Data processing method, device, and recording medium

Abstract

A method performed by an electronic device according to one embodiment of the present disclosure may comprise the steps of: generating first data for the inner surface of an intraoral appliance on the basis of three-dimensional scan data for the surface of a subject; generating second data for the outer surface of the intraoral appliance on the basis of the first data; and generating third data for the intermediate surface of the intraoral appliance located between the inner surface and the outer surface, on the basis of the first data and the second data.

Description

Data processing method, device and recording medium

[0001] The present disclosure relates to a technology for processing data. More specifically, the present disclosure relates to a technology for generating data for an intraoral appliance based on 3D scan data obtained by scanning a patient's intraoral structure using a 3D scanner.

[0002] By inserting a 3D scanner into a patient's oral cavity and scanning the oral cavity with the 3D scanner, the patient's oral structure can be identified based on the acquired images. For example, by inserting a 3D scanner into a patient's oral cavity and scanning the teeth, gingiva, and soft tissue areas, 2D scan data of the patient's oral structure can be acquired. By applying 3D modeling technology to the acquired 2D scan data, 3D scan data of the patient's oral structure can be generated.

[0003] Meanwhile, a wearable appliance can be designed to alleviate or prevent disorders caused by a patient's oral structure or oral habits. For example, patients with an improperly aligned oral structure may easily experience temporomandibular joint (TMJ) fatigue and even temporomandibular joint (TMJ) disorders. Furthermore, an oral structure with uneven teeth or protruding gums can cause bimaxillary prognathism. Thus, an appliance can be designed to fix a patient's teeth in a specific shape in the short term to prevent the patient from experiencing discomfort caused by their oral structure. Alternatively, an appliance can be designed to correct a patient's teeth to a specific shape in the long term. Another example is patients with oral habits such as bruxism, which can lead to tooth damage. Thus, an appliance can be designed to protect the teeth of such patients, preventing the patient from experiencing discomfort or disorders caused by their oral habits. In this way, an intraoral appliance that can be placed inside a patient's mouth for various purposes, such as tooth fixation, orthodontic treatment, and tooth protection, may include a splint. Alternatively, the intraoral appliance may include one or more components that can be assembled to form a single splint.

[0004] Typically, oral appliances are manufactured using a single material, which can make them difficult for some patients to insert and remove. For example, if the surface of the oral appliance is not smooth or made of inflexible material, patients with sensitive gums may not only have difficulty inserting and removing the appliance, but may also experience persistent discomfort while wearing it.

[0005] Therefore, the need to create an intraoral appliance by applying two or more materials has arisen to further improve the wearing comfort of the intraoral appliance.

[0006] The present disclosure aims to provide a technology for generating data for an intraoral attachment to which two or more materials can be applied based on scan data for an intraoral structure acquired using a three-dimensional scanner.

[0007] In addition, the present disclosure aims to provide a technology for generating a middle surface between an inner surface and an outer surface of an intraoral appliance, and generating data for an intraoral appliance to which two or more materials can be applied based on the middle surface.

[0008] In addition, the present disclosure aims to provide a technology for generating data on portions to which different materials are applied in an intraoral implant based on an intermediate surface located between the inner and outer surfaces of the intraoral implant.

[0009] Additionally, the present disclosure aims to provide a technology for providing data for an intraoral appliance to which two or more materials can be applied to a printing device capable of producing an intraoral appliance.

[0010] A method performed by an electronic device according to one embodiment of the present disclosure may include: generating first data for an inner surface of an intraoral fixture based on three-dimensional scan data for a surface of an object; generating second data for an outer surface of the intraoral fixture based on the first data; and generating third data for an intermediate surface of the intraoral fixture located between the inner surface and the outer surface based on the first data and the second data.

[0011] In one embodiment, the method performed by the electronic device may further include the steps of identifying a first material as a material of a first portion between the inner surface and the intermediate surface of the intraoral fixture; and identifying a second material as a material of a second portion between the intermediate surface and the outer surface of the intraoral fixture.

[0012] In one embodiment, the first portion of the intraoral fixture receives one or more teeth within the oral cavity, the second portion of the intraoral fixture defines a contour of the intraoral fixture, and at least one of the first portion or the second portion of the intraoral fixture may have a thickness that decreases as it approaches a gingival region within the oral cavity.

[0013] In one embodiment, the third data may further include data regarding locking of the first part and the second part.

[0014] In one embodiment, the first material may be more flexible than the second material.

[0015] In one embodiment, the step of generating the third data for the intermediate surface may include: identifying a first point on the inner surface and a normal vector to the inner surface at the first point; identifying a first offset point spaced apart from the first point by a first offset value in the direction of the normal vector; and identifying a second point on the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and a minimum distance between the first offset point and one or more points on the outer surface is greater than a predetermined value.

[0016] In one embodiment, the step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value may further include the step of identifying the second point as being identical to the first offset point in response to the first offset point being located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface being greater than the predetermined value.

[0017] In one embodiment, the step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value may include: in response to the first offset point being located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface being less than or equal to the predetermined value, identifying a second offset point spaced apart from the first offset point by a second offset value in a direction opposite to the normal vector; and in response to the second offset point being located between the inner surface and the outer surface and the minimum distance between the second offset point and the one or more points of the outer surface is greater than the predetermined value, identifying a second point of the intermediate surface corresponding to the first point.

[0018] In one embodiment, the step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value may include: in response to the first offset point not being located between the inner surface and the outer surface, identifying a third offset point spaced apart from the first offset point by a third offset value in a direction opposite to the normal vector; and, based on whether the third offset point is located between the inner surface and the outer surface and the minimum distance between the third offset point and the one or more points of the outer surface is greater than the predetermined value, identifying a second point of the intermediate surface corresponding to the first point.

[0019] In one embodiment, a method performed by an electronic device may further include: identifying a plurality of point pairs, each point pair comprising one point on the inner surface and one point on the outer surface; identifying a point pair among the plurality of point pairs having a closest distance between points; and determining the first offset value based on the identified point pair.

[0020] In one embodiment, the method performed by the electronic device may further include the step of receiving a user input for the first offset value.

[0021] In one embodiment, the step of generating the third data for the intermediate surface may include the steps of: identifying a plurality of point pairs, each point pair being comprised of one point on the inner surface and one point on the outer surface; identifying a plurality of intermediate points based on the plurality of point pairs, each intermediate point being located between one point on the inner surface and one point on the outer surface constituting each point pair; and generating the third data such that the intermediate surface includes the plurality of intermediate points.

[0022] In one embodiment, a method performed by an electronic device may include: identifying, among one or more points constituting the periphery of the inner surface, a specific point having the shortest distance from a specific point of the periphery of the intermediate surface; identifying, among one or more points constituting the periphery of the outer surface, a specific point having the shortest distance from a specific point of the periphery of the intermediate surface; and modifying the third data so that the intermediate surface includes a specific point on a straight line connecting the specific point of the periphery of the inner surface and the specific point of the periphery of the outer surface.

[0023] In one embodiment, the step of modifying the third data may include the step of identifying a point located on a straight line connecting a specific point of the inner periphery and a specific point of the outer surface, and spaced apart from the specific point of the inner periphery by a third offset value; and the step of modifying the third data so that the intermediate surface includes the identified point.

[0024] In one embodiment, a method performed by an electronic device may further include: receiving a user input for moving a specific point of the intermediate surface; identifying, based on the user input, a point located on a straight line connecting a specific point of the inner peripheral surface and a specific point of the outer peripheral surface and spaced apart from the specific point of the inner peripheral surface; and modifying the third data such that the intermediate surface includes the identified point.

[0025] An electronic device according to the present disclosure includes one or more processors, one or more memories storing instructions executed by the one or more processors, and when the instructions are executed by the one or more processors, the one or more processors can be configured to execute a method according to the present disclosure.

[0026] A non-transitory computer-readable recording medium according to the present disclosure records instructions that, when executed by one or more processors, cause the one or more processors to perform operations, and the instructions can be configured to cause the one or more processors to perform a method according to the present disclosure.

[0027] According to the present disclosure, data for an intraoral attachment to which two or more materials can be applied can be generated based on scan data for an intraoral structure acquired using a three-dimensional scanner.

[0028] Additionally, according to the present disclosure, it is possible to create an intermediate surface between the inner and outer surfaces of an intraoral implant, and to create data for an intraoral implant to which two or more materials can be applied based on the intermediate surface.

[0029] Additionally, the present disclosure can generate data on the portion of the intraoral implant to which different materials are applied based on the intermediate surface located between the inner and outer surfaces of the intraoral implant.

[0030] Additionally, the present disclosure can provide data for an intraoral appliance to which two or more materials can be applied to a printing device capable of generating the intraoral appliance.

[0031] FIG. 1 is a drawing for explaining a system for acquiring scan data using a 3D scanner according to one embodiment of the present disclosure.

[0032] FIG. 2A is a block diagram of an electronic device and a 3D scanner according to one embodiment of the present disclosure.

[0033] FIG. 2b is a perspective view of a 3D scanner according to one embodiment of the present disclosure.

[0034] FIG. 3A is a drawing for explaining maxillary scan data and mandibular scan data of an oral cavity structure according to one embodiment of the present disclosure.

[0035] FIG. 3b is a drawing for explaining bimaxillary scan data of an intraoral structure according to one embodiment of the present disclosure.

[0036] FIG. 4 is a drawing for explaining three-dimensional scan data for the surface of a target object according to one embodiment of the present disclosure.

[0037] FIG. 5 is a drawing for explaining the inner surface of an oral appliance according to one embodiment of the present disclosure.

[0038] FIG. 6 is a drawing for explaining the outer surface of an oral appliance according to one embodiment of the present disclosure.

[0039] FIG. 7A is a drawing illustrating an intraoral attachment according to one embodiment of the present disclosure.

[0040] Figure 7b is a cross-sectional view of the intraoral attachment of Figure 7a.

[0041] Figure 8 is a flowchart of an operation of a data processing method according to one embodiment of the present disclosure.

[0042] FIG. 9A is a drawing for explaining a method for creating an intermediate surface of an intraoral attachment according to one embodiment of the present disclosure.

[0043] FIG. 9b is a drawing for explaining a method for creating a mid-surface of an intraoral attachment according to one embodiment of the present disclosure.

[0044] FIG. 10A is a drawing for explaining the periphery of the middle surface of an intraoral attachment according to one embodiment of the present disclosure.

