Method, apparatus, and recording medium for generating intraoral appliance

Abstract

A technique for generating an intraoral appliance is disclosed. A method performed by an electronic device according to an aspect of the present disclosure may include the steps of: identifying one or more target teeth on the basis of at least one image of an oral cavity; generating first data for a first shape for an intraoral appliance for the one or more target teeth, on the basis of the at least one image; generating second data for a second shape for the intraoral appliance, on the basis of the first data and data for one or more opposing teeth corresponding to the one or more target teeth; and generating third data for the intraoral appliance in which the first shape and the second shape are combined, on the basis of the first data and the second data.

Description

Recording medium recording method, device and command for producing an oral appliance

[0001] The present disclosure relates to a technique for producing an intraoral implant.

[0002] A 3D intraoral scanner is an optical device that is inserted into a patient's oral cavity and scans the teeth to obtain a 3D image of the oral cavity. By scanning the patient's oral cavity using a 3D scanner, multiple 2D images of the patient's oral cavity can be obtained, and a 3D image of the patient's oral cavity can be constructed using the acquired multiple 2D images. For example, a doctor can insert a 3D scanner into a patient's oral cavity and scan the patient's teeth, gingiva, and / or soft tissues, thereby obtaining multiple 2D images of the patient's oral cavity. Then, by applying 3D modeling technology, the 2D images of the patient's oral cavity can be used to construct a 3D image of the patient's oral cavity.

[0003] The constructed 3D images can be used to manufacture various intraoral appliances that are inserted and placed into the oral cavity to treat temporomandibular joint disorders, dental trauma, caries, and gum disease. For example, patients with an improperly aligned oral structure may easily experience temporomandibular joint fatigue and even temporomandibular joint disorders. Furthermore, an oral structure with uneven teeth or protruding gums can cause bimaxillary prognathism. Thus, appliances 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, appliances 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 cause tooth damage. Thus, appliances can be designed to protect the teeth of such patients, preventing the discomfort or disorders caused by their oral habits. In this way, intraoral appliances that can be placed inside a patient's mouth for various purposes, such as tooth fixation, orthodontics, and tooth protection, may include splints. However, technologies for creating intraoral appliances that are applied to only a portion of a patient's teeth, such as the Nociceptive Trigeminal Inhibition Splint (NTI Splint) or the Anterior Bite Splint, have not been sufficiently developed.

[0004] A technical problem to be solved by at least one embodiment of the present disclosure is to provide a technique for automatically generating an intraoral appliance that is applied to only some of a patient's teeth.

[0005] A technical problem to be solved by at least one embodiment of the present disclosure is to provide a technique for determining the outline of an intraoral attachment based on the shape of a target tooth.

[0006] A technical problem to be solved by at least one embodiment of the present disclosure is to provide a technology for connecting the inner and outer surfaces of an oral appliance.

[0007] A technical problem to be solved by at least one embodiment of the present disclosure is to provide a technique for determining the size of an additional part of an intraoral implant.

[0008] A technical problem to be solved by at least one embodiment of the present disclosure is to provide a technique for determining the position of an additional part of an intraoral implant.

[0009] As one aspect of the present disclosure, a method performed by an electronic device may be proposed. According to one aspect of the present disclosure, the method may include: identifying one or more target teeth based on at least one image of an oral cavity; generating, based on the at least one image, first data for a first shape for an intraoral appliance for the one or more target teeth; generating, based on data for one or more antagonist teeth corresponding to the one or more target teeth and the first data, second data for a second shape for the intraoral appliance; and generating, based on the first data and the second data, third data for the intraoral appliance, the first shape and the second shape being combined.

[0010] In one embodiment, the step of generating the first data may include: generating data for an inner surface of the first shape based on a shape of the one or more target teeth; generating data for an outline of the first shape based on one or more outline points and one or more connection points of the one or more target teeth; and generating data for an outer surface of the first shape based on the data for the inner surface and the data for the outline.

[0011] In one embodiment, the step of generating the first data may include: determining a first contour point for a first target tooth among the one or more target teeth in a first manner based on the at least one image; and determining a second contour point for a second target tooth among the one or more target teeth in a second manner different from the first manner.

[0012] In one embodiment, the one or more target teeth may be four anterior teeth, the first target tooth may be one of the inner teeth among the four anterior teeth, and the second target tooth may be one of the outer teeth among the four anterior teeth.

[0013] In one embodiment, the step of determining the first contour point in the first manner may include the step of setting the x-coordinate value of the first contour point to the x-coordinate value of the center of a bounding box for the first target tooth; and the step of setting the y-coordinate value of the first contour point to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity.

[0014] In one embodiment, the step of determining the second contour point in the second manner may include the step of determining the second contour point based on the intersection of a straight line connecting the center of the oral cavity and the center of the bounding box for the second target tooth and the surface of the outer tooth.

[0015] In one embodiment, the step of determining the second contour point in the second manner comprises: determining a first point that is spaced apart from the center of the oral cavity by a value obtained by adding a predetermined value to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity in the y-axis direction; determining a second point that is spaced apart from a point existing within a bounding box for the second target tooth by a value obtained by adding a predetermined value to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity in the y-axis direction; determining a first intersection point of a straight line connecting the first point and the second point and a surface of the second target tooth; determining a third point that is spaced apart from the second point by a predetermined length in the x-axis direction based on the second point;

[0016] The method may include a step of determining a second intersection point of a straight line connecting the first point and the third point and the surface of the second target tooth; and a step of setting the second contour point to a point that is further from the first point among the first intersection point and the second intersection point.

