Orthodontic Device Manufacturing Method, Computing Device for Performing the Method and a Computer-readable Recording Medium therefor

Abstract

A method for manufacturing an orthodontic device and a computing device for performing said method are disclosed. The method for manufacturing an orthodontic device performed by the computing device may include: a step of identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan; a step of determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount; a step of visualizing the area of ​​occurrence of an orthodontic force provided to individual teeth of the first tooth model by said orthodontic device; and a step of determining the orthodontic possibility of said orthodontic device based on the area of ​​required orthodontic force for generating the second tooth model from the first tooth model and the visualized area of ​​occurrence of the orthodontic force.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing an orthodontic device, and more specifically, to a method and device for visualizing and displaying the force exerted by the orthodontic device on the teeth. Background Technology

[0002] Conventional removable orthodontic treatment relies on pushing forces applied to the teeth by covering appliances (e.g., removable appliances with a transparent shell structure). Therefore, there is a limitation in that planned tooth movement cannot be achieved if the direct pushing force of the appliance is insufficient.

[0003] Since dental orthodontic treatment using this removable method is characterized by planned tooth movement being performed by the orthodontic appliance, there was a problem in that it was difficult to verify in advance whether the planned tooth movement could be performed before the appliance was fabricated.

[0004] The information described above may be provided as related art for the purpose of aiding understanding of the present invention. No claim or determination is made as to whether any of the foregoing can be applied as prior art related to the present invention. Prior art document: Registered Patent Publication No. 10-2401982 (Published May 24, 2022) The problem to be solved

[0005] The present invention can provide a method and device for visualizing and displaying the force exerted by an orthodontic device on a tooth.

[0006] The present invention can provide a method and apparatus for determining whether an orthodontic force corresponding to a treatment plan is manifested by utilizing the force applied to the teeth of an orthodontic device that is visualized and displayed. means of solving the problem

[0007] A method for manufacturing an orthodontic device performed by a computing device according to an embodiment of the present invention may include: a step of identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan; a step of determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount; a step of visualizing the area of ​​occurrence of an orthodontic force provided to individual teeth of the first tooth model by the orthodontic device; and a step of determining the orthodontic possibility of the orthodontic device based on the area of ​​the required orthodontic force for generating the second tooth model from the first tooth model and the visualized area of ​​occurrence of the orthodontic force.

[0008] The step of determining the corrective possibility of the above orthodontic device may include: a step of visualizing the required area of ​​corrective force required to generate the second tooth model from the first tooth model; and a step of determining the corrective possibility of the above orthodontic device based on whether the visualized required area of ​​corrective force matches the area where the corrective force is generated.

[0009] The area requiring corrective force to generate the second tooth model in the first tooth model may include at least one grid area where a push force required to achieve the distance movement and rotational movement required for the individual tooth is applied, in a state where the tooth surface of the individual tooth by direction is areaed into a predetermined number of grid forms.

[0010] The tooth surface of the individual tooth according to direction may be characterized by being divided into an odd number of grid shapes.

[0011] The tooth surface of the individual tooth according to direction above is minimum It can be characterized by being region-ized in the above grid form.

[0012] The step of visualizing and displaying the area of ​​occurrence of the corrective force may display the intensity of the corrective force generated to the individual teeth of the first tooth model by the corrective device differently depending on the magnitude of the positional variation reflected in the corrective device.

[0013] The step of visualizing and displaying the region of occurrence of the correction force may display a table of positional variation corresponding to the intensity of occurrence of the correction force together with the region of occurrence of the correction force.

[0014] A computing device according to one embodiment of the present invention includes one or more processors; and a memory for storing instructions, wherein when the instructions are executed by the one or more processors, the device may perform the following operations: identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan; determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount; visualizing an area of ​​occurrence of an orthodontic force provided to individual teeth of the first tooth model by the orthodontic device; and determining the possibility of orthodontic treatment of the orthodontic device based on the area of ​​occurrence of the orthodontic force required to generate the second tooth model from the first tooth model and the visualized area of ​​occurrence of the orthodontic force. Effects of the invention

[0015] According to one embodiment of the present invention, visualizing the force exerted by the orthodontic device on the teeth can help to intuitively recognize the corrective force of the orthodontic device.

[0016] According to one embodiment of the present invention, by determining whether an orthodontic force corresponding to a treatment plan is manifested using the force applied to the teeth of a visualized orthodontic device, it is possible to confirm in advance whether tooth movement according to the treatment plan is possible. Brief explanation of the drawing

[0017] In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. FIG. 1 is a diagram showing the configuration of a computing device that performs a method for manufacturing a calibration device according to one embodiment of the present invention. FIGS. 2 to 4 are drawings showing individual tooth information for reflecting an orthodontic treatment plan according to one embodiment of the present invention. FIG. 5 is a drawing illustrating the corrective force applied to individual teeth according to one embodiment of the present invention. FIG. 6 is a drawing illustrating a method for regionalizing the tooth surface of an individual tooth according to one embodiment of the present invention. FIG. 7 is a diagram showing the required area of ​​a preset corrective force corresponding to the distance movement in the occlusal plane direction according to one embodiment of the present invention. FIG. 8 is a diagram showing the required area of ​​a preset corrective force corresponding to a distance movement in the gum direction according to one embodiment of the present invention. FIG. 9 is a diagram showing the required area of ​​a preset corrective force corresponding to the adjustment of the nerve direction angle according to one embodiment of the present invention. FIG. 10 is a diagram showing the required area of ​​a preset correction force corresponding to centrifugal angle adjustment according to one embodiment of the present invention. FIG. 11 is a diagram showing the required area of ​​a preset correction force corresponding to a buccal direction distance movement according to one embodiment of the present invention. FIG. 12 is a diagram showing the required area of ​​a preset corrective force corresponding to a lingual direction distance movement according to one embodiment of the present invention. FIG. 13 is a diagram showing the required area of ​​a preset correction force corresponding to the adjustment of the narrow side inclination according to one embodiment of the present invention. FIG. 14 is a drawing showing the required area of ​​a preset corrective force corresponding to the lingual inclination adjustment according to one embodiment of the present invention. FIG. 15 is a diagram showing the required area of ​​a preset corrective force corresponding to a distance movement in the medial direction according to one embodiment of the present invention. FIG. 16 is a diagram showing the required area of ​​a preset correction force corresponding to a centrifugal distance movement according to one embodiment of the present invention. FIG. 17 is a diagram showing the required area of ​​a preset corrective force corresponding to the spinal rotation adjustment according to one embodiment of the present invention. FIG. 18 is a diagram showing the required area of ​​a preset correction force corresponding to centrifugal rotation adjustment according to one embodiment of the present invention. FIGS. 19 to 25 illustrate an example of visualizing and displaying the correction force of a correction device according to one embodiment of the present invention. FIG. 26 is a flowchart illustrating a method for manufacturing a calibration device according to one embodiment of the present invention. Specific details for implementing the invention