[0045] FIG. 10b is a drawing for explaining the periphery of the middle surface of an intraoral attachment according to one embodiment of the present disclosure.

[0046] FIG. 11A is a drawing for explaining a method for modifying the middle surface of an intraoral attachment according to one embodiment of the present disclosure.

[0047] FIG. 11b is a drawing for explaining a method for modifying the middle surface of an intraoral attachment according to one embodiment of the present disclosure.

[0048] FIG. 12A is a drawing illustrating an intraoral attachment according to one embodiment of the present disclosure.

[0049] Figure 12b is a cross-sectional view of the intraoral attachment of Figure 12a.

[0050] Figure 12c is a cross-sectional view of the intraoral attachment of Figure 12a.

[0051] Figure 12d is a cross-sectional view of the intraoral attachment of Figure 12a.

[0052] FIG. 13 is a drawing illustrating a subject wearing an oral appliance according to one embodiment of the present disclosure.

[0053] FIG. 14 is a drawing for explaining a method for producing an oral attachment according to one embodiment of the present disclosure.

[0054] The various embodiments described in this document are exemplified for the purpose of clearly explaining the technical concept of the present disclosure and are not intended to limit it to a specific embodiment. The technical concept of the present disclosure includes various modifications, equivalents, alternatives, and embodiments selectively combining all or part of each embodiment described in this document. Furthermore, the scope of the technical concept of the present disclosure is not limited to the various embodiments presented below or the specific descriptions thereof.

[0055] Terms used in this document, including technical or scientific terms, unless otherwise defined, may have the meaning commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0056] The expressions "includes," "may include," "comprises," "may have," "have," and "may have" used in this document imply the presence of a target feature (e.g., a function, operation, or component), but do not exclude the presence of other additional features. In other words, such expressions should be understood as open-ended terms that imply the possibility of including other embodiments.

[0057] The singular forms used in this document may include the plural form unless the context clearly indicates otherwise, and this also applies to the singular forms set forth in the claims.

[0058] The expressions "first," "second," or "firstly," "secondly," etc. used in this document, unless the context indicates otherwise, are used to refer to multiple objects and to distinguish one object from another, and do not limit the order or importance among the objects.

[0059] As used herein, the expressions "A, B, and C," "A, B, or C," "A, B, and / or C," or "at least one of A, B, and C," "at least one of A, B, or C," "at least one of A, B, and / or C," "at least one selected from A, B, and C," "at least one selected from A, B, or C," "at least one selected from A, B, and / or C," and the like can mean each of the listed items or all possible combinations of the listed items. For example, "at least one selected from A and B" can refer to (1) A, (2) at least one of A, (3) B, (4) at least one of B, (5) at least one of A and at least one of B, (6) at least one of A and B, (7) at least one of B and A, and (8) both A and B.

[0060] The expression "based on" or "according to" as used in this document is used to describe one or more factors that influence the decision, act of judgment, or action described in the phrase or sentence containing the expression, and this expression does not exclude additional factors that influence the decision, act of judgment, or action.

[0061] As used herein, the expression that a component (e.g., a first component) is “connected” or “connected” to another component (e.g., a second component) may mean that the component is directly connected or connected to the other component, as well as connected or connected via a new other component (e.g., a third component).

[0062] The expression "configured to" as used in this document can have the meanings of "set to", "having the ability to", "modified to", "made to", and "capable of", depending on the context. The expression is not limited to the meaning of "specifically designed in hardware", and for example, a processor configured to perform a specific operation can mean a special purpose computer structured through programming to perform the specific operation.

[0063] FIG. 1 is a drawing for explaining a system for obtaining scan data using a 3D scanner (200) according to one embodiment of the present disclosure.

[0064] According to one embodiment, the 3D scanner (200) may be a dental medical device for acquiring scan data of the surface of an object (20). Here, the surface of the object (20) may be an inner surface of the oral cavity of the object (20).

[0065] For example, the 3D scanner (200) may be an intraoral scanner.

[0066] For example, a user (10) (e.g., a dentist, a dental hygienist) can obtain scan data on the oral structure of a subject (20) (e.g., a patient) from a subject (20) using a 3D scanner (200).

[0067] For example, a user (10) may obtain an image of the oral structure of the subject (20) from a diagnostic model (e.g., plaster model, impression model) that mimics the shape of the oral structure of the subject (20).

[0068] Hereinafter, for convenience of explanation, it is described that scan data for the oral structure of the subject (20) is obtained by scanning the oral structure of the subject (20), but the present disclosure is not limited thereto, and it is also possible to obtain scan data for other parts of the subject (20).

[0069] For example, the 3D scanner (200) may have a form that can be inserted and withdrawn into the oral cavity, and may be a handheld scanner in which the user (10) can freely adjust the scanning distance and scanning angle.

[0070] In one embodiment, a 3D scanner (200) can be inserted into the oral cavity of a subject (20) to scan the oral cavity in a non-contact manner, thereby obtaining scan data on the oral cavity structure.

[0071] For example, scan data for an oral cavity structure may represent an image including a dental region consisting of at least one tooth, a gingival region, an artificial structure that can be inserted into the oral cavity, etc. Here, the artificial structure may include an orthodontic device including a bracket and a wire, an implant, a denture, an orthodontic auxiliary device inserted into the oral cavity, a splint, etc.

[0072] For example, the 3D scanner (200) can irradiate light into the inside of the oral cavity of the subject (20) using a light source (or projector). As a specific example, the 3D scanner (200) can irradiate light into at least a portion of the inside of the oral cavity, such as a tooth area or a gingival area, and can receive light reflected from the inside of the oral cavity of the subject (20) through a camera (or an image sensor). As another example, the 3D scanner (200) can obtain scan data on the intraoral structure by scanning a diagnostic model of the oral cavity. If the diagnostic model of the oral cavity is a diagnostic model modeled after the intraoral structure of the subject (20), the scan data for the diagnostic model of the oral cavity can be scan data on the intraoral structure of the subject (20). For the convenience of explanation, the following description will assume a case in which scan data on the intraoral structure is obtained by scanning the inside of the oral cavity of the subject (20), but the present disclosure is not limited thereto.

[0073] In one embodiment, a three-dimensional scanner (200) can acquire two-dimensional scan data of an intraoral structure of a subject (20) based on information received through a camera. Here, the two-dimensional scan data of the intraoral structure can represent a two-dimensional image of the intraoral structure.

[0074] For example, two-dimensional scan data for the oral cavity structure of the subject (20) may represent a two-dimensional image including the tooth area, gingival area, artificial structure, tongue, etc. inside the oral cavity of the subject (20).

[0075] In one embodiment, two-dimensional scan data of an intraoral structure acquired from a three-dimensional scanner (200) can be transmitted to an electronic device (100) via a wired or wireless communication network.

[0076] For example, the electronic device (100) may be a computer device or a portable communication device. The electronic device (100) may generate three-dimensional scan data of an intraoral structure, which represents the intraoral structure in three dimensions, based on two-dimensional scan data of the intraoral structure received from a three-dimensional scanner (200). As a specific example, the electronic device (100) may generate three-dimensional scan data of the intraoral structure by three-dimensionally modeling the intraoral structure based on the two-dimensional scan data of the intraoral structure received.

[0077] In one embodiment, the 3D scanner (200) can scan the intraoral structure of the object (20) to obtain 2D scan data of the intraoral structure, and generate 3D scan data of the intraoral structure based on the scan data. That is, the 3D scanner (200) can generate 3D scan data of the intraoral structure and transmit it to the electronic device (100).

[0078] In one embodiment, the electronic device (100) may be connected to a cloud server (not shown) or a database (not shown).

[0079] For example, the electronic device (100) can transmit two-dimensional scan data or three-dimensional scan data of the oral structure of the object (200) to a cloud server or database, and the cloud server or database can store the two-dimensional scan data or three-dimensional scan data of the oral structure of the object (20) received from the electronic device (100).

[0080] Although the 3D scanner (200) was described above with a focus on a handheld scanner, the present disclosure can also be applied to a table scanner that is fixed to a specific location and used. That is, the method proposed in the present disclosure can also be implemented using a table scanner. The table scanner can generate 3D scan data for an oral cavity diagnostic model by scanning the oral cavity diagnostic model. Since the light source (or projector) and camera of the table scanner are fixed, the user (10) can scan the oral cavity diagnostic model while moving the oral cavity diagnostic model.

[0081] In one embodiment, the electronic device (100) may be communicatively connected to a printing device (1400).

[0082] For example, the electronic device (100) can generate data for an intraoral fixture that can be installed inside the oral cavity based on a three-dimensional image of the intraoral structure, and transmit the data to the printing device (1400). The printing device (1400) can generate (print) the intraoral fixture based on the data for the intraoral fixture. Here, the intraoral fixture may be a fixture (device) that can be installed inside the oral cavity of a patient, designed for various purposes such as fixing teeth, orthodontic treatment, and tooth protection of the patient. For example, the intraoral fixture may be referred to as a tooth fixing device for fixing teeth of a patient, an orthodontic treatment device for orthodontic treatment of the patient, a tooth protection device for protecting teeth of the patient, etc. For example, the intraoral fixture may include a splint. Meanwhile, the present disclosure is not limited thereto, and the intraoral fixture is a term encompassing various types of devices that can be installed inside the oral cavity, and embodiments of the present disclosure may be applied to such devices even if they are referred to by terms having the same or similar meanings.

[0083] FIG. 2A is a block diagram of an electronic device (100) and a 3D scanner (200) according to one embodiment of the present disclosure.

[0084] In one embodiment, the electronic device (100) and the 3D scanner (200) can be connected to each other through a wired or wireless communication network and can transmit and receive various data to each other.

[0085] In one embodiment, the 3D scanner (200) may include at least one of a processor (201), a memory (202), a communication circuit (203), a light source (204), a camera (205), an input device (206), or a sensor module (sensor) (207). At least one of the components included in the 3D scanner (200) may be omitted, or another component may be added to the 3D scanner (200). Additionally or alternatively, some of the components may be implemented in an integrated manner, or may be implemented as a single or multiple entities. At least some of the components within the 3D scanner (200) may be connected to each other via a bus, a general purpose input / output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI), to exchange data and / or signals.

[0086] In one embodiment, the processor (201) of the 3D scanner (200) is a configuration capable of performing operations or data processing related to control or communication of each component of the 3D scanner (200) and may be operatively connected to the components of the 3D scanner (200). The processor (201) may load commands or data received from other components of the 3D scanner (200) into the memory (202), process the commands or data stored in the memory (202), and store the result data.

