatment, it becomes possible to formulate a treatment plan more quickly and accurately. Furthermore, monitoring the progress of treatment can also be made more efficient. Furthermore, it can be expected to contribute to improving the overall workflow by simplifying setup instructions for dental technicians, and to enhancing collaboration among physicians.

[0051] [Second Embodiment] Next, a second embodiment will be described. Components common to the first embodiment will be denoted by the same reference numerals and their descriptions will be omitted.

[0052] In the second embodiment, movement information can be generated not only for the anterior teeth and molars but also for the jawbone (upper and lower jawbones). This makes it easier to create treatment plans, for example, when performing surgical orthodontic treatment. In the second embodiment, the imaging position information includes information indicating the position of the jawbone in addition to information indicating the position of the teeth when a cephalometric radiograph is taken. Although information indicating the position of the jawbone is also acquired as imaging position information in the first embodiment, it is not necessary to acquire information indicating the position of the jawbone in the first embodiment. Furthermore, in the second embodiment, the position information generation support information includes information on the position of the temporary jawbone in addition to information on the position of the temporary teeth. Although the position information generation support information also includes information indicating the position of the temporary jawbone in the first embodiment already described, it is not necessary to include information indicating the position of the temporary jawbone in the first embodiment. Furthermore, in the second embodiment, the planned position information can include information indicating the position of the jaw in the case where the jaw is moved in addition to information indicating the position of the teeth when the teeth are moved by treatment. Specifically, the planned position information can include information indicating instructions for the position where the teeth are to be moved and information indicating instructions for the position where the jawbone is to be moved.

[0053] Furthermore, in the second embodiment, the movement information may include, in addition to information indicating the amount of movement from the position of the tooth before movement if the tooth is moved, information indicating the amount of movement from the position of the jawbone before movement if the jawbone is moved. Furthermore, in the second embodiment as well, whether to use a reference point or a reference plane can be predetermined, for example, in a movement information generation support program.

[0054] Figure 14 shows the operation screen related to the generation of movement information in the second embodiment. This operation screen 6, similar to the first embodiment, has an image display area 61 on which a standard head X-ray photograph is displayed, a table 63 showing the amount of movement, a button 67 for inputting instructions for generating tooth tilt movement amounts, and a button 69 for inputting instructions for generating tooth movement amounts. In addition, in the second embodiment, the operation screen 6 has a toggle button 62 for inputting an instruction to execute a process that can generate a movement amount for the jawbone (hereinafter also referred to as surgical orthodontic mode), a button 64 for inputting an instruction to generate a tilt movement amount for the jawbone, and a button 66 for inputting an instruction to generate a movement amount for the jawbone.

[0055] The processing flow for generating movement information in the second embodiment shown in Figures 15-17 will be explained below.

[0056] First, in step S301, when the control unit 30 of the device 100 receives an operation (start instruction) from the user to execute the movement information generation support program, it executes the program to make it possible to receive user operations.

[0057] In step S302, the control unit 30 determines whether an instruction to execute surgical orthodontic mode has been input by operating the toggle button 62 on the operation screen 6.

[0058] If it is determined that no instruction to execute surgical orthodontic mode has been entered, the process proceeds to S303 and continues. Note that the processing in steps S303 to S310 is the same as the processing in steps S202 to S206 and S211 to S213 related to movement information generation in the first embodiment, so the explanation is omitted.

[0059] If it is determined in step S302 that an instruction to execute surgical orthodontic mode has been entered, the process proceeds to step S311. The processes in steps S311-S315, S317, and S318 in Figure 16 are the same as the processes in steps S202-S206, S212, and S213, so their explanation is omitted.

[0060] If it is determined in step S316 that no instruction to generate tooth distance movement amount has been entered, the control unit 30 proceeds to S321 to determine whether or not an instruction to generate jawbone tilt movement amount has been entered. If it is determined in step S316 that an instruction to generate tooth distance movement amount has been entered, the control unit 30 proceeds to step S317 to perform processing.

[0061] In step S321, if it is determined that an instruction to generate an amount of tilt movement of the jawbone has been input, the control unit 30 obtains information indicating the position to which the jawbone should be moved via the operation reception unit 22, and deforms the trace line to display the movement of the jawbone (step S322). Furthermore, the control unit 30 calculates the amount of tilt movement of the jawbone in terms of angles, based on the trace line information, the information indicating the position to which the jawbone should be moved, and the measurement point information stored in the external storage unit 242, and displays it in Table 63 on the operation screen 6 (step S323).