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0019] FIG. 1 is a diagram showing the configuration of a computing device that performs a method for manufacturing a calibration device according to one embodiment of the present invention.

[0020] As illustrated in FIG. 1, the computing device (100) may include one or more processors (110) and a memory (120) that loads or stores a program (130) executed by the processors (110). The components included in the computing device (100) of FIG. 1 are merely examples, and a person skilled in the art to which the present invention pertains will know that other general-purpose components may be included in addition to the components shown in FIG. 1.

[0021] The computing device (100) is sufficient if it is a device capable of executing a program written to perform the present invention, and may be, for example, a server, a laptop computer, etc.

[0022] The processor (110) controls the overall operation of each component of the computing device (100). The processor (110) may be configured to include at least one of a CPU (Central Processing Unit), MPU (Micro Processor Unit), MCU (Micro Controller Unit), GPU (Graphic Processing Unit), NPU (Neural Processing Unit), DSP (Digital Signal Processor), or any other type of processor well known in the art of the present invention. Additionally, the processor (110) may perform operations for at least one application or program for executing a method / operation according to various embodiments of the present invention. The computing device (100) may have one or more processors.

[0023] Memory (120) stores one or more combinations of various data, instructions, and information used by a component (e.g., processor (110)) included in the computing device (100). Memory (120) may include volatile memory and / or non-volatile memory.

[0024] The program (130) may include one or more actions in which methods / actions according to various embodiments of the present invention are implemented, and may be stored in memory (120) in the form of software. Here, the action corresponds to instructions implemented in the program (130). For example, the program (130) may include instructions to perform actions such as identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan, determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount, visualizing the area of ​​occurrence of orthodontic force provided to individual teeth of the first tooth model by the orthodontic device, and determining the orthodontic possibility of the orthodontic device based on the required area of ​​orthodontic force required to create the second tooth model from the first tooth model and the visualized area of ​​occurrence of orthodontic force.

[0025] When the program (130) is loaded into memory (120), the processor (110) can perform methods / operations according to various embodiments of the present invention by executing a plurality of operations to implement the program (130).

[0026] The execution screen of the program (130) can be displayed through the display (140). In the case of FIG. 1, the display (140) is depicted as a separate device connected to the computing device (100), but in the case of a computing device (100) such as a terminal that a user can carry, such as a smartphone or tablet, the display (140) can be a component of the computing device (100). The screen displayed on the display (140) may be the result of the execution of the program or before information is input into the program.

[0028] FIGS. 2 to 4 are drawings showing individual tooth information for reflecting an orthodontic treatment plan according to one embodiment of the present invention.

[0029] In order to change the position of individual teeth included in a tooth model according to an orthodontic treatment plan, a processor (e.g., processor (110) of FIG. 1) of a computing device (e.g., computing device (100) of FIG. 1) can set identifiable orientation information for the individual teeth.

[0030] Referring to Fig. 2, the processor can distinguish six clinically significant directional information for individual teeth. At this time, the six directional information may consist of the mesial and distal directions corresponding to the horizontal direction, the occlusal and cervical directions corresponding to the vertical direction, and the buccal direction (or labial or facial direction) and lingual direction corresponding to the anterior-posterior direction.

[0031] Referring to FIG. 3, the processor can set a long axis that serves as a reference for position change for the individual tooth, in addition to the orientation information of the individual tooth. More specifically, the processor can separate the individual tooth into a crown region and a root region to set the long axis of the individual tooth. The processor can identify the center of mass (310) of the separated crown region and the center of mass (320) of the root region, and set a line connecting the two identified centers of mass (310, 320) as the long axis (330) of the individual tooth.

[0032] However, this method of setting the tooth axis can be applied when data regarding the root region of an individual tooth exists through CT (Computed Tomography), etc. If data regarding the root region of an individual tooth does not exist, the processor can identify the center of mass (310) of the crown region of the individual tooth and the center of mass (340) of the gum boundary region located in the gingival direction of the crown region, and set the line connecting the two identified centers of mass (310, 340) as the tooth axis (330) of the individual tooth.

[0033] Referring to FIG. 4, the processor can generate cross-sections of individual teeth according to directional information to visualize the orthodontic force provided to individual teeth by the orthodontic device. More specifically, the processor can set a tooth axis (410) for individual teeth, separate the individual teeth into two regions based on the set tooth axis, and then perform a vertical projection (420) on each region.

[0034] The processor can generate a reference line for cross-section generation (430) by deriving feature points existing in two regions through vertical projection of such individual teeth. More specifically, for individual teeth having tooth numbers #1 to #3, the processor can generate a reference line by connecting the deepest convex parts identified in each of the two regions through vertical projection.