[0087] In one embodiment, the memory (202) of the 3D scanner (200) can store at least one instruction for the operation of the processor (201).

[0088] In one embodiment, the communication circuit (203) of the 3D scanner (200) can establish a wired or wireless communication channel with an external device including an electronic device (100) and transmit and receive various data with the external device.

[0089] For example, the communication circuit (203) may include at least one port for connecting to an external device via a wired cable in order to communicate with the external device via a wire. In this case, the communication circuit (203) may communicate with the external device connected via a wired cable through at least one port.

[0090] For example, the communication circuit (203) may be configured to connect to a cellular network (e.g., 3G, LTE, 5G, Wibro, or Wimax) by including a cellular communication module.

[0091] For example, the communication circuit (203) can transmit and receive data with an external device including an electronic device (100) using short-range communication (e.g., Wi-Fi, BLE (Bluetooth, Bluetooth Low Energy), UWB) by including a short-range communication module.

[0092] For example, the communication circuit (203) may include a contactless communication module for contactless communication. As a specific example, the contactless communication may include at least one contactless proximity communication technology, such as near field communication (NFC) communication, radio frequency identification (RFID) communication, or magnetic secure transmission (MST) communication.

[0093] In one embodiment, the light source (204) of the 3D scanner (200) can irradiate light toward the inside of the oral cavity of the object (20).

[0094] For example, the light irradiated from the light source (204) may be structured light having a predetermined pattern. As a specific example, the predetermined pattern may be a stripe pattern in which straight lines of different colors appear continuously. The pattern of the structured light may be generated using a pattern mask or a digital micro-mirror device (DMD), but is not limited thereto.

[0095] In one embodiment, the camera (205) of the 3D scanner (200) can obtain 2D scan data of the intraoral structure of the object (20) by receiving reflected light reflected by the intraoral structure of the object (20).

[0096] For example, the camera (205) may include a left camera corresponding to the left eye field of view and a right camera corresponding to the right eye field of view in order to construct 3D scan data according to an optical triangulation method.

[0097] For example, the camera (205) may include at least one image sensor, such as a CCD sensor or a CMOS sensor.

[0098] In one embodiment, the input device (206) of the 3D scanner (200) can receive user input for controlling the 3D scanner (200).

[0099] For example, the input device (206) may include at least one of a button that receives a push operation from a user (10), a touch panel that detects a touch from a user (10), or a voice recognition device including a microphone.

[0100] For example, a user (10) can control the start or stop of scanning using an input device (206).

[0101] In one embodiment, the sensor module (207) of the 3D scanner (200) can detect the operating state of the 3D scanner (200) or an external environmental state (e.g., a user's movement) and generate an electrical signal corresponding to the detected state.

[0102] For example, the sensor module (207) may include at least one of a gyro sensor, an acceleration sensor, a gesture sensor, a proximity sensor, or an infrared sensor.

[0103] For example, a user (10) can control the start or stop of scanning using a sensor module (207). As a specific example, when a user (10) holds a 3D scanner (200) in his / her hand and moves it, the 3D scanner (200) can control the processor (201) to start a scanning operation when the angular velocity measured through the sensor module (207) exceeds a predetermined threshold value.

[0104] In one embodiment, in response to receiving a user input to initiate a scan via an input device (206) of the 3D scanner (200) or an input device (109) of the electronic device (100), the 3D scanner (200) may initiate a scan.

[0105] In one embodiment, the 3D scanner (200) may start scanning according to processing in the processor (201) of the 3D scanner (200) or the processor (101) of the electronic device (100).

[0106] In one embodiment, when a user (10) scans the intraoral structure of an object (20) through a three-dimensional scanner (200), the three-dimensional scanner (200) can generate two-dimensional scan data for the intraoral structure of the object (20) and transmit the two-dimensional scan data for the intraoral structure of the object (20) to an electronic device (100) in real time.

[0107] For example, the electronic device (100) can display a two-dimensional image of the intraoral structure of the received object (20) represented by the two-dimensional scan data of the intraoral structure through the display (107).

[0108] For example, the electronic device (100) can generate three-dimensional scan data for the intraoral structure of the object (20) based on two-dimensional scan data for the intraoral structure of the object (20). In addition, the electronic device (100) can display a three-dimensional image for the intraoral structure represented by the three-dimensional scan data for the intraoral structure of the object (20) through the display (107). The electronic device (100) can also display the process of generating the three-dimensional scan data for the intraoral structure in real time through the display (107).

[0109] For example, the electronic device (100) may generate data for an intraoral fixture that can be mounted on at least a portion of the intraoral structure based on three-dimensional scan data for the intraoral structure of the subject (20). Here, the data for the intraoral fixture may represent an image for the shape of the intraoral fixture. In addition, the electronic device (100) may display the image for the shape of the intraoral fixture through the display (107). The electronic device (100) may also display the process of generating the data for the intraoral fixture in real time through the display (107).

[0110] In one embodiment, the electronic device (100) may include at least one of one or more processors (101), one or more memories (103), communication circuits (105), a display (107), or an input device (109). At least one of the components included in the electronic device (100) may be omitted, or another component may be added to the electronic device (100). Additionally or alternatively, some of the components may be implemented in an integrated manner, or may be implemented as a single or multiple entities. At least some of the components within the electronic device (100) may be connected to each other via a bus, GPIO, SPI, MIPI, or the like, to exchange signals or data.

[0111] In one embodiment, one or more processors (101) of the electronic device (100) may be configured to perform operations or data processing related to control or communication of each component of the electronic device (100).

[0112] For example, one or more processors (101) may be operatively connected to components of the electronic device (100). The one or more processors (101) may load commands or data received from other components of the electronic device (100) into one or more memories (103), process commands or data stored in the one or more memories (103), and store result data.

[0113] In one embodiment, one or more memories (103) of the electronic device (100) may store at least one instruction for the operation of one or more processors (101).

[0114] For example, one or more memories (103) can store data received from a three-dimensional scanner (200) (e.g., two-dimensional scan data or three-dimensional scan data of an intraoral structure).

[0115] In one embodiment, the communication circuit (105) of the electronic device (100) establishes a wired or wireless communication channel with an external device including at least one 3D scanner (200), a cloud server (not shown), a printer device (1400), etc., and can transmit and receive various data with the external device.

[0116] For example, the communication circuit (105) may include at least one port for connecting to an external device via a wired cable in order to communicate with the external device via a wire. In this case, the communication circuit (105) may communicate with the external device via the wired connection through at least one port.

[0117] For example, the communication circuit (105) may be configured to connect to a cellular network (e.g., 3G, LTE, 5G, Wibro, or Wimax) by including a cellular communication module.

[0118] For example, the communication circuit (105) can transmit and receive data with an external device including at least one 3D scanner (200), a cloud server (not shown), a printer device (1400), etc., using short-range communication (e.g., Wi-Fi, BLE, UWB) including a short-range communication module.

[0119] For example, the communication circuit (105) may include a contactless communication module for contactless communication. As a specific example, the contactless communication may include at least one contactless proximity communication technology, such as NFC communication, RFID communication, or MST communication.

[0120] In one embodiment, the display (107) of the electronic device (100) can display various screens based on the control of the processor (101).

[0121] For example, the processor (101) of the electronic device (100) can control components of the electronic device (100) to display two-dimensional scan data or three-dimensional scan data of the oral structure of the object (20) through the display (107).

[0122] For example, the processor (101) may control components of the electronic device (100) to display data about an intraoral appliance that may be mounted on at least a portion of the oral cavity of the subject (20) through the display (107).

[0123] For example, a specific application execution screen may be displayed on the display (107) of the electronic device (100), and two-dimensional scan data or three-dimensional scan data of an intraoral structure may be displayed on the execution screen. In addition, data on an intraoral appliance may be displayed on the execution screen. Here, a web browser or application for executing a specific application may be installed on the electronic device (100). The user (10) may edit, save, and delete the two-dimensional scan data or three-dimensional scan data of an intraoral structure displayed on the display (107) using the input device (109). In addition, the user (10) may edit, save, and delete the data on an intraoral appliance displayed on the display (107) using the input device (109).

[0124] In one embodiment, an input device (109) of an electronic device (100) may receive commands or data to be used by components of the electronic device (100) (e.g., one or more processors (101)) from an external source of the electronic device (100) (e.g., a user (10)).

[0125] For example, the input device (109) may be implemented in the form of a touch sensor panel that is combined with the display (107) and can recognize contact or proximity of various external objects.

[0126] FIG. 2b is a perspective view of a 3D scanner (200) according to one embodiment of the present disclosure.

[0127] In one embodiment, the 3D scanner (200) may include a main body (210) and a probe tip (220).

[0128] For example, the main body (210) may be in a shape that is easy for a user (10) to hold by hand.

[0129] For example, the probe tip (220) may be of a shape that is easy to insert and withdraw into the oral cavity of the subject (20).

[0130] For example, the main body (210) can be coupled and separated from the probe tip (220).

[0131] For example, components of the 3D scanner (200) described in FIG. 2A may be arranged inside the main body (210).

[0132] For example, an opening may be formed at one end of the main body (210) so that light output from a light source (204) can be irradiated into the oral cavity of the subject (20). The light irradiated through the opening may be reflected by the oral cavity structure of the subject (20) and then enter through the opening again. The reflected light entering through the opening may be captured by a camera (205) to generate two-dimensional scan data of the oral cavity structure of the subject (20).

[0133] For example, a user (10) can start scanning using an input device (206) (e.g., a button) of a 3D scanner (200). As a specific example, when the user (10) touches or presses the input device (206), light from a light source (204) can be irradiated onto the object (20).

[0134] In one embodiment, a user (10) can scan the intraoral structure of a target object (20) by moving a 3D scanner (200), and the 3D scanner (200) can obtain 2D scan data for the intraoral structure of the target object (20).

[0135] In one embodiment, a user may scan a diagnostic model of the oral cavity of a subject (20) by moving a three-dimensional scanner (200), and in the process, acquire two-dimensional scan data for the diagnostic model. Here, the two-dimensional scan data for the diagnostic model may represent an image of the shape of the intraoral structure.

[0136] For example, two-dimensional scan data for an oral cavity structure may represent a two-dimensional image for an area including the front teeth of the object (20), a two-dimensional image for an area including the molars of the object (20), etc.