[0062] On the other hand, if it is determined in S321 that no instruction has been given to generate the amount of tilt movement of the jawbone, the process proceeds to S324, where the control unit 30 determines whether an instruction has been given to generate the amount of distance movement of the jawbone. If it is determined that no such instruction has been given, the control unit 30 returns to S313 and waits for an instruction to be entered.

[0063] In step S324, if it is determined that an instruction to generate a distance movement amount for the jawbone has been input, the control unit 30 obtains information indicating the position to which the jawbone should be moved via the operation reception unit 22, and deforms the trace line to display the movement of the jawbone (step S325). Furthermore, the control unit 30 calculates the distance moved by the jawbone in units of length based on the trace line information, the information indicating the position to which the jawbone should be moved, and the measurement point information stored in the external storage unit 242, and displays it in Table 63 on the operation screen 6 (step S326).

[0064] The amount of jawbone movement can also be calculated using highly reproducible anatomical structures in the maxillofacial region, as depicted in standard cephalometric radiographs such as the Frankfurt plane, SN plane, occlusal plane, mandibular lower border plane, and palatal plane, which are commonly used in cephalometric analysis.

[0065] The tilt movement (unit: angle) is generated as the amount of change in angle between the reference plane that serves as the basis for the tilt and the plane that is at least in contact with the jawbone. Specifically, the amount of tilt movement of the jawbone (unit: angle) can be obtained by calculating the change in angle of the plane that is at least in contact with the jawbone relative to the reference plane, both before the jawbone is moved (during imaging) and after the jawbone has been moved. In this specification, "a plane that is in contact with the jawbone at least" means a plane that intersects with the jawbone or is in contact with the jawbone at one or more points.

[0066] Examples of reference planes include the Frankfurt plane and the SN plane. Furthermore, examples of planes that are in contact with the jawbone include the palatal plane (in the case of the maxilla) and the plane of the lower border of the mandible (in the case of the mandible). Furthermore, the amount of tilt movement may also be calculated by considering the change in angle of the plane that is in contact with the jawbone before and after the movement. While the amount of tilt movement can be calculated using only the change in angle of the plane that is at least in contact with the jawbone before and after movement, it is preferable to use the aforementioned reference plane for the calculation, as this allows for evaluation of the angle of the maxilla or mandible relative to the skull obtained through the treatment plan.

[0067] The amount of parallel displacement of the jawbone (unit: length) is calculated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in the direction along the reference plane.

[0068] When calculating the amount of parallel displacement of the maxilla, a reference plane (X-axis) is set, and then the amount of change in the X-axis direction between the position of a predetermined part (reference point) on the maxilla before movement and the position after movement is calculated as the amount of parallel displacement. Reference planes can be determined based on anatomy, taking into consideration factors such as the degree of reproducibility in the maxillofacial region. Specifically, examples include the occlusal plane, Frankfurt plane, and SN plane. Furthermore, reference points can be appropriately set on the maxilla, and their positions can be defined based on measurement point information or trace line information. For example, reference points can include ANS, PNS, point A (Point A, the deepest point on the midline sagittal section between the anterior nasal spine and the maxillary alveolar margin), U1, U1R, UMo, Umo(D), etc. Furthermore, forward (labial) movement can be distinguished by assigning a sign (+) and backward (lingual) movement (-).

[0069] When calculating the amount of parallel displacement (unit: length) of the mandible, a reference plane (X-axis) is set, and then the amount of change in the X-axis direction between the position of a predetermined part (reference point) on the mandible (which is arbitrarily set) before movement and the position after movement is calculated as the amount of parallel displacement. Reference planes can be determined based on anatomy, taking into consideration factors such as the degree of reproducibility in the maxillofacial region. Specifically, examples include the occlusal plane, Frankfurt plane, and SN plane. Furthermore, a reference point can be appropriately set on the mandible, and its position can be defined based on measurement point information or trace line information. For example, as reference points, Me, Gn (Gnation, the point where the two lines forming the angle between the Facial plane (N-Pog) and the plane of the lower mandibular border intersect at the mandibular symphysis), Pog, PM (Protuberance menti, the upper edge of the mental protuberance), Point B (Point B, the deepest point on the median sagittal section between the anterior edge of the mandibular symphysis and the mandibular alveolar border), Point D (D point, the midpoint of the mandibular symphysis relative to the SN plane), CD (Condylion, the uppermost posterior point of the mandibular condyle), CdE (Condyle end, the posteriormost point of the mandibular condyle), Ar (Articular, the intersection of the posterior edge of the mandibular ramus and the lower edge of the occipital bone base), Go(P) (Posterier Gonion, the point where the posterior edge of the mandibular angle touches the plane of the posterior mandibular ramus), Go, Go(L) (Lower Gonion (the point where the lower edge of the mandibular angle touches the plane of the lower mandibular border)), Xi (Ricketts, The midpoint of the mandibular ramus, the mandibular foramen, etc., can be used. Furthermore, forward (labial) movement can be distinguished by assigning a sign (+) and backward (lingual) movement (-).