[0035] In contrast, for individual teeth having tooth numbers #4 through #7, the processor can generate a baseline by connecting the deepest concave parts identified in each of the two regions through vertical projection.

[0036] Subsequently, the processor can generate a minimum rectangle (440) of the individual tooth that includes all points of the individual tooth projected onto a plane parallel to the generated baseline and perpendicular to the tooth axis, as the AA cross section of the individual tooth. Then, the processor can generate a minimum rectangle (450) of the individual tooth that includes all points of the individual tooth projected onto a plane perpendicular to the generated baseline and parallel to the tooth axis, as the MA cross section of the individual tooth. Additionally, the processor can generate a minimum rectangle (460) of the individual tooth that includes all points of the individual tooth projected onto a plane parallel to the tooth axis and perpendicular to the generated MA cross section, as the BA cross section.

[0037] The processor can form the crown bounding box (CBB, 470) of the individual tooth using the AA cross-section, MA cross-section and BA cross-section generated in this way.

[0039] FIG. 5 is a drawing illustrating the corrective force applied to individual teeth according to one embodiment of the present invention.

[0040] Orthodontic force can refer to the force required to change the current position of individual teeth, that is, the external force necessary for territorial or rotational movement of individual teeth. Such orthodontic force can have four characteristics: force distribution, force direction, force magnitude, and duration of action. First, the force distribution refers to the location where the point of force application occurs, which can be the area indicated by the arrow in the cross-section as shown in Fig. 5. Here, the point of force application refers to the surface area of ​​the individual tooth where territorial or rotational movement is induced by the force applied by the orthodontic device.

[0041] The direction of the force may refer to the direction of the arrow on the cross-section as shown in Fig. 5, which is the direction of the point of application of the force. Here, the direction of the force may be the same as the direction in which the orthodontic device pushes the surface area of ​​the individual tooth.

[0042] The magnitude of the force is the intensity of the point of application of the force and can be represented by the length of the arrow in the cross-section as shown in Fig. 5. Finally, the duration of action is the time during which the magnitude of the force is sustained at the point of application of the force and can be represented by the time the arrow is applied to the cross-section as shown in Fig. 5.

[0043] Orthodontic appliances can perform distance or rotational movement of individual teeth by generating a compressive force on individual teeth using the elasticity of the material forming the appliance. Therefore, the four characteristics of orthodontic force can correspond to orthodontic appliances as follows.

[0044] First, the processor (e.g., processor (110) of FIG. 1) of the computing device (e.g., computing device (100) of FIG. 1) can identify the tooth area where the orthodontic device is in close contact with and applies pressure to individual teeth, that is, the tooth area where a difference occurs between the tooth position in the next state and the tooth position in the current state in the orthodontic treatment plan. The processor can derive the tooth area thus identified as the area where a push force is generated by the orthodontic device and define this as the distribution of force.

[0045] The processor can define the direction of the force by examining the tooth region where the pushing force is generated by the orthodontic device, that is, the multiplicity of the tooth region related to the force distribution, and the relationship between the tooth region related to the force distribution and the central region of the tooth surface.

[0046] Since the intensity of the pushing force induced through the orthodontic device is proportional to the difference between the tooth position in the next state and the tooth position in the current state, this can be defined as the magnitude of the force.

[0047] The processor may define the period of intraoral wearing of the orthodontic appliance as the period of action, and in defining the period of action, may additionally consider the characteristic of maintenance or weakening depending on the elastic recovery force of the orthodontic appliance.

[0048] After identifying the corrective force of the orthodontic device to be applied to the patient in this manner, the processor can provide the identification result through a display (e.g., the display (140) of FIG. 1). More specifically, the processor can identify the amount of positional variation for individual teeth (e.g., data for the next state tooth model - data for the current state tooth model) using data for the current state tooth model and data for the next state tooth model in the orthodontic treatment plan.

[0049] The processor can produce an orthodontic device to be applied to the current state tooth model based on the positional displacement amount for correcting the teeth from the current state tooth model to the next state tooth model.

[0050] When the orthodontic device produced in this way is worn on the tooth model in its current state, the processor can visualize and display the area and intensity of the orthodontic force generated by the device on the tooth model in its current state.

[0051] Based on the area and intensity of the corrective force generated in this way, the processor can determine whether the tooth model in the current state can be changed to the tooth model in the next state.

[0052] In other words, the processor must determine whether the information on the positional displacement reflected during the fabrication of the orthodontic appliance can be effectively represented as a pushing force on individual teeth, and to this end, the relationship between the positional displacement of individual teeth and the orthodontic force of the appliance, i.e., the pushing force, can be defined. The relationship between the positional displacement of a total of 12 individual teeth and the pushing force reflected on individual teeth by the orthodontic appliance can be defined as follows.

[0053] 1) Occurrence of corrective force: Whether there is a positional variation between the tooth model in the current state and the tooth model in the next state.

[0054] 2) Location of orthodontic force generation: Division of tooth surface areas to distinguish the location of the application point of the force generated on the tooth surface.

[0055] 3) Direction of corrective force: The relationship between the location of the point of application of the force generated on the tooth surface and the central area of ​​the tooth surface.

[0056] 4) Intensity of corrective force generation: Magnitude of positional displacement between the tooth model in the current state and the tooth model in the next state.

[0057] 5) Duration of corrective force: The period during which the corrective device is worn and the period during which the elasticity of the clear aligner is maintained.

[0058] The processor can easily identify whether corrective force is generated and the intensity of the force through information regarding the positional displacement of individual teeth, and can also easily identify the duration of the corrective force through the wearing period of the corresponding orthodontic device.

[0059] However, in order to identify the location of occurrence of the corrective force and the direction of the corrective force corresponding to the amount of positional variation of individual teeth, the processor may divide the tooth surface into a central area and a peripheral area.