[0137] For example, the 3D scanner (200) can transmit the acquired 2D scan data to the electronic device (100). In this case, the electronic device (100) can generate 3D scan data for the intraoral structure based on the received 2D scan data for the intraoral structure. Here, the 3D scan data for the intraoral structure can include at least one of maxillary scan data, mandibular scan data, or bimaxillary (occlusion) scan data of the intraoral structure.

[0138] FIG. 3A is a diagram illustrating maxillary scan data (301) and mandibular scan data (302) of an intraoral structure according to one embodiment of the present disclosure. FIG. 3B is a diagram illustrating bimaxillary scan data (300) of an intraoral structure according to one embodiment of the present disclosure.

[0139] In one embodiment, the three-dimensional scan data for the surface of the object (20) may include at least one of maxillary scan data (301), mandibular scan data (302), or bimaxillary scan data (300). Here, the surface of the object (20) may include the surface of an intraoral structure of the object (20).

[0140] In one embodiment, the maxillary scan data (301) may be three-dimensional scan data for the maxillary surface generated based on two-dimensional scan data obtained as a result of scanning the maxillary surface within the oral cavity.

[0141] For example, maxillary scan data (301) may represent a tooth region (311) and a gingival region (321) within the maxilla.

[0142] For example, based on maxillary scan data (301), data for an intraoral appliance that can be mounted on the maxilla inside the oral cavity can be generated.

[0143] In one embodiment, the mandibular scan data (302) may be three-dimensional scan data for the mandibular surface generated based on two-dimensional scan data obtained as a result of scanning the mandibular surface within the oral cavity.

[0144] For example, the mandibular scan data (302) may represent a tooth region (312) and a gingival region (322) within the mandible.

[0145] For example, based on the mandibular scan data (302), data for an intraoral appliance that can be mounted on the mandible inside the oral cavity can be generated.

[0146] In one embodiment, the bimaxillary scan data (300) may be three-dimensional scan data of the bimaxillary surface generated based on two-dimensional scan data acquired as a result of scanning the maxillary and mandibular surfaces within the oral cavity. Alternatively, the bimaxillary scan data (300) may also be generated based on maxillary scan data (301) and mandibular scan data (302). In other words, the bimaxillary scan data (300) may be scan data representing an image generated by synthesizing an image represented by the maxillary scan data (301) and an image represented by the mandibular scan data (302).

[0147] For example, based on the bimaxillary scan data (300), data for an intraoral appliance that can be simultaneously mounted on the maxilla and mandible inside the oral cavity can be generated.

[0148] Hereinafter, the description of the data processing method proposed in the present disclosure will proceed assuming that data for an intraoral appliance is generated based on mandibular scan data (302). However, this is merely for convenience of explanation, and the embodiments of the present disclosure are not limited thereto. In other words, the description below can be equally applied even when data for an intraoral appliance is generated based on maxillary scan data (301) or bimaxillary scan data (300).

[0149] FIG. 4 is a drawing for explaining three-dimensional scan data (400) for the surface of a target object (20) according to one embodiment of the present disclosure.

[0150] The 3D scan data (400) for the surface of the object (20) of FIG. 4 may be mandibular scan data (302) for the surface of the mandible among the oral structures of the object (20).

[0151] In one embodiment, the three-dimensional scan data (400) may represent at least a portion of a mandibular tooth region (410) or a gingival region (420).

[0152] FIG. 5 is a drawing for explaining the inner surface (500) of an oral attachment according to one embodiment of the present disclosure.

[0153] In one embodiment, the electronic device (100) can generate an inner surface (500) of an intraoral fixture based on three-dimensional scan data. That is, the electronic device (100) can generate first data for the inner surface (500) of the intraoral fixture based on three-dimensional scan data.

[0154] For example, the electronic device (100) can set an occlusal plane and a midline for the 3D scan data (400). Accordingly, the 3D scan data (400) can be automatically aligned according to the occlusal plane and aligned left and right by the midline.

[0155] For example, a user (10) can manually designate a reference point on the 3D scan data (400) to set the front direction and occlusal plane of the 3D scan data (400), and align the 3D scan data (400) along the set occlusal plane. As a specific example, the user (10) can select some data of the 3D scan data (400) through the input device (109) of the electronic device (100), and align the 3D scan data (400) using the selected data as a reference point.

[0156] For example, the electronic device (100) can generate an inner surface (500) of an intraoral implant based on aligned three-dimensional scan data (400).

[0157] For example, the electronic device (100) may designate a direction in which an intraoral fixture is to be inserted toward at least a portion of an intraoral structure represented by the 3D scan data (400) based on an undercut of the aligned 3D scan data (400). As a specific example, the electronic device (100) may designate a direction in which an intraoral fixture is to be inserted based on an area of ​​a tooth region in the 3D scan data (400), an undercut, and a block-out according to the direction in which the intraoral fixture is to be inserted.

[0158] For example, the electronic device (100) can generate the inner surface (500) of the intraoral fixture based on the inner surface offset value, surface smoothness, etc. As a specific example, the electronic device (100) can receive the inner surface offset value, surface smoothness, etc. through the input device (109), and generate the inner surface (500) of the intraoral fixture based thereon. Here, the inner surface offset value can be a normal distance between the three-dimensional scan data (400) and the intraoral fixture. In addition, the surface smoothness can mean the roughness of the intraoral fixture.

[0159] For example, among the surfaces forming the shape of the intraoral fixture, the inner surface (500) of the intraoral fixture may be a surface that contacts at least a portion of the tooth region (410) or the gingival region (420) located in the direction in which the intraoral fixture is inserted toward at least a portion of the intraoral structure indicated by the three-dimensional scan data (400). That is, at least a portion of the tooth region (410) or the gingival region (420) may be surrounded by the inner surface (500) of the intraoral fixture.

[0160] FIG. 6 is a drawing for explaining the outer surface (600) of an oral attachment according to one embodiment of the present disclosure.

[0161] In one embodiment, the electronic device (100) can designate the outline of the intraoral fixture based on the buccal height, the lingual height, etc. Here, the outline of the intraoral fixture can be a boundary line indicating the shape of the intraoral fixture.

[0162] For example, the electronic device (100) can receive the buccal height, the lingual height, etc. through the input device (109), and designate the outline of the oral appliance based on this. Here, the buccal height may be the height of the outer wall of the tooth facing the cheek with respect to the lower surface of the tooth region (410). The higher the buccal height, the closer the buccal contour formed may be to the gingival region (420). In addition, the lingual height may be the height of the inner wall of the tooth facing the tongue with respect to the lower surface of the tooth region (410). The higher the lingual height, the closer the lingual contour formed may be to the gingival region (420).

[0163] In one embodiment, the electronic device (100) may generate an outer surface (600) of the intraoral fixture based on the aligned three-dimensional scan data (400) of the contour of the intraoral fixture. Here, among the surfaces forming the shape of the intraoral fixture, the outer surface (600) of the intraoral fixture may be a surface that does not contact the tooth region (410) or the gingival region (420) located in the direction in which the intraoral fixture is inserted toward at least a portion of the intraoral structure indicated by the three-dimensional scan data (400). That is, the outer surface (600) of the intraoral fixture is spaced apart from the tooth region (410) or the gingival region (420) when the intraoral fixture is actually mounted.

[0164] For example, the electronic device (100) may generate an outer surface (600) by performing a smoothing operation and a flattening operation on an image generated based on the inner surface (500) and contour of the intraoral fixture. Here, the smoothing operation may include Laplacian smoothing that minimizes the surface area by minimizing the curvature of surfaces with respect to the outer surface (600) of the intraoral fixture. In addition, the flattening operation may include an operation of generating a block shell through a convex hull algorithm for vertices in the image on which the smoothing operation was performed, and correcting the vertices in the image according to the characteristics of the convex hull according to the generated block shell. The characteristics of the convex hull may be to move the position by weighting the distance to the outermost surface of the block shell generated by the convex hull algorithm for the vertex. That is, the image can be corrected based on a Bezier curve generated by varying the weights according to the area for the vertices in the image where the smoothing operation was performed.

[0165] FIG. 7A is a drawing illustrating an intraoral attachment (700) according to one embodiment of the present disclosure. FIG. 7B is a cross-sectional view of the intraoral attachment (700) of FIG. 7A taken along line A-A'.

[0166] In one embodiment, the surface of the oral attachment (700) may be composed of an inner surface (500) and an outer surface (600).

[0167] In one embodiment, the inner surface (500) and the outer surface (600) of the intraoral fixture (700) may be spaced apart by an outer surface offset value set in the normal direction of the inner surface (500). Meanwhile, a boundary area (dotted line) may be set for the inner surface (500) and the outer surface (600) of the intraoral fixture (700), and the distance between the vertex of the inner surface (500) and the vertex of the outer surface (600) within the boundary area may be set to be smaller than the outer surface offset value as the distance approaches the contour. Accordingly, the distance between the inner surface (500) and the outer surface (600) may become thinner as the intraoral fixture (700) approaches the gingival region (420).

[0168] In one embodiment, the inner surface (500) of the intraoral fixture (700) can accommodate at least a portion of a tooth area (410) or a gingival area (420) positioned in the direction in which the intraoral fixture (700) is inserted.

[0169] In one embodiment, the outer surface (600) of the intraoral fixture (700) may be formed to surround the inner surface (500) along the contour of the intraoral fixture (700).

[0170] Meanwhile, as shown in the adjacent area A' of FIG. 7b, the inner surface (500) and the outer surface (600) of the intraoral fixture (700) may be connected in an angular shape. As the inner surface (500) and the outer surface (600) are connected in an angular shape, the contact area between the periphery of the intraoral fixture (700) and the gingival area (420) in the adjacent area A' is formed narrowly in an angular shape, so that the wearer may experience discomfort or pain as the pressure is concentrated in the contact area. This pressure concentration causes continuous irritation or pressure on the gingiva, and in the long term, there is a possibility of causing side effects such as damage or inflammation of the surrounding tissue. In particular, since the contact area between the outer surface (600) and a specific area within the oral cavity (e.g., the frenulum area between the lip area and the gingival area) is large, if different materials are applied to the inner surface (500) and the outer surface (600), such as applying a material that is relatively harder than the inner surface (500) to the outer surface (600), while the contact area between the periphery of the intraoral fixture (700) and the gingival area (420) is formed narrowly, the wearer of the intraoral fixture (700) may feel a more distinct sense of incongruity in the contact area between the periphery of the intraoral fixture (700) and the gingival area (420). In this way, in order to improve the wearing comfort of the intraoral fixture (700), it is important that the inner surface (500) and the outer surface (600) are smoothly connected to form a sufficiently wide and flat contact area between the periphery of the intraoral fixture (700) and the gingival area (420). This design optimizes pressure distribution in the contact area between the periphery of the intraoral appliance (700) and the gingival region (420), thereby contributing to reducing wearer discomfort and minimizing irritation of oral tissues. Furthermore, even when two or more materials are applied to the intraoral appliance (700), this design can help prevent the wearer from experiencing a sense of discomfort.Accordingly, the present disclosure proposes a method for more conveniently producing an intraoral attachment (700) having excellent wearability while applying two or more materials.