[0070] The amount of intrusion or extrusion (in units of length) of the upper and lower jawbones is calculated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the basis for the movement. Specifically, the amount of intrusion or extrusion (in units of length) of the upper and lower jawbones can be obtained by calculating the change in length between a reference plane and a predetermined point (reference point) arbitrarily set on each of the upper and lower jawbones, in a direction perpendicular to the reference plane. Reference points can be set arbitrarily, and their positions can be defined based on measurement point information or trace line information. For example, in the case of the maxilla, points such as ANS, PNS, A point U1, U1R, UMo, Umo(D), etc. can be used. Similarly, in the case of the mandible, points such as Me, Gn, Pog, PM, B point, D, CD, CdE, Ar, Go(P), Go, Go(L), Xi, mandibular foramen, etc. can be used. Furthermore, the reference plane can also be, for example, the Frankfurt plane or the SN plane. In this case, the movement of the upper and lower jaws toward the vertex of the head can be expressed as the amount of depression (for example, with a negative sign (-) and the value before movement set to 0), and the movement of the upper and lower jaws toward the trunk can be expressed as the amount of extrusion (for example, with a positive sign (+) and the value before movement set to 0).

[0071] In the second embodiment, it is possible to generate the amount of jawbone movement, as well as the amount of anterior and posterior tooth movement that reflects the jawbone movement. Figure 14 shows the calculated sum of the inclination, intrusion, extrusion, and parallel movement of the upper and lower anterior and posterior teeth (sum of pre- and post-operative movement) after the movement of the upper and lower jawbones, using the Frankfurt plane as the reference plane for the maxilla and the SN plane as the reference plane for the mandible.

[0072] Although the first and second embodiments have been described above, the present invention can be implemented in other embodiments and is not particularly limited. For example, regarding the setting of measurement points, in the first embodiment, after the positions of measurement points S and N are input, the positions of the other measurement points are displayed as provisional positions. However, the system is not limited to this, and the user may specify and input the positions of all measurement points. Furthermore, on the screen displaying movement information, in addition to the trace lines, lines indicating a plane based on measurement point information may be superimposed on the standard head X-ray image. Furthermore, on the screen displaying the movement information, in addition to the trace lines, lines indicating the basis for calculating the tooth movement information may be overlaid on the cephalometric radiograph. Furthermore, in the first and second embodiments, a standard head X-ray photograph is given as an image obtained by imaging with a head X-ray radiograph. However, it is not limited to a standard head X-ray photograph; for example, other two-dimensional or three-dimensional images obtained by imaging with a head X-ray radiograph may also be used. As an example, Figure 18 shows a three-dimensional image obtained by imaging with a head X-ray radiograph. Furthermore, the images used to obtain measurement point information in this invention may be images obtained from head X-ray radiographs, as well as images obtained from magnetic resonance imaging (MRI) or computed tomography (CT). The images obtained from MRI or CT may also be two-dimensional or three-dimensional images. Furthermore, while the first and second embodiments configure the treatment support system 100 to include a personal computer 1 and a server S, the system is not limited to this configuration. For example, it may include multiple personal computers, or it may consist of only one personal computer. [Explanation of Symbols]

[0073] 1: Personal computer, NW: Network, S: Server 11: Processor, 12: Memory, 13: SSD, 14: Network Interface, 15: Monitor, 16: Input Device, 17: Media Reader 20: Display unit, 22: Operation reception unit, 241: Storage unit, 242: External storage unit, 26: Communication unit, 30: Control unit 100: Dental Treatment Support System

Claims

1. A measurement point information acquisition unit acquires measurement point information indicating measurement points corresponding to parts of the head based on images obtained from X-ray imaging of the target head, magnetic resonance imaging of the target head, or computed tomography of the target head. A position information acquisition unit acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, based on the aforementioned measurement point information. A unit for acquiring planned position information that obtains planned position information indicating the position when the front teeth, molars, or jawbone are moved, The system includes a movement information generation unit that generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before movement, based on the measurement point information, the imaging position information, and the planned position information, The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The aforementioned movement information generation unit, The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (a) To generate information indicating the amount of tilt movement of an incisor or molar as the amount of change in the angle of the tooth axis with respect to the reference plane that serves as the reference for the tilt, (b) Information indicating the amount of intrusion or extrusion of an incisor or molar is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and A dental treatment support system that performs at least one of the following: (c) generating information indicating the amount of parallel movement of an incisor or molar as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along the reference plane that serves as the reference for movement.