[0060] The most important criteria for distinguishing the point of application of force distributed on the tooth surface may be whether the point of application of force occurs in the central region of the tooth surface and whether the point of application of force has a symmetrical structure. Therefore, in order to distinguish whether the point of application of force occurs in the central region of the tooth surface, the processor may divide the tooth surface into at least three odd regions.

[0061] One of the key features of each region divided into odd-numbered areas through zoning is that, since each region is divided into equal sizes, it can provide a basis for determining whether the orthodontic device applies force to the central area of ​​individual teeth or applies force symmetrically or asymmetrically to the surrounding areas.

[0062] For example, if the tooth surface is divided into three regions, each region can be divided into areas of equal size relative to the entire area. If a pushing force is applied to the central region, the individual tooth may undergo a distance movement based on the applied pushing force. Additionally, if a pushing force is applied symmetrically from both sides simultaneously to the surrounding regions excluding the central region, the individual tooth may undergo a distance movement equal to the pushing force applied to the central region. Conversely, if an asymmetric force is applied to any one of the surrounding regions, the individual tooth may undergo rotational movement rather than distance movement.

[0063] Additionally, to distinguish whether the point of force application has a symmetrical structure, the processor can region the tooth surface into at least three odd regions in both the transverse and longitudinal directions. For example, the processor minimum the tooth surface Although the area can be defined in the grid form described above, such a method of defining the tooth surface is merely one example and is not limited to the above example.

[0064] The processor can identify distance movement or rotational movement of individual teeth based on the point of application of force on the regiond tooth surface. More specifically, through the regionization of the tooth surface, the processor can identify that distance movement is performed on an individual tooth when the point of application of force acts perpendicular to the corresponding tooth surface. In other cases, the processor can identify that differential distance complex movement, i.e., rotational movement of the individual tooth, is performed by moving by the magnitude of the force at each point of application acting on the tooth surface. In the case of such differential distance complex movement, the processor can identify directional information of the rotational movement of the corresponding individual tooth by considering the point of application of force identified on the tooth surface together with the point of application of force identified on a tooth surface in a different direction.

[0066] FIG. 6 is a drawing illustrating a method for regionalizing the tooth surface of an individual tooth according to one embodiment of the present invention.

[0067] The processor (e.g., processor (110) of FIG. 1) of the computing device (e.g., computing device (100) of FIG. 1) can zone the tooth surface for each of the six directions to identify the corrective force that the orthodontic device provides to individual teeth.

[0068] In the example of Fig. 6, to distinguish the central region and the peripheral region, the tooth surfaces in individual directions Although the area was zoned in the form of a grid, this method of zoning the tooth surface is merely one example and is not limited to the above example.

[0070] FIG. 7 is a diagram showing the required area of ​​a preset corrective force corresponding to the distance movement in the occlusal plane direction according to one embodiment of the present invention.

[0071] Occlusal translation refers to linear movement along the occlusal plane relative to the occlusio-cervical axis. The direction in which such vertical tooth movement is easily verified may be the buccal or labial direction. In this case, the orthodontic force required for the vertical movement of individual teeth must be applied as a pushing force to the central area of ​​the tooth surface in the cervical view (e.g., {5}).

[0072] However, through the present invention, it can be easily understood that in general cases, the tooth surface in the cervical view is covered by the gums, making it difficult for an orthodontic device without additional devices to provide the corrective force necessary for the vertical movement of individual teeth.

[0074] FIG. 8 is a diagram showing the required area of ​​a preset corrective force corresponding to a distance movement in the gum direction according to one embodiment of the present invention.

[0075] Cervical translation refers to linear movement in the direction of the gums relative to the occlusio-cervical axis. The direction in which such vertical tooth movement is easily verified may be the buccal or labial direction. In this case, the orthodontic force required for the vertical movement of individual teeth may be generated by a pushing force in the central region of the tooth surface area in the occlusal view (e.g., Case 1-{e}). Additionally, the orthodontic force required for the vertical movement of individual teeth may also be generated by a pushing force in the symmetrical region of the tooth surface area in the occlusal view (e.g., Case 2-{b, h}, Case 3-{d, f}, Case 4-{a, c, g, i}).

[0076] However, the corrective force required for the distance movement in the direction of the gums provided in Fig. 8 is merely one example and may vary depending on the shape of the individual tooth (e.g., incisors, molars) for each tooth number.

[0078] FIG. 9 is a diagram showing the required area of ​​a preset corrective force corresponding to the adjustment of the nerve direction angle according to one embodiment of the present invention.

[0079] Mesial angulation refers to rotational movement in the mesial direction relative to the bucco-lingual axis. The direction in which such horizontal rotation of the tooth is easily verified may be the buccal or labial direction.

[0080] In this case, the orthodontic force required for the mesial rotational movement of individual teeth must be generated simultaneously from the lower region of the tooth surface area in the distal view (e.g., {8}) and the upper region of the tooth surface area in the mesial view (e.g., {b}).

[0081] Referring to Fig. 9, for the individual tooth corresponding to tooth number #16, the {8} region of the tooth surface area in the distal view may be difficult to generate a pushing force due to the absence of the tooth surface, and the {b} region of the tooth surface area in the mesial view may be difficult due to the covering of the gum.

[0082] However, additionally, the corrective force required for the mesial rotational movement of individual teeth may be generated by a pushing force in the lower symmetrical area of ​​the tooth surface region in the distal view (e.g., Case 1-{7, 9}).

[0083] In general, since adjacent teeth exist in the mesial and distal directions of individual teeth and the upper surface area of ​​the tooth in each corresponding direction is covered by gums, this method makes it easy to identify that orthodontic appliances without additional devices have difficulty providing the corrective force required for mesial rotational movement.

[0084] However, the corrective force required for rotational movement in the mesial direction provided in Fig. 9 is merely one example and may vary depending on the shape of individual teeth (e.g., incisors, molars) for each tooth number.