[0171] Figure 8 is a flowchart of an operation of a data processing method according to one embodiment of the present disclosure.

[0172] At step 810, the electronic device (100) can generate first data for the inner surface (500) of the oral appliance based on three-dimensional scan data for the surface of the object (20).

[0173] In one embodiment, the three-dimensional scan data for the surface of the object (20) may include at least one of maxillary scan data (301) for the maxillary surface in the oral cavity of the object, mandibular scan data (302) for the mandibular surface, or bimaxillary scan data (300) for the bimaxillary surface.

[0174] In one embodiment, the first data regarding the inner surface (500) of the intraoral fixture may include one or more points that constitute the shape of the inner surface (500) of the intraoral fixture. That is, the inner surface (500) of the intraoral fixture may be composed of one or more points. Accordingly, the operation of generating the first data regarding the inner surface (500) of the intraoral fixture may be expressed as an operation of generating the inner surface (500) of the intraoral fixture.

[0175] In one embodiment, the electronic device (100) can set an occlusal plane and a midline for three-dimensional scan data on the surface of the object (20), and align the three-dimensional scan data according to the occlusal plane and the midline.

[0176] In one embodiment, the electronic device (100) can determine the direction in which the oral appliance is to be inserted based on an undercut of three-dimensional scan data of the surface of the object (20).

[0177] In one embodiment, the electronic device (100) can determine an inner surface offset value, which is a distance between three-dimensional scan data for the surface of the object (20) and the inner surface (500) of the intraoral fixture. That is, each point indicated by the three-dimensional scan data for the surface of the object (20) and each point of the inner surface (500) of the intraoral fixture can be spaced apart by the inner surface offset value.

[0178] For example, the electronic device (100) can receive an internal offset value from the user (10) through the input device (109).

[0179] In one embodiment, the electronic device (100) can generate first data about the inner surface (500) of the intraoral fixture based on at least one of the aligned three-dimensional scan data, the direction in which the intraoral fixture is to be inserted toward at least a portion of the intraoral structure, or an inner surface offset value.

[0180] At step 820, the electronic device (100) can generate second data about the outer surface (600) of the intraoral appliance based on first data about the inner surface (500) of the intraoral appliance.

[0181] In one embodiment, the second data regarding the outer surface of the intraoral appliance may include one or more points that constitute the shape of the outer surface of the intraoral appliance. That is, the outer surface of the intraoral appliance may be composed of one or more points. Accordingly, the operation of generating the second data regarding the outer surface (600) of the intraoral appliance may be expressed as the operation of generating the outer surface (600) of the intraoral appliance.

[0182] In one embodiment, the electronic device (100) can determine the outline of the intraoral implant based on the shape, buccal height, or lingual height of the inner surface (500) of the intraoral implant.

[0183] For example, the electronic device (100) can determine the buccal height of the oral appliance. As a specific example, the electronic device (100) can receive the buccal height input from the user (10) via the input device (109).

[0184] For example, the electronic device (100) can determine the lingual height of the oral appliance. As a specific example, the electronic device (100) can receive the lingual height input from the user (10) through the input device (109).

[0185] In one embodiment, the electronic device (100) can generate second data about an outer surface (600) of the intraoral appliance based on the contour of the intraoral appliance.

[0186] For example, the electronic device (100) can perform a smoothing operation or a flattening operation on the outer surface (600) of the oral appliance.

[0187] At step 830, the electronic device (100) may generate third data for an intermediate surface (900) of the intraoral fixture based on first data for the inner surface (500) of the intraoral fixture and second data for the outer surface (600). Here, the intermediate surface (900) of the intraoral fixture may be an object generated to be positioned between the inner and outer surfaces of the intraoral fixture. For example, the intermediate surface of the intraoral fixture may be a virtual surface generated to be positioned between the inner and outer surfaces of the intraoral fixture. Hereinafter, a method for generating an intermediate surface of the intraoral fixture will be described in detail with reference to FIGS. 9A and 9B.

[0188] FIGS. 9A and 9B are drawings illustrating a method for creating an intermediate surface (900) of an intraoral attachment according to one embodiment of the present disclosure. FIG. 9B is a cross-sectional view taken along line A-A' of the inner surface (500) and intermediate surface (900) of an intraoral attachment according to one embodiment of the present disclosure.

[0189] In one embodiment, the electronic device (100) can create an intermediate surface (900) of the intraoral fixture located between the inner surface (500) and the outer surface (600) of the intraoral fixture. Here, the shape of the intermediate surface (900) of the intraoral fixture can be the same as or different from the shape of the inner surface (500) of the intraoral fixture.

[0190] In one embodiment, the electronic device (100) can move the inner surface (500) of the oral implant by a predetermined offset value to create an intermediate surface (900).

[0191] For example, the electronic device (100) can identify one or more offset points by moving each point of the inner surface (500) of the intraoral fixture by a predetermined offset value, and generate an intermediate surface (900) of the intraoral fixture based on the one or more offset points. That is, the intermediate surface (900) of the intraoral fixture can be composed of one or more offset points.

[0192] For example, the electronic device (100) can identify a first point on the inner surface (500) of the intraoral fixture and a normal vector to the inner surface (500) from the first point. The electronic device (100) can identify a first offset point that is spaced apart from the first point by a first offset value in the direction of the identified normal vector. Here, the first offset value can be a value smaller than a minimum distance between one or more points constituting the inner surface (500) and one or more points constituting the outer surface (600). The electronic device (100) can identify one or more first offset points by applying the first offset value to all points on the inner surface (500) of the intraoral fixture.

[0193] For example, based on whether one or more first offset points are located between the inner surface (500) and the outer surface (600) of the intraoral fixture and whether the minimum distance between the one or more first offset points and one or more points constituting the outer surface (600) is greater than a predetermined value, the electronic device (100) can identify a second point of the intermediate surface (900) of the intraoral fixture corresponding to each point of the inner surface (500) of the intraoral fixture. Here, the predetermined value compared with the minimum distance between the one or more first offset points and one or more points constituting the outer surface (600) may be a reference distance set to prevent the outer layer of the intraoral fixture formed by the intermediate surface (900) and the outer surface (600) from being formed thinly or to prevent the intermediate surface (900) and the outer surface (600) from partially overlapping. For example, the reference distance may be determined in advance. For example, if the minimum distance between one or more points forming the inner surface (500) and one or more points forming the outer surface (600) is 0.2 mm, the reference distance may be preset to 0.1 mm, which is half of the minimum distance. As another example, the reference distance may be set by the user (10). As a specific example, the electronic device (100) may receive an input regarding the reference distance from the user (10).

[0194] For example, in response to one or more first offset points being located between the inner surface (500) and the outer surface (600) of the intraoral fixture and a minimum distance between one or more first offset points and one or more points constituting the outer surface (600) being greater than a predetermined value, the electronic device (100) may identify one or more second points of the intermediate surface (900) of the intraoral fixture as being identical to one or more first offset points. That is, the intermediate surface (900) of the intraoral fixture may be generated to be composed of one or more first offset points.

[0195] For example, in response to one or more first offset points being located between the inner surface (500) and the outer surface (600) of the intraoral fixture and a minimum distance between one or more first offset points and one or more points constituting the outer surface (600) being less than or equal to a predetermined value, the electronic device (110) can identify a second offset point that is spaced apart from the first offset point by a second offset value in a direction opposite to the direction of a normal vector to the first offset point at a point on the inner surface (500) of the intraoral fixture corresponding to the first offset point. The electronic device (100) can identify one or more second offset points by applying a second offset value to a first offset point whose minimum distance from one or more points constituting the outer surface (600) is less than or equal to a predetermined value. Here, the second offset value may be a value such that the minimum distance between the first offset point and one or more points of the outer surface (600) is greater than the predetermined value. Alternatively, the electronic device (100) can identify one or more second offset points by applying the second offset value to all first offset points. Based on whether one or more second offset points are located between the inner surface (500) and the outer surface (600) of the intraoral fixture and the minimum distance between one or more second offset points and one or more points constituting the outer surface (600) is greater than the predetermined value, the electronic device (100) can identify a point of the intermediate surface (900) corresponding to each point of the inner surface (500) of the intraoral fixture.

[0196] For example, in response to at least some of the first offset points not being located between the inner surface (500) and the outer surface (600) of the intraoral fixture, the electronic device (100) can identify a second offset point that is spaced from the first offset point by a third offset value in a direction opposite to a direction of a normal vector to the first offset point at a point on the inner surface (500) of the intraoral fixture that corresponds to the first offset point not being located between the inner surface (500) and the outer surface (600) of the intraoral fixture. Here, the third offset value may be a value such that the first offset point is located between the inner surface (500) and the outer surface (600) of the intraoral fixture. Alternatively, the third offset value may be a value such that the first offset point is located between the inner surface (500) and the outer surface (600) of the intraoral fixture while a minimum distance between the first offset point and one or more points on the outer surface (600) is greater than a predetermined value. The electronic device (100) can identify one or more second offset points by applying a third offset value to all first offset points that are not located between the inner surface (500) and the outer surface (600) of the intraoral fixture. Alternatively, the electronic device (100) can identify one or more second offset points by applying a third offset value to all first offset points. Based on whether all second offset points are located between the inner surface (500) and the outer surface (600) of the intraoral fixture and a minimum distance between one or more second offset points and one or more points constituting the outer surface (600) is greater than a predetermined value, the electronic device (100) can identify a point on the intermediate surface (900) corresponding to each point on the inner surface (500) of the intraoral fixture.