2. The dental treatment support system according to claim 1, wherein the movement information generation unit generates information indicating the amount of tilt movement of the jawbone as the amount of change in angle between the reference plane which serves as the reference for tilt and a plane that is at least in contact with the jawbone.

3. The dental treatment support system according to claim 1, wherein the movement information generation unit generates information indicating the amount of jawbone intrusion or extrusion as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane which serves as the reference for movement.

4. The dental treatment support system according to claim 1, wherein the movement information generation unit generates information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane which serves as the reference for movement.

5. The system further includes a position identification support unit that generates position information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the measurement point information acquired by the measurement point information acquisition unit, The dental treatment support system according to any one of claims 1 to 4, wherein the location information acquisition unit acquires the imaging location information based on input from the user using the location information generation support information generated by the location identification support unit.

6. The dental treatment support system according to any one of claims 1 to 4, wherein the measurement point information acquisition unit acquires the measurement point information based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray radiograph.

7. A method of information processing performed by a computer, Based on images obtained from X-ray imaging of the target's head, magnetic resonance imaging of the target's head, or computed tomography of the target's head, measurement point information indicating measurement points corresponding to parts of the head is acquired. Based on the aforementioned measurement point information, imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging is acquired. Obtain planned position information that shows the position if the front teeth, molars, or jawbone were moved. Based on the measurement point information, the imaging position information, and the planned position information, the system generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before the movement, assuming that the front teeth, molars, or jawbone have been moved. The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (a) To generate information indicating the amount of tilt movement of an incisor or molar as the amount of change in the angle of the tooth axis with respect to the reference plane that serves as the reference for the tilt, (b) Information indicating the amount of intrusion or extrusion of an incisor or molar is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and (c) The information processing method, which performs at least one of the following: generating information indicating the amount of parallel movement of an incisor or molar as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along the reference plane that serves as the reference for movement.

8. The method according to claim 7, wherein information indicating the amount of tilt movement of the jawbone is generated as the amount of change in angle between the reference plane, which serves as the reference for the tilt, and a plane that is at least in contact with the jawbone.

9. The method according to claim 7, wherein information indicating the amount of depression or extrusion of the jawbone is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the reference for movement.

10. The method according to claim 7, wherein information indicating the amount of parallel displacement of the jawbone is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane that serves as the reference for movement.

11. The method further includes generating location information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the aforementioned measurement point information. The method according to any one of claims 7 to 10, wherein the imaging location information is acquired based on user input using the aforementioned location information generation support information.

12. The method according to any one of claims 7 to 10, wherein measurement point information is acquired based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray radiograph.

13. Computers, A measurement point information acquisition unit acquires measurement point information indicating measurement points corresponding to parts of the head based on images obtained from X-ray imaging of the target head, magnetic resonance imaging of the target head, or computed tomography of the target head. A position information acquisition unit acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, based on the aforementioned measurement point information. A unit for acquiring planned position information that obtains planned position information indicating the position when the front teeth, molars, or jawbone are moved, A program for functioning as a movement information generation unit that generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before movement, when the front teeth, molars, or jawbone are moved, based on the measurement point information, the imaging position information, and the planned position information, The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The aforementioned movement information generation unit, The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (a) To generate information indicating the amount of tilt movement of an incisor or molar as the amount of change in the angle of the tooth axis with respect to the reference plane that serves as the reference for the tilt, (b) Information indicating the amount of intrusion or extrusion of an incisor or molar is generated as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and (c) The program performs at least one of the following: generating information indicating the amount of parallel movement of an incisor or molar as the length between the position of the tooth before movement and the position of the tooth after movement, in a direction along the reference plane that serves as the basis for movement.

14. The program according to claim 13, wherein the movement information generation unit generates information indicating the amount of tilt movement of the jawbone as the amount of change in angle between the reference plane which serves as the reference for the tilt and a plane that is at least in contact with the jawbone.