[0086] FIG. 10 is a diagram showing the required area of ​​a preset correction force corresponding to centrifugal angle adjustment according to one embodiment of the present invention.

[0087] Distal angulation refers to rotational movement in the distal direction relative to the bucco-lingual axis. The direction in which such horizontal rotation of the tooth is easily verified may be the buccal or labial direction.

[0088] At this time, the corrective force required for the distal rotational movement of individual teeth must be generated as a pushing force simultaneously in the upper region of the tooth surface area in the distal view (e.g., {2}) and the lower region of the tooth surface area in the mesial view (e.g., {h}).

[0089] Referring to Fig. 10, for the individual tooth corresponding to tooth number #16, the {2} region of the tooth surface area in the distal view may be difficult to generate a pushing force due to the problem of being covered by gums, and the {h} region of the tooth surface area in the mesial view may be difficult due to the problem of the absence of a tooth surface.

[0090] However, additionally, the corrective force required for the distal rotational movement of individual teeth may be generated by a pushing force in the lower symmetrical region of the tooth surface area in the mesial view (e.g., Case 1-{g, i}).

[0091] In general, since adjacent teeth exist in the mesial and distal directions of individual teeth and the upper surface area of ​​the tooth in each corresponding direction is covered by gums, this method makes it easy to identify that orthodontic appliances without additional devices have difficulty providing the corrective force required for distal rotational movement.

[0092] However, the corrective force required for centrifugal rotational movement provided in Fig. 10 is merely one example and may vary depending on the shape of individual teeth (e.g., incisors, molars) according to tooth number.

[0094] FIG. 11 is a diagram showing the required area of ​​a preset correction force corresponding to a buccal direction distance movement according to one embodiment of the present invention.

[0095] Buccal translation may refer to linear movement in the buccal direction relative to the bucco-lingual axis. This may be in the distal direction, where it is easy to verify such anterior-posterior tooth movement. In this case, the orthodontic force required for the anterior-posterior movement of individual teeth must be applied as a pushing force to the central region of the tooth surface area in the lingual view (e.g., Case 1-{5}).

[0096] Additionally, the orthodontic force required for the anterior-posterior movement of individual teeth may be generated by a pushing force in the symmetrical area of ​​the tooth surface in the lingual view (e.g., Case 2-{2, 8}, Case 3-{4, 6}, Case 4-{1, 3, 7, 9}).

[0097] However, the corrective force required for the buccal distance movement provided in Fig. 11 is merely one example and may vary depending on the shape of the individual tooth (e.g., incisors, molars) for each tooth number.

[0099] FIG. 12 is a diagram showing the required area of ​​a preset corrective force corresponding to a lingual direction distance movement according to one embodiment of the present invention.

[0100] Lingual translation refers to linear movement in the lingual direction relative to the bucco-lingual axis. The distal direction may be the easiest direction to verify such anterior-posterior tooth movement. In this case, the orthodontic force required for the anterior-posterior movement of individual teeth must be applied as a pushing force to the central region of the tooth surface area in the buccal view (e.g., Case 1-{e}).

[0101] Additionally, the orthodontic force required for the anterior-posterior movement of individual teeth may be generated by a pushing force in the symmetrical region of the tooth surface area in the buccal view (e.g., Case 2-{b, h}, Case 3-{d, f}, Case 4-{a, c, g, i}).

[0102] However, the corrective force required for the lingual distance movement provided in Fig. 12 is merely one example and may vary depending on the shape of the individual tooth (e.g., incisors, molars) for each tooth number.

[0104] FIG. 13 is a diagram showing the required area of ​​a preset correction force corresponding to the adjustment of the narrow side inclination according to one embodiment of the present invention.

[0105] Buccal inclination refers to rotational movement in the buccal direction relative to the mesiodistal axis. The direction in which such anterior-posterior rotation of the tooth is easily verified may be the distal direction. In this case, the orthodontic force required for the anterior-posterior rotation of individual teeth must be applied as a pushing force to the lower area of ​​the tooth surface in the lingual view (e.g., Case 1-{8}) and the upper area of ​​the tooth surface in the buccal view (e.g., Case 1-{b}).

[0106] Additionally, the corrective force required for anterior-posterior rotation of individual teeth may be generated by pushing forces in the lower symmetrical region of the tooth surface area in the lingual view (e.g., Case 2-{7, 9}) and the upper region of the tooth surface area in the buccal view (e.g., Case 2-{b}).

[0107] In addition, the corrective force required for anterior-posterior rotation of individual teeth may also be generated by pushing forces in the lower region of the tooth surface area in the lingual view (e.g., Case 3-{8}) and the upper symmetrical region of the tooth surface area in the buccal view (e.g., Case 3-{a, c}).

[0108] In addition, the corrective force required for anterior-posterior rotation of individual teeth may also be generated by pushing forces in the lower symmetrical region of the tooth surface area in the lingual view (e.g., Case 4-{7, 9}) and the upper symmetrical region of the tooth surface area in the buccal view (e.g., Case 4-{a, c}).

[0109] However, the corrective force required for adjusting the buccal inclination provided in Fig. 13 is merely one example and may vary depending on the shape of the individual tooth (e.g., incisors, molars) for each tooth number.

[0111] FIG. 14 is a drawing showing the required area of ​​a preset corrective force corresponding to the lingual inclination adjustment according to one embodiment of the present invention.

[0112] Lingual inclination refers to rotational movement in the lingual direction relative to the mesiodistal axis. The direction in which such anterior-posterior rotation of the tooth is easily verified may be the distal direction. In this case, the orthodontic force required for the anterior-posterior rotation of individual teeth must be applied as a pushing force to the upper area of ​​the tooth surface in the lingual view (e.g., Case 1-{2}) and the lower area of ​​the tooth surface in the buccal view (e.g., Case 1-{h}).