[0197] As described above, the electronic device (100) can identify all points of the intermediate surface (900) corresponding to each point of the inner surface (500) of the intraoral fixture by performing an operation of identifying offset points until all offset points are located between the inner surface (500) and the outer surface (600) of the intraoral fixture and the minimum distance between all offset points and one or more points constituting the outer surface (600) is greater than a predetermined value. Accordingly, as illustrated in FIG. 9b, a specific point of the inner surface (500) of the intraoral fixture and a specific point of the intermediate surface (900) corresponding thereto can be spaced apart by a predetermined offset value.

[0198] For example, an offset value indicating a distance between two different points may be set by the user (10). Here, the offset value may include the first offset value, the second offset value, the third offset value, etc. of the above-described example. As a specific example, the electronic device (100) may receive an input for the first offset value from the user (10) through the input device (109). Alternatively, the electronic device (100) may receive an input for the second offset value from the user (10) through the input device (109). Alternatively, the electronic device (100) may receive an input for the third offset value from the user (10) through the input device (109).

[0199] As another example, an offset value representing a distance between two different points may be determined by the electronic device (100). As a specific example, the electronic device (100) may identify a plurality of point pairs based on all points on the inner surface (500) of the intraoral fixture and all points on the outer surface (600) of the intraoral fixture. Here, each point on the inner surface (500) of the intraoral fixture may have a one-to-one correspondence with each point on the outer surface (600). Here, each point pair may be composed of one point on the inner surface (500) of the intraoral fixture and one point on the outer surface (600) corresponding thereto. The electronic device (100) may identify a point pair having the closest distance between the points among the plurality of point pairs. Thereafter, the electronic device (100) may determine an offset value based on the point pair having the closest distance between the points. Here, the offset value may include the first offset value of the example described above. For example, consider a pair of points (P of the inner surface (500)) i ) Point (P) of the exterior (600) o )) when expressed as (P i1 , P o1 ), (P i2 , P o2 ) and (P i3 , P o3 ), for example, the electronic device (100) is at a distance 1 (P i1 Wow P o1 distance between), distance 2(P i2 Wow P o2 distance between) and distance 3(P i3 Wow P o3 The distance between points can be calculated, and the distance between the points forming the pair of points with the shortest distance can be determined as an offset value.

[0200] In one embodiment, the electronic device (100) can generate an intermediate surface (900) by identifying intermediate points between the inner surface (500) and the outer surface (600) of the oral appliance.

[0201] For example, the electronic device (100) can identify a plurality of point pairs based on all points on the inner surface (500) and all points on the outer surface (600) of the intraoral fixture. Here, each point on the inner surface (500) of the intraoral fixture can have a one-to-one correspondence with each point on the outer surface (600). Here, each point pair can be composed of one point on the inner surface (500) of the intraoral fixture and one point on the outer surface (600) corresponding thereto. The electronic device (100) can identify a plurality of intermediate points based on the plurality of point pairs. Here, each intermediate point can be located between one point on the inner surface (500) and one point on the outer surface (600) of the intraoral fixture constituting each point pair. As a specific example, each intermediate point can be an intermediate value between one point on the inner surface (500) and one point on the outer surface (600) of the intraoral fixture constituting each point pair. The electronic device (10) can generate an intermediate surface (900) based on a plurality of intermediate points. That is, the intermediate surface (900) of the oral appliance can be composed of a plurality of intermediate points. A plurality of point pairs (points (P) of the inner surface (500) i ) Point (P) of the exterior (600) o )) when expressed as (P i1 , P o1 ), (P i2 , P o2 ) and (P i3 , P o3 ) as an example, the electronic device (100) is P i1 and P o1 P located between m1 , P i2 and P o2 P located between m2, P i3 and P o3 P located between m3 can be identified. The electronic device (100) is P m1 , P m2 and P m3 By identifying them, an intermediate surface (900) composed of them can be created.

[0202] In one embodiment, the electronic device (100) can modify third data regarding the intermediate surface (900) of the intraoral fixture. Here, the operation of modifying the third data regarding the intermediate surface (900) can be expressed as an operation of modifying the intermediate surface (900). Hereinafter, the necessity and method of modifying the intermediate surface (900) of the intraoral fixture will be specifically described with reference to FIGS. 10a, 10b, 11a, and 11b.

[0203] FIGS. 10A and 10B are drawings for explaining the periphery of the intermediate surface (900) of an intraoral attachment according to one embodiment of the present disclosure. FIG. 10A is a two-dimensional cross-sectional view taken along line A-A' of the inner surface (500), the intermediate surface (900), and the outer surface (600) of the intraoral attachment, illustrating an example in which a bend occurs in the periphery of the intermediate surface (900). FIG. 10B is a three-dimensional view of the inner surface (500), the intermediate surface (900), and the outer surface (600) of the intraoral attachment, illustrating an example in which a bend occurs in the periphery of the intermediate surface (900).

[0204] Referring to FIGS. 6, 9a, and 9b, the outer surface (600) and the intermediate surface (900) of the intraoral fixture may be generated based on the same inner surface (500) by applying different methods. For example, referring to FIG. 6, the process of generating the outer surface (600) may include a correction process such as smoothing, whereas the process of generating the intermediate surface (900) may not include such a correction process. Accordingly, one or more points constituting the periphery of the inner surface (500), one or more points constituting the periphery of the outer surface (600), and one or more points constituting the periphery of the intermediate surface (900) may not be located in a straight line. Referring to the examples of FIGS. 10a and 10b, when the electronic device (100) generates the intermediate surface (900) of the intraoral fixture, a specific point (P) of the inner surface (500) of the intraoral fixture may be located in a straight line. i ), a specific point (P) of the corresponding outer surface (600) o ) is located on a single straight line (L), but a specific point (P) of the mid-plane (900) m ) is not located at the straight line (L), but at a specific point (P) on the inner surface (500) of the oral appliance with a curved line (L'). i ) and a specific point (P) on the outer surface (600) of the oral attachment o ) can be connected. In this state, if all points on the inner surface (500) of the intraoral fixture and all points on the intermediate surface (900) are connected to each other in correspondence, and all points on the intermediate surface (900) and all points on the outer surface (600) are connected to each other in correspondence, a bend occurs in at least a part of the intraoral fixture as shown in FIGS. 10a and 10b, and such a bend may worsen the wearing comfort of the intraoral fixture.

[0205] FIGS. 11A and 11B are drawings for explaining a method for modifying an intermediate surface (900) of an intraoral fixture according to one embodiment of the present disclosure. FIG. 11A is a two-dimensional cross-sectional view taken along line A-A' of an inner surface (500), an intermediate surface (900), and an outer surface (600) of an intraoral fixture, illustrating an example in which there is no curvature in the periphery of the intermediate surface (900) as a result of modifying the intermediate surface (900) of the intraoral fixture. FIG. 11B is a three-dimensional view of an inner surface (500), an intermediate surface (900), and an outer surface (600) of an intraoral fixture, illustrating an example in which there is no curvature in the periphery of the intermediate surface (900) as a result of modifying the intermediate surface (900) of the intraoral fixture.

[0206] In one embodiment, the electronic device (100) is configured to select a specific point (P) of the periphery of the intermediate surface (900) among one or more points forming the periphery of the inner surface (500). m ) and the point with the shortest distance (P i ) can be identified. In addition, the electronic device (100) can identify a specific point (P) of the periphery of the middle surface (900) among one or more points constituting the periphery of the outer surface (600). m ) and the point with the shortest distance (P o ) can be identified. The electronic device (100) can identify a specific point (P) on the periphery of the inner surface (500) i ) and a specific point (P) on the periphery of the outer surface (600) o ) on a specific point (P) on a straight line (L) connecting m' ) can be modified to include the intermediate surface (900). Accordingly, a specific point (P) included in the intermediate surface (900) m' ) constitutes the periphery of the intermediate surface (900). The electronic device (100) performs the above operation on at least some of all points of the periphery of the intermediate surface (900) of the intraoral fixture, thereby allowing the points of the periphery of the intermediate surface (900) of the intraoral fixture to be positioned on a straight line connecting the points of the inner surface (500) and the points of the periphery of the outer surface (600).

[0207] For example, the electronic device (100) may be configured to have a specific point (P) on the periphery of the inner surface (500). i ) and a specific point (P) on the periphery of the outer surface (600) o ) is located on a straight line (L) connecting the inner surface (500) and a specific point (P) on the periphery of the inner surface i ) is a point (P) spaced apart from the fourth offset value m' ) can be identified. The electronic device (100) identifies the point (P) at which the intermediate surface (900) is identified. m' ) can be modified to include the intermediate surface (900). Accordingly, a specific point (P) included in the intermediate surface (900) m' ) constitutes the periphery of the intermediate surface (900). The electronic device (100) can perform the above operation on at least some of all points of the periphery of the intermediate surface (900) of the oral appliance, thereby positioning the points of the periphery of the intermediate surface (900) on a straight line connecting the points of the periphery of the inner surface (500) and the points of the periphery of the outer surface (600). Meanwhile, the fourth offset value can be set by the user (10). As a specific example, the electronic device (100) can receive the fourth offset value from the user (10) through the input device (109).

[0208] In one embodiment, the electronic device (100) receives a specific point (P) from the user (10) via an input device (109) on the periphery of the mid-surface (900) of the intraoral fixture. m ) can receive an input to move the oral cavity. The electronic device (100) can move a specific point (P) of the inner surface (500) of the oral cavity based on the input of the user (10). i ) and a specific point (P) of the exterior (600) o ) is located on a straight line connecting the inner surface (500) and a specific point (P i ) from a point (P m' ) can be identified. The electronic device (100) identifies the point (P) at which the intermediate surface (900) is identified. m') can be modified to include the intermediate surface (900). Accordingly, a specific point (P) included in the intermediate surface (900) m' ) constitutes the periphery of the middle surface (900). Here, a specific point (P) of the middle surface (900) of the oral attachment m ) is moved to a specific point (P) inside (500). i ) and a specific point (P) of the exterior (600) o ) is located on a straight line connecting the inner surface (500) and a specific point (P i ) from a point (P m' ) can contain three-dimensional coordinates.