15. The program according to claim 13, wherein the movement information generation unit generates information indicating the amount of depression or extrusion of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane which serves as the reference for movement.

16. The program according to claim 13, wherein the movement information generation unit generates information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane which serves as the reference for movement.

17. The computer is further configured to function as a position identification support unit, which generates position information generation support information to assist in identifying the position of the target anterior teeth, molars, or jawbone using the measurement point information acquired by the measurement point information acquisition unit. The program according to any one of claims 13 to 16, wherein the location information acquisition unit acquires the imaging location information based on input from the user using the location information generation support information generated by the location identification support unit.

18. The program according to any one of claims 13 to 16, wherein the measurement point information acquisition unit acquires the measurement point information based on a standard head X-ray photograph, which is an image obtained by imaging a head X-ray radiograph.

19. A measurement point information acquisition unit that acquires measurement point information indicating a measurement point corresponding to a part of the head based on an image obtained by imaging an X-ray of the target head, a magnetic resonance image of the target head, or an image obtained by computed tomography of the target head, A position information acquisition unit acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, based on the aforementioned measurement point information. A unit for acquiring planned position information that obtains planned position information indicating the position when the front teeth, molars, or jawbone are moved, The system includes a movement information generation unit that generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before movement, based on the measurement point information, the imaging position information, and the planned position information, The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The aforementioned movement information generation unit, The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (d) Information indicating the amount of tilt movement of the jawbone is generated as the amount of change in angle between the reference plane that serves as the reference for the tilt and a plane that is at least in contact with the jawbone. (e) Information indicating the amount of jawbone depression or extrusion is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and A dental treatment support system that performs at least one of the following: (f) generating information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane that serves as the reference for movement.

20. A computer-based information processing method, Based on images obtained from X-ray imaging of the target's head, magnetic resonance imaging of the target's head, or computed tomography of the target's head, measurement point information indicating measurement points corresponding to parts of the head is acquired. Based on the aforementioned measurement point information, imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging is acquired. Obtain planned position information that shows the position if the front teeth, molars, or jawbone were moved. Based on the measurement point information, the imaging position information, and the planned position information, the system generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before the movement, assuming that the front teeth, molars, or jawbone have been moved. The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (d) Information indicating the amount of tilt movement of the jawbone is generated as the amount of change in angle between the reference plane that serves as the reference for the tilt and a plane that is at least in contact with the jawbone. (e) Information indicating the amount of jawbone depression or extrusion is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and (f) The information processing method, which performs at least one of the following: generating information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane that serves as the reference for movement.

21. A computer, A measurement point information acquisition unit acquires measurement point information indicating measurement points corresponding to parts of the head based on images obtained from X-ray imaging of the target head, magnetic resonance imaging of the target head, or computed tomography of the target head. A position information acquisition unit acquires imaging position information indicating the position of the target anterior teeth, molars, or jawbone at the time of imaging, based on the aforementioned measurement point information. A unit for acquiring planned position information that obtains planned position information indicating the position when the front teeth, molars, or jawbone are moved, A program for functioning as a movement information generation unit that generates movement information indicating the amount of movement from the position of the front teeth, molars, or jawbone before movement, when the front teeth, molars, or jawbone are moved, based on the measurement point information, the imaging position information, and the planned position information, The aforementioned movement information includes at least one of the following: information indicating the amount of tilting movement of an incisor or molar; information indicating the amount of intrusion or extrusion of an incisor or molar; information indicating the amount of parallel movement of an incisor or molar; information indicating the amount of tilting movement of the jawbone; information indicating the amount of parallel movement of the jawbone; and information indicating the amount of intrusion or extrusion of the jawbone. The aforementioned movement information generation unit, The plane on which two or more measurement points indicated by the aforementioned measurement point information exist, or the plane on which a reference point derived from those two or more measurement points exists, is used as the reference plane. (d) Information indicating the amount of tilt movement of the jawbone is generated as the amount of change in angle between the reference plane that serves as the reference for the tilt and a plane that is at least in contact with the jawbone. (e) Information indicating the amount of jawbone depression or extrusion is generated as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction perpendicular to the reference plane that serves as the basis for movement, and The program performs at least one of the following: (f) generating information indicating the amount of parallel movement of the jawbone as the length between the position of the jawbone before movement and the position of the jawbone after movement, in a direction along the reference plane that serves as the reference for movement.

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