[0113] Additionally, the corrective force required for anterior-posterior rotation of individual teeth may be generated by pushing forces in the upper symmetrical region of the tooth surface area in the lingual view (e.g., Case 2-{1, 3}) and the lower region of the tooth surface area in the buccal view (e.g., Case 2-{h}).

[0114] In addition, the corrective force required for anterior-posterior rotation of individual teeth may also be generated by pushing forces in the upper area of ​​the tooth surface region in the lingual view (e.g., Case 3-{2}) and the lower symmetrical area of ​​the tooth surface region in the buccal view (e.g., Case 3-{g, i}).

[0115] In addition, the corrective force required for anterior-posterior rotation of individual teeth may also be generated by pushing forces in the upper symmetrical region of the tooth surface area in the lingual view (e.g., Case 4-{1, 3}) and the upper symmetrical region of the tooth surface area in the buccal view (e.g., Case 4-{g, i}).

[0116] However, the corrective force required for lingual inclination adjustment as shown in Fig. 13 is merely one example and may vary depending on the shape of individual teeth (e.g., incisors, molars) for each tooth number.

[0118] FIG. 15 is a diagram showing the required area of ​​a preset corrective force corresponding to a distance movement in the medial direction according to one embodiment of the present invention.

[0119] Mesial translation refers to linear movement in the mesial direction relative to the MesioDistal axis. The direction in which such horizontal tooth movement is easily verified may be the occlusal direction. In this case, the orthodontic force required for the horizontal movement of individual teeth must be applied as a pushing force to the central region of the tooth surface area in the distal view (e.g., {5}).

[0120] However, in general cases, adjacent teeth exist in the mesial and distal directions of individual teeth, and the central area of ​​the tooth surface in each corresponding direction is in contact with the adjacent teeth; therefore, this method makes it easy to identify that an orthodontic appliance without additional devices has difficulty providing the corrective force required for mesial movement.

[0121] However, additional corrective force required for the mesial distance movement of individual teeth may also be generated by a pushing force in the symmetrical area of ​​the tooth surface in the distal view (e.g., Case 1-{4, 6}).

[0122] However, the corrective force required for the mesial distance movement provided in Fig. 15 is merely one example and may vary depending on the shape of the individual tooth (e.g., anterior, posterior) for each tooth number.

[0124] FIG. 16 is a diagram showing the required area of ​​a preset correction force corresponding to a centrifugal distance movement according to one embodiment of the present invention.

[0125] Distal translation refers to linear movement in the distal direction relative to the MesioDistal axis. The direction in which such horizontal tooth movement is easily verified may be the occlusal direction. In this case, the orthodontic force required for the horizontal movement of individual teeth must be applied as a pushing force to the central region (e.g., {e}) of the tooth surface area in the Mesial view.

[0126] However, in general cases, adjacent teeth exist in the mesial and distal directions of individual teeth, and the central area of ​​the tooth surface in each corresponding direction is in contact with the adjacent teeth; therefore, it can be easily identified through this method that an orthodontic appliance without additional devices has difficulty providing the corrective force required for distal movement.

[0127] However, additionally, the corrective force required for distal movement of individual teeth may be generated by a pushing force in the symmetrical region of the tooth surface area in the mesial view (e.g., Case 1-{d, f}).

[0128] However, the corrective force required for centrifugal distance movement provided in Fig. 16 is merely one example and may vary depending on the shape of individual teeth (e.g., incisors, molars) for each tooth number.

[0130] FIG. 17 is a diagram showing the required area of ​​a preset corrective force corresponding to the spinal rotation adjustment according to one embodiment of the present invention.

[0131] Mesial rotation adjustment refers to rotational movement in the mesial direction relative to the occlusiocervical axis. The direction in which such mesial-distal rotation of the tooth is easily verified may be the occlusal direction. In this case, the orthodontic force required for the mesial-distal rotation of individual teeth must be applied as a pushing force to the middle right area of ​​the tooth surface in the lingual view (e.g., Case 1-{f}) and the middle right area of ​​the tooth surface in the buccal view (e.g., Case 1-{6}).

[0132] Additionally, the corrective force required for mesiodistal rotation of individual teeth may be generated by pushing forces in the middle right area of ​​the tooth surface region in the lingual view (e.g., Case 2-{f}) and the right symmetric area of ​​the tooth surface region in the buccal view (e.g., Case 2-{3, 9}).

[0133] In addition, the corrective force required for mesiodistal rotation of individual teeth may also be generated by pushing forces in the right symmetrical area of ​​the tooth surface region in the lingual view (e.g., Case 3-{c, i}) and the middle right area of ​​the tooth surface region in the buccal view (e.g., Case 3-{6}).

[0134] In addition, the corrective force required for mesiodistal rotation of individual teeth may also be generated by pushing forces in the right symmetrical area of ​​the tooth surface region in the lingual view (e.g., Case 4-{c, i}) and the right symmetrical area of ​​the tooth surface region in the buccal view (e.g., Case 4-{3, 9}).

[0135] However, the corrective force required for the mesial rotation adjustment provided in Fig. 17 is merely one example and may vary depending on the shape of the individual tooth (e.g., anterior, posterior) for each tooth number.

[0137] FIG. 18 is a diagram showing the required area of ​​a preset correction force corresponding to centrifugal rotation adjustment according to one embodiment of the present invention.

[0138] Distal rotation adjustment refers to rotational movement in the distal direction relative to the occlusiocervical axis. The direction in which such mesiodistal rotation of the tooth is easily verified may be the occlusal direction. In this case, the orthodontic force required for the mesiodistal rotation of individual teeth must be applied as a pushing force to the middle left area of ​​the tooth surface in the lingual view (e.g., Case 1-{d}) and the middle left area of ​​the tooth surface in the buccal view (e.g., Case 1-{4}).