[0209] In this way, by modifying the intermediate surface (900) so that the points of the periphery of the intermediate surface (900) of the intraoral fixture are positioned on a straight line connecting the points of the periphery of the inner surface (500) and the points of the periphery of the outer surface (600) of the intraoral fixture, the inner surface (500), the outer surface (600), and the intermediate surface (900) of the intraoral fixture are smoothly connected without any curves, so that the contact area between the intraoral fixture and the gingival area can be formed sufficiently wide and flat, thereby further improving the wearing comfort of the intraoral fixture and further increasing the aesthetic value that can be felt by the wearer of the intraoral fixture. Furthermore, as described below, even if two or more materials are applied to the intraoral fixture, the wearer of the intraoral fixture can be prevented from feeling a significant sense of incongruity in the area where the intraoral fixture and a part of the intraoral structure come into contact.

[0210] FIGS. 12A and 12D are drawings illustrating an intraoral attachment (1200) according to one embodiment of the present disclosure. FIG. 12A is a three-dimensional drawing of the intraoral attachment (1200), and FIGS. 12B to 12D are cross-sectional views of the intraoral attachment (1200) taken along line A-A'.

[0211] Referring to FIG. 12A, the oral attachment (1200) may include a first portion (1210) and a second portion (1220).

[0212] In one embodiment, the electronic device (100) can identify the area between the inner surface (500) and the middle surface (900) of the intraoral fixture (1200) as the first portion (1210) of the intraoral fixture (1200).

[0213] For example, the first part (1210) of the intraoral fixture (1200) is an inner layer of the intraoral fixture (1200) and can accommodate at least one tooth within a tooth region located in the direction in which the intraoral fixture (1200) is inserted into the oral cavity.

[0214] For example, the first part (1210) of the intraoral fixture (1200) may be an area formed by connecting all points of the inner surface (500) of the intraoral fixture (1200) and all points of the middle surface (900).

[0215] For example, the electronic device (100) may identify a first material as the material of the first portion (1210) of the oral appliance (1200). Here, the first material may be a transparent material. Additionally, the first material may be a material having flexible physical properties (flexibility). For example, the first material may be a material having a high elongation (e.g., 45-55%). Meanwhile, the physical properties of the first material may be determined by various criteria, such as elongation, and embodiments of the present disclosure may be applied similarly.

[0216] In one embodiment, the electronic device (100) can identify a second portion (1220) of the intraoral fixture (1200) between the middle surface (900) and the outer surface (600).

[0217] For example, the second part (1220) of the intraoral attachment (1200) may be an outer layer of the intraoral attachment (1200) and may form an outline of the intraoral attachment (1200).

[0218] For example, the second portion (1220) of the intraoral fixture (1200) may be an area formed by connecting all points of the middle surface (900) and all points of the outer surface (600) of the intraoral fixture (1200).

[0219] For example, the electronic device (100) may identify a second material as the material of the second portion (1220) of the oral appliance (1200). Here, the second material may be a transparent material. Additionally, the second material may be a material having hard physical properties. For example, the second material may be a material having low elongation (e.g., less than 45-55%). Meanwhile, the physical properties of the second material may be determined by various criteria, such as elongation, and embodiments of the present disclosure may be applied similarly.

[0220] For example, the first material and the second material may have different physical properties. As a specific example, the first material may be more flexible than the second material. That is, the first material may be a material that has more flexible physical properties than the second material, such as high elongation. Alternatively, the first material may be a smooth material with less roughness than the second material. In this way, by applying a material that is softer and more flexible than the second part (1220) to the first part (1210) of the intraoral fixture (1200), the wearing comfort of the intraoral fixture (1200) can be further improved. In addition, by applying a material that is harder than the first part (1210) to the second part (1220) of the intraoral fixture (1200), the shape can be maintained for a long time with high durability even if the wearer of the intraoral fixture (1200) performs bruxism with great force. In this way, by applying different materials to parts of the oral appliance (1200), it is possible to simultaneously obtain the effects of improved wearing comfort and durability compared to applying a single material to the oral appliance (1200).

[0221] As illustrated in FIGS. 12b to 12d, boundary areas (dotted lines) may be set for the inner surface (500), outer surface (600), and middle surface (900) of the oral appliance (1200). For example, the boundary areas may be predetermined by the buccal height, the lingual height, etc. Alternatively, the boundary areas may be set by the user (10). For example, the electronic device (100) may receive input regarding the boundary areas from the user (10) via the input device (109).

[0222] In one embodiment, the thickness of at least one of the first portion (1210) and the second portion (1220) of the intraoral insert (1200) may become thinner as it approaches the gingival region within the boundary region.

[0223] Referring to FIG. 12b, the distance between the vertex of the intermediate surface (900) and the vertex of the outer surface (600) within the boundary region may become shorter as it approaches the contour. That is, the second portion (1220) of the intraoral attachment (1200) may become thinner as it approaches the intraoral gingival region.

[0224] Referring to FIG. 12c, the distance between the vertex of the inner surface (500) within the boundary region and the vertex of the intermediate surface (900) may become shorter as it approaches the contour. That is, the first portion (1210) of the intraoral attachment (1200) may become thinner as it approaches the intraoral gingival region.

[0225] Referring to FIG. 12d, the distance between the vertex of the inner surface (500) and the vertex of the intermediate surface (900) within the boundary region and the distance between the vertex of the intermediate surface (900) and the vertex of the outer surface (600) may become shorter as they approach the contour. That is, both the first portion (1210) and the second portion (1220) of the intraoral fixture (1200) may become thinner as they approach the gingival region.

[0226] In one embodiment, the electronic device (100) may determine which of the first portion (1210) and the second portion (1220) of the intraoral fixture (1200) to thin as it approaches the gingival region within the boundary region. For example, the electronic device (100) may determine which of the first portion (1210) and the second portion (1220) to thin as it approaches the gingival region within the boundary region based on the area of ​​the contact area between the intraoral fixture (1200) and the gingival region within the oral cavity. If the electronic device (100) determines to thin the second portion (1220) as it approaches the gingival region within the boundary region, reference may be made to FIG. 12b. If the electronic device (100) determines to thin the first portion (1210) as it approaches the gingival region within the boundary region, reference may be made to FIG. 12c. If it is determined that the thickness of both the first portion (1210) and the second portion (1220) is made thinner as the electronic device (100) approaches the gum area within the boundary area, reference may be made to FIG. 12d.

[0227] In one embodiment, the thickness of the first portion (1210) and the second portion (1220) of the intraoral fixture (1200) may be determined by the user (10) as the thickness thereof is made thinner as the thickness thereof approaches the gingival region within the boundary region. The electronic device (100) may receive a selection input from the user (10) via the input device (109) for at least one of the first portion (1210) and the second portion (1220) of the intraoral fixture (1200). If the user (10) selects the second portion (1220), reference may be made to FIG. 12b. If the user (10) selects the first portion (1210), reference may be made to FIG. 12c. If the user (10) selects the first portion (1210) and the second portion (1220), reference may be made to FIG. 12d.

[0228] FIG. 13 is a drawing showing an object (20) according to one embodiment of the present disclosure with an oral attachment (1200) attached (1300).

[0229] Referring to FIG. 13, an intraoral attachment (1200) can be mounted on the mandible (302) among the intraoral structures of the subject (20). Meanwhile, this is merely an example for explaining an embodiment of the present disclosure, and the present disclosure is not limited thereto. According to an embodiment of the present disclosure, an intraoral attachment (1200) that can be mounted on the maxilla (301) can be created, and an intraoral attachment (1200) that can be simultaneously mounted on both jaws (301, 302) can also be created.

[0230] Meanwhile, the oral attachment (1200) may also be generated by an external device such as a printer. This will be described in detail with reference to FIG. 14.

[0231] FIG. 14 is a drawing for explaining a method of creating (printing) an oral attachment (1200) according to one embodiment of the present disclosure.

[0232] In one embodiment, the electronic device (100) can transmit data about the oral appliance (1200) to a printing device (1400).

[0233] For example, the printing device (1400) may include a 3D printing device capable of creating (printing) an actual form of an object indicated by the received data. Here, the 3D printing device may include a 3D printing device capable of creating an object with a single material, a 3D printing device capable of creating an object with two or more materials (Multijet method), etc. The printing device (1400) may create (print) an intraoral attachment (1200) based on the received data.

[0234] For example, data for an oral appliance (1200) may include at least one or a combination of the following data:

[0235] - First data on the inner surface (500) of the oral appliance (1200)

[0236] - Second data on the outer surface (600) of the oral appliance (1200)

[0237] - Third data on the middle surface (900) of the oral attachment (1200)

[0238] - Fourth data for the first part (1210) of the oral attachment (1200)

[0239] - Fifth data for the second part (1220) of the oral attachment (1200)

[0240] - 6th data on the overall shape of the oral appliance (1200)

[0241] For example, if data for an intraoral fixture (1200) includes first data for an inner surface (500), second data for an outer surface (600), and third data for an intermediate surface (900), the printing device (1400) can identify a first portion (1210) and a second portion (1220) of the intraoral fixture (1200) based on the received first data, second data, and third data. The printing device (1400) can identify a first material as a first material of the first portion (1210) of the intraoral fixture (1200), and can identify a second material as a second material of the second portion (1220). Thereafter, the printing device (1400) can create (print) the intraoral attachment (1200) by applying a first material composed of a first material to the first part (1210) of the intraoral attachment (1200) and a second material composed of a second material to the second part (1220). Alternatively, the printing device (1400) can create (print) the intraoral attachment (1200) by applying a first material composed of a first material to the first part (1210) of the intraoral attachment (1200) and by applying a second material composed of a second material to the second part (1220). That is, the printing device (1400) can create (print) the first part (1210) and the second part (1220) of the intraoral attachment (1200) separately. In this case, the first part (1210) of the intraoral attachment (1200) may also be utilized as a dental aligner. For example, if the first part (1210) of the intraoral attachment (1200) is formed by applying a material composed of a transparent substance, the first part (1210) of the intraoral attachment (1200) may be utilized as a dental aligner. Alternatively, the first part (1210) and the second part (1220) of the intraoral attachment (1200) that are formed separately may be locked to be utilized as a splint.Meanwhile, when fastening the first part (1210) and the second part (1220) of the oral attachment (1200), the fastening angle, the clearance space, etc. between the first part (1210) and the second part (1220) must be taken into consideration. If the materials applied to the first part (1210) and the second part (1220) are different, even if the first part (1210) and the second part (1220) can be fastened precisely in terms of data, in reality, a crack (gap) may form between the first part (1210) and the second part (1220) due to material characteristics (e.g., particle size, etc.), and the fastening may not be properly performed. In such a case, correction values ​​such as the fastening angle and the clearance space for the fastening of the first part (1210) and the second part (1220) need to be additionally considered. Meanwhile, since the first part (1210) of the intraoral fixture (1200) is formed by the inner surface (500) and the intermediate surface (900) of the intraoral fixture (1200), and the second part (1220) of the intraoral fixture (1200) is formed by the intermediate surface (900) and the outer surface (600) of the intraoral fixture, data including correction values ​​such as the fastening angle of the first part (1210) and the second part (1220) of the intraoral fixture (1200) can be identified in the process of creating the intermediate surface (900) that serves as the boundary surface of the first part (1210) and the second part (1220) of the intraoral fixture (1200). Accordingly, the third data for the intermediate surface (900) of the intraoral fixture (1200) can include data for fastening the first part (1210) and the second part (1220) of the intraoral fixture (1200). The printing device (1400) can additionally correct and separately generate (print) the first part (1210) and the second part (1220) of the intraoral attachment (1200) according to data for fastening the first part (1210) and the second part (1220) of the intraoral attachment (1200).Alternatively, the printing device (1400) may correct the first part (1210) and the second part (1220) of the already created intraoral fixture (1200) based on data for fastening the first part (1210) and the second part (1220) of the already created intraoral fixture (1200). In this way, the operation of correcting the first part (1210) and the second part (1220) of the already created intraoral fixture (1200) may be expressed as a post-processing operation.