[0139] Additionally, the corrective force required for mesiodistal rotation of individual teeth may be generated by pushing forces in the middle left region of the tooth surface area in the lingual view (e.g., Case 2-{d}) and the left symmetric region of the tooth surface area in the buccal view (e.g., Case 2-{1, 7}).

[0140] In addition, the corrective force required for mesiodistal rotation of individual teeth may also be generated by pushing forces in the left symmetrical area of ​​the tooth surface region in the lingual view (e.g., Case 3-{a, g}) and the middle left area of ​​the tooth surface region in the buccal view (e.g., Case 3-{4}).

[0141] In addition, the corrective force required for mesiodistal rotation of individual teeth may also be generated by pushing forces in the left symmetrical area of ​​the tooth surface region in the lingual view (e.g., Case 4-{a, g}) and the left symmetrical area of ​​the tooth surface region in the buccal view (e.g., Case 4-{1, 7}).

[0142] However, the corrective force required for centrifugal rotation adjustment provided in Fig. 18 is merely one example and may vary depending on the shape of individual teeth (e.g., incisors, molars) for each tooth number.

[0144] FIGS. 19 to 25 illustrate an example of visualizing and displaying the correction force of a correction device according to one embodiment of the present invention.

[0145] Referring to FIG. 19, the processor (e.g., processor (110) of FIG. 1) of a computing device (e.g., computing device (100) of FIG. 1) can visualize and display the area and intensity of the orthodontic force generated by the orthodontic device when the orthodontic device is worn on the tooth model in its current state.

[0146] At this time, the processor can display the total movement results in three directions, along with a table of positional displacement, which allows for the simultaneous identification of 12 applicable positional displacement items for individual teeth included in the current tooth model. The three directions displayed may be buccal, distal, and occlusal, but the type of direction may vary depending on the type of distance or rotational movement required for the individual tooth.

[0147] Referring to FIG. 20, when a user interface such as a mouse cursor identifies an overlapping variation item in a variation table containing multiple variation items, the processor can display a preset required corrective force corresponding to the identified variation item with an arrow. For example, as shown in FIG. 20, when a mouse cursor is overlaid on a variation item corresponding to mesial angulation among the variation items included in the variation table, the processor can display with an arrow the corrective force required for mesial rotational movement, that is, the force pushing simultaneously in the lower area of ​​the tooth surface region in the distal view and the upper area of ​​the tooth surface region in the mesial view.

[0148] If any of the variation items included in the variation table are selected through the user interface, the processor can display detailed movement results consisting of directions optimized for the selected variation item, along with the position variation table. For example, as shown in FIG. 21, if a variation item corresponding to the mesial angle adjustment among the variation items included in the variation table is selected, the processor can visualize and display the required area of ​​the pre-set corrective force related to the mesial angle adjustment.

[0149] In FIG. 21, since the area requiring a pre-set corrective force in relation to the adjustment of the mesial direction angle and the area generating the corrective force provided to individual teeth included in the current state tooth model by the corrective device coincide, the processor can determine the possibility of correction by giving a high weight to the corrective device.

[0150] Referring to Fig. 22, when the mouse cursor is superimposed on a translation item corresponding to buccal translation among the translation items included in the translation table, the processor can indicate the corrective force required for buccal translation, that is, the pushing force in the central area of ​​the tooth surface area of ​​the lingual view, with an arrow.

[0151] Referring to FIG. 23, when a variation item corresponding to a buccal direction distance movement is selected among the variation items included in the variation table, the processor can visualize and display the required area of ​​a pre-set correction force in relation to the buccal direction distance movement.

[0152] In FIG. 23, since the area requiring a pre-set corrective force in relation to the buccal direction distance movement and the area generating the corrective force provided to individual teeth included in the current state tooth model by the corrective device coincide, the processor can determine the possibility of correction by assigning a high weight to the corrective device.

[0153] Referring to Fig. 24, when the mouse cursor is superimposed on a variation item corresponding to mesial rotation among the variation items included in the variation table, the processor can indicate with an arrow the corrective force required for mesial rotation, that is, the pushing force in the middle right area of ​​the tooth surface region of the lingual view and the middle right area of ​​the tooth surface region of the buccal view.

[0154] Referring to FIG. 25, when a variation item corresponding to the mesial rotation adjustment is selected among the variation items included in the variation table, the processor can visualize and display the required area of ​​the pre-set correction force in relation to the mesial rotation adjustment.

[0155] In FIG. 25, since the area requiring a pre-set corrective force in relation to the mesial rotation adjustment and the area generating the corrective force provided to individual teeth included in the current state tooth model by the corrective device coincide, the processor can determine the possibility of correction by giving a high weight to the corrective device.

[0157] FIG. 26 is a flowchart illustrating a method for manufacturing a calibration device according to an embodiment of the present invention. In one embodiment, at least one of the operations of FIG. 26 may be performed simultaneously or in parallel with other operations, and the order of the operations may be changed. Additionally, at least one of the operations may be omitted, and other operations may be performed additionally. The operations illustrated in FIG. 26 may be performed by a processor (processor (110) of FIG. 1) of a computing device (e.g., computing device (100) of FIG. 1).

[0158] In operation (2610), the processor can identify the amount of positional variation between the tooth model in the current state and the tooth model in the next state on the orthodontic treatment plan.

[0159] In operation (2620), the processor can determine the orthodontic device to be applied to the current state tooth model based on the identified positional variation amount.

[0160] In operation (2630), the processor can visualize the area of ​​occurrence of the corrective force provided to individual teeth included in the current state tooth model by the corrective device. At this time, the processor can display the intensity of the occurrence of the corrective force provided to individual teeth included in the current state tooth model by the corrective device differently depending on the magnitude of the positional variation amount reflected in the corrective device.