[0242] For example, if the data for the intraoral fixture (1200) includes fourth data for the first portion (1210), the printing device (1400) can identify the first portion (1210) of the intraoral fixture (1200) based on the received fourth data, and identify the first material as the first material of the first portion (1210). Here, the fourth data for the first portion (1210) may also include data for the first material of the first portion (1210). Thereafter, the printing device (1400) can apply the first material composed of the first material to the first portion (1210) of the intraoral fixture (1200) to generate (print).

[0243] For example, if the data for the intraoral fixture (1200) includes fifth data for the second portion (1220), the printing device (1400) can identify the second portion (1220) of the intraoral fixture (1200) based on the received fifth data, and identify a second material as the second material of the second portion (1220). Here, the fifth data for the second portion (1220) may also include data for the second material of the second portion (1220). Thereafter, the printing device (1400) can apply the second material composed of the second material to the second portion (1220) of the intraoral fixture (1200) to generate (print).

[0244] For example, if data for an intraoral fixture (1200) includes fourth data for a first portion (1210) and fifth data for a second portion (1220), the printing device (1400) can identify the first portion (1210) and the second portion (1220) of the intraoral fixture (1200) based on the received fourth data and fifth data. The printing device (1400) can identify a first material as a first material of the first portion (1210) and a second material as a second material of the second portion (1220). Thereafter, the printing device (1400) can apply a first material composed of the first material to the first portion (1210) and apply a second material composed of the second material to the second portion (1220), thereby generating (printing) the intraoral fixture (1200). Alternatively, the printing device (1400) may generate (print) a first material composed of a first material by applying it to the first part (1210) of the oral appliance (1200), and generate (print) a second material composed of a second material by applying it to the second part (1220). That is, the printing device (1400) may separately generate (print) the first part (1210) and the second part (1220) of the oral appliance (1200). In this case, the electronic device (100) may transmit data for fastening the first part (1210) and the second part (1220) of the oral appliance (1200) to the printing device (1400). For example, data for fastening the first part (1210) and the second part (1220) of the intraoral fixture (1200) may be included in at least a portion of the fourth data for the first part (1210) and the fifth data for the second part (1220) of the intraoral fixture (1200). The printing device (1400) may additionally correct and separately generate (print) the first part (1210) and the second part (1220) of the intraoral fixture (1200) according to the data for fastening the first part (1210) and the second part (1220) of the intraoral fixture (1200).Alternatively, the printing device (1400) can correct the first part (1210) and the second part (1220) of the already created intraoral attachment (1200) based on the data for fastening the first part (1210) and the second part (1220) of the intraoral attachment (1200).

[0245] As described above, the electronic device (100) may transmit to the printing device (1400) first data for the inner surface (500), second data for the outer surface (600), third data for the middle surface (900), fourth data for the first part (1210), and fifth data for the second part (1220) as intermediate data for creating (printing) the intraoral attachment (1200), but may transmit to the printing device (1400) sixth data for the overall shape of the intraoral attachment (1200) as final data for creating (printing) the intraoral attachment (1200). Here, the sixth data for the overall shape of the intraoral attachment (1200) may be data created based on the first data, the second data, the third data, the fourth data, or the fifth data.

[0246] Although the process steps, method steps, and algorithms illustrated in the flowcharts herein are described in a sequential order, such processes, methods, and algorithms may be configured to operate in any suitable order. In other words, the steps of the processes, methods, and algorithms described in various embodiments of the present disclosure need not be performed in the order described herein. Furthermore, even if some steps are described as being performed asynchronously, in other embodiments, such some steps may be performed concurrently. Furthermore, the illustration of a process by depiction in the drawings does not imply that the illustrated process excludes other variations and modifications thereof, nor does it imply that the illustrated process or any of its steps is essential to one or more of the various embodiments of the present disclosure, nor does it imply that the illustrated process is preferred.

[0247] While the method has been described through specific embodiments, the method can also be implemented as computer-readable code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device that stores data that can be read by a computer system. Examples of computer-readable recording media include ROMs, RAMs, CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, and the like. Furthermore, the computer-readable recording medium can be distributed across network-connected computer systems, such that the computer-readable code can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the above embodiments can be readily inferred by programmers skilled in the art to which the present disclosure pertains.

Claims

1. In a method performed by an electronic device, A step of generating first data on the inner surface of an intraoral appliance based on three-dimensional scan data on the surface of a target object; A step of generating second data on the outer surface of the oral appliance based on the first data; and A method comprising the step of generating third data for the intermediate surface of the intraoral attachment located between the inner surface and the outer surface based on the first data and the second data.

2. In paragraph 1, A step of identifying a first material as a material of a first portion between the inner surface and the middle surface of the oral attachment; and A method further comprising the step of identifying a second material as a material of a second portion between the intermediate surface and the outer surface of the oral attachment.

3. In paragraph 2, The first part of the oral appliance receives one or more teeth in the oral cavity, The second part of the intraoral fixture forms the outline of the intraoral fixture, A method wherein at least one of the first portion or the second portion of the oral appliance becomes thinner as it approaches the oral gingival area.

4. In paragraph 2, A method wherein the third data further includes data on locking of the first part and the second part.

5. In paragraph 2, A method wherein the first material is more flexible than the second material.

6. In paragraph 1, The step of generating the third data for the above intermediate surface is: A step of identifying a first point of the inner surface and a normal vector to the inner surface at the first point; A step of identifying a first offset point spaced apart from the first point by a first offset value in the direction of the normal vector; and A method comprising: identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and a minimum distance between the first offset point and one or more points of the outer surface is greater than a predetermined value.

7. In paragraph 6, The step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value, A method further comprising the step of identifying the second point as being identical to the first offset point in response to the first offset point being located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points on the outer surface being greater than the predetermined value.

8. In paragraph 6, The step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value, In response to the first offset point being located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface being less than or equal to the predetermined value, identifying a second offset point spaced apart from the first offset point by a second offset value in the opposite direction of the normal vector; and A method comprising: identifying a second point of the intermediate surface corresponding to the first point based on whether the minimum distance between the second offset point and the one or more points of the outer surface is greater than the predetermined value, while the second offset point is located between the inner surface and the outer surface.

9. In paragraph 6, The step of identifying a second point of the intermediate surface corresponding to the first point based on whether the first offset point is located between the inner surface and the outer surface and the minimum distance between the first offset point and the one or more points of the outer surface is greater than the predetermined value, In response to the first offset point not being located between the inner surface and the outer surface, identifying a third offset point spaced apart from the first offset point by a third offset value in the opposite direction of the normal vector; and A method comprising: identifying a second point of the intermediate surface corresponding to the first point based on whether the minimum distance between the third offset point and the one or more points of the outer surface is greater than the predetermined value, while the third offset point is located between the inner surface and the outer surface.

10. In paragraph 6, A step of identifying multiple point pairs, each point pair consisting of one point on the inner surface and one point on the outer surface; A step of identifying a pair of points among the plurality of point pairs having the closest distance between the points; and A method further comprising the step of determining the first offset value based on the identified point pair.

11. In paragraph 6, A method further comprising the step of receiving a user input for the first offset value.

12. In paragraph 6, The step of generating the third data for the above intermediate surface is: A step of identifying multiple point pairs, each point pair consisting of one point on the inner surface and one point on the outer surface; A step of identifying a plurality of intermediate points based on the plurality of point pairs, wherein each intermediate point is located between one point of the inner surface and one point of the outer surface constituting each point pair; and A method comprising the step of generating the third data such that the intermediate surface includes the plurality of intermediate points.

13. In paragraph 1, A step of identifying a specific point among one or more points constituting the periphery of the inner surface, which has the shortest distance from a specific point of the periphery of the intermediate surface; A step of identifying a specific point having the shortest distance from a specific point on the periphery of the intermediate surface among one or more points constituting the periphery of the outer surface; and A method comprising a step of modifying the third data so that the intermediate surface includes a specific point on a straight line connecting a specific point on the periphery of the inner surface and a specific point on the periphery of the outer surface.

14. In paragraph 13, The step of modifying the above third data is: A step of identifying a point located on a straight line connecting a specific point of the inner periphery and a specific point of the outer surface, and spaced apart from the specific point of the inner periphery by a fourth offset value; and A method comprising the step of modifying the third data so that the intermediate surface includes the identified point.

15. In paragraph 1, A step of receiving a user input for moving a specific point of the above intermediate surface; A step of identifying a point located on a straight line connecting a specific point of the inner periphery and a specific point of the outer periphery based on the user's input and spaced apart from a specific point of the inner periphery; and A method further comprising the step of modifying the third data so that the intermediate surface includes the identified point.

16. In electronic devices, One or more processors, comprising one or more memories storing instructions executed by the one or more processors; An electronic device, wherein when the instructions are executed by the one or more processors, the one or more processors are configured to execute a method according to any one of claims 1 to 15.

17. In a non-transitory computer-readable recording medium, instructions are recorded that cause one or more processors to perform an operation when executed by one or more processors. A non-transitory computer-readable recording medium, wherein the instructions are configured to cause the one or more processors to execute a method according to any one of claims 1 to 15.

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