[0161] In addition, the processor can identify the intensity of the orthodontic force generated on individual teeth included in the current state tooth model by the fabricated orthodontic device, and display a table of positional variation corresponding to the identified intensity of the orthodontic force along with the area of ​​generation of the corresponding orthodontic force.

[0162] In operation (2640), the processor can determine the correctability of the orthodontic device based on the area of ​​the required corrective force and the area of ​​the visualized corrective force generation required to generate the next state tooth model from the current state tooth model.

[0163] More specifically, the processor can visualize and display the required area of ​​orthodontic force needed to generate the next state tooth model from the current state tooth model, and compare whether the visualized required area of ​​orthodontic force matches the area where the orthodontic force occurs. If the comparison result shows that the required area of ​​orthodontic force matches the area where it occurs, the processor can determine the possibility of orthodontic treatment by assigning a high weight to the corresponding orthodontic device.

[0164] If the area requiring orthodontic force and the area where it occurs do not coincide, the processor may notify the user that tooth movement is involved that is difficult to expect with the orthodontic device. In other words, by visualizing and comparing the area requiring force and the area where it occurs, the processor may provide grounds for reviewing whether to use additional auxiliary devices for the orthodontic device or grounds for modifying the tooth movement included in the orthodontic treatment plan.

[0166] The technical concept of the present invention may be implemented as computer-readable code on a computer-readable medium. The computer-readable recording medium may be, for example, a removable recording medium (CD, DVD, Blu-ray disc, USB storage device, removable hard disk), or a fixed recording medium (ROM, RAM), a hard disk drive (HDD), or a solid-state disk (SSD). The program recorded on the computer-readable recording medium may be transmitted to another computing device via a network such as the Internet and installed on the other computing device, thereby allowing it to be used on the other computing device.

[0167] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without altering the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within the equivalent scope shall be interpreted as being included within the scope of rights of the technical concept defined by the present invention. Explanation of the symbols

[0169] 100: Computing device 110 : Processor 120 : Memory 130 : Program 140 : Display

Claims

Claim 1 A method for manufacturing an orthodontic device performed by a computing device comprises: identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan; determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount; and visualizing the area of ​​occurrence of an orthodontic force provided to individual teeth of the first tooth model by the orthodontic device. A method for manufacturing an orthodontic device, comprising the step of determining the orthodontic possibility of the orthodontic device based on the area requiring the orthodontic force required to generate the second tooth model from the first tooth model and the area where the visualized orthodontic force is generated; wherein the area requiring the orthodontic force required to generate the second tooth model from the first tooth model includes at least one grid area where a push force required to achieve distance movement and rotational movement required for the individual tooth is applied, while the tooth surface of the individual tooth by direction is areaed into a predetermined number of grid forms, and the tooth surface of the individual tooth by direction is areaed into an odd number of grid forms in which each grid area is divided into equal sizes, and the individual tooth performs distance movement or rotational movement according to the position and symmetry of the force acting on the central area or peripheral area identified through the areaing. Claim 2 A method for manufacturing an orthodontic device according to claim 1, wherein the step of determining the correctability of the orthodontic device comprises: a step of visualizing the area requiring corrective force required to generate the second tooth model from the first tooth model; and a step of determining the correctability of the orthodontic device based on whether the visualized area requiring corrective force matches the area where the corrective force is generated. Claim 3 delete Claim 4 A method for manufacturing an orthodontic device according to claim 1, wherein the individual teeth are moved a distance by a force acting on a central area identified through the terminating. Claim 5 A method for manufacturing an orthodontic device, wherein, in paragraph 4, the individual tooth is moved the distance in the same manner as the force acting on the central area by a force acting symmetrically in the surrounding area identified through the termination. Claim 6 A method for manufacturing an orthodontic device according to claim 4, wherein the individual tooth is subjected to rotational movement by a force acting asymmetrically in a surrounding area identified through the terminating. Claim 7 In claim 1, the step of visualizing the area of ​​generation of the corrective force is a method for manufacturing an orthodontic device that displays the generation intensity of the corrective force provided to individual teeth of the first tooth model by the orthodontic device differently according to the magnitude of the positional variation amount reflected in the orthodontic device. Claim 8 In claim 7, the step of visualizing the region of generation of the correction force is a method for manufacturing a correction device that displays a table of positional deviations corresponding to the intensity of generation of the correction force together with the region of generation of the correction force. Claim 9 A non-transient computer-readable recording medium, wherein the computer-readable recording medium stores instructions, and the instructions, when executed by one or more processors, perform the method of any one of claims 1, 2 and 4 through 8. Claim 10 In a computing device, one or more processors; The device includes a memory for storing instructions, wherein when the instructions are executed by the one or more processors, the device performs the following operations: identifying a positional variation amount between a first tooth model in a current state and a second tooth model in a next state in an orthodontic treatment plan; determining an orthodontic device to be applied to the first tooth model based on the identified positional variation amount; visualizing an area of ​​occurrence of an orthodontic force provided to an individual tooth of the first tooth model by the orthodontic device; and determining the orthodontic feasibility of the orthodontic device based on the area of ​​occurrence of the orthodontic force required to generate the second tooth model from the first tooth model and the visualized area of ​​occurrence of the orthodontic force. The area of ​​occurrence of the orthodontic force required to generate the second tooth model from the first tooth model includes at least one grid area where a push force required to achieve distance movement and rotational movement required for the individual tooth is applied, wherein the tooth surface of the individual tooth in a specific direction is areaed into a predetermined number of grid forms, and the tooth surface of the individual tooth in a specific direction is areaed into an odd number of grid forms in which each grid area is divided into equal sizes, and the individual A computing device characterized in that the tooth performs distance movement or rotational movement according to the position and symmetry of the force acting on the central region or peripheral region identified through the above-mentioned region.

Images