[0017] In one embodiment, the predetermined value may represent a movement in the direction from the root of the second target tooth toward the crown.

[0018] In one embodiment, the step of generating the first data may include the step of determining a reference point that is spaced apart from the center of the oral cavity by a predetermined distance based on the center of the bounding box for the second target tooth; and the step of determining a point on the surface of the second target tooth that is closest to the reference point as a connection point.

[0019] In one embodiment, the step of generating the second data may include: determining a width indicating an x-axis direction length of the second shape; determining a height indicating a y-axis direction length of the second shape; and determining a depth indicating a z-axis direction length of the second shape.

[0020] In one embodiment, the step of determining the width of the second shape may include the step of determining the width of the second shape based on an x-axis direction length of the one or more target teeth.

[0021] In one embodiment, the step of determining the height of the second shape may include the step of determining a length by which the second shape is to protrude from the first shape in a direction toward the one or more opposing teeth; and the step of determining the height of the second shape based on the protruding length.

[0022] In one embodiment, the step of determining the depth of the second shape may include: determining a first depth range of a portion within a predetermined height from the highest point among the portions of the outer surface of the first shape to which the second shape is to be combined; determining a second depth range of a portion within a predetermined height from the highest point among the portions of the surfaces of the one or more antagonistic teeth that will come into contact with the second shape when the oral fixture is mounted in the oral cavity; and determining the depth of the second shape based on the first depth range and the second depth range.

[0023] In one embodiment, the step of determining the depth of the second shape may include the step of determining the depth of the second shape by adding a predetermined offset after merging the first depth range and the second depth range.

[0024] In one embodiment, the step of generating the third data may include a step of generating the third data such that, when the one or more target teeth are maxillary teeth, the center of the second shape is positioned closer to the lingual side with respect to the one or more target teeth when the intraoral fixture is mounted in the oral cavity.

[0025] In one embodiment, the step of generating the third data may include, when the one or more target teeth are mandibular teeth, generating the third data such that the center of the second shape is closer to the labial side with respect to the one or more target teeth when the intraoral fixture is mounted in the oral cavity.

[0026] In one embodiment, the intraoral attachment may be an NTI splint.

[0027] As one aspect of the present disclosure, an electronic device may be proposed. According to one aspect of the present disclosure, the electronic device may include 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 may be configured to execute a method according to the present disclosure.

[0028] As one aspect of the present disclosure, a non-transitory computer-readable recording medium may be proposed. According to one aspect of the present disclosure, a non-transitory computer-readable recording medium may record instructions that, when executed by one or more processors, cause the one or more processors to perform operations, and the instructions may be configured to cause the one or more processors to execute a method according to the present disclosure.

[0029] According to various embodiments of the present disclosure, an intraoral appliance that simultaneously considers both comfort and aesthetics can be automatically created, and multiple user operations and corresponding calculations for creating and adjusting the intraoral appliance can be eliminated, thereby saving computational resources.

[0030] The effects according to the technical idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the specification.

[0031] FIG. 1 is a drawing illustrating an example of obtaining an image of a patient's oral cavity using an oral scanner according to one embodiment of the present disclosure.

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

[0033] FIG. 3 is a diagram illustrating a method for generating a three-dimensional image (320) of an oral cavity according to one embodiment of the present disclosure.

[0034] FIG. 4 is a diagram illustrating a method for generating data for an intraoral appliance based on an image of the oral cavity according to one embodiment of the present disclosure.

[0035] FIG. 5 is a diagram illustrating a method for generating first data based on a three-dimensional image of an oral cavity according to one embodiment of the present disclosure.

[0036] FIG. 6 is a drawing for explaining a method for determining the x-coordinate of a second contour point in a second target tooth according to one embodiment of the present disclosure.

[0037] FIG. 7 is a diagram illustrating a method for determining a connection point according to one embodiment of the present disclosure.

[0038] FIG. 8 illustrates a second shape combined with a first shape according to one embodiment of the present disclosure.

[0039] FIG. 9 illustrates a combined form of a first shape and a second shape according to one embodiment of the present disclosure.

[0040] FIG. 10 is a drawing for explaining a method for determining the depth of a second shape according to one embodiment of the present disclosure.

[0041] FIG. 11 illustrates an oral appliance created based on third data according to one embodiment of the present disclosure being installed in the oral cavity.

[0042] FIG. 12 illustrates an oral appliance created based on the maxilla according to one embodiment of the present disclosure being installed in the oral cavity.

[0043] FIG. 13 illustrates an oral appliance created based on the lower jaw according to one embodiment of the present disclosure being installed in the oral cavity.

[0044] FIG. 14 is a flowchart of a method for creating an intraoral implant according to one embodiment of the present disclosure.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] The expressions "first," "second," or "first", "second", etc. used in this document, unless the context indicates otherwise, are used to refer to multiple similar objects and to distinguish one object from another, and do not limit the order or importance among the objects.

[0050] 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", etc., may refer to each of the listed items or to all possible combinations of the listed items. For example, "at least one of A or B" may refer to (1) at least one A, (2) at least one B, (3) at least one A and at least one B.

[0051] The term "component" as used herein may refer to software or hardware components such as field-programmable gate arrays (FPGAs) and application specific integrated circuits (ASICs). However, the "component" is not limited to hardware and software. The "component" may be configured to be stored on an addressable storage medium, and may be configured to execute one or more processors. In one embodiment, the "component" may include components such as software components, object-oriented software components, class components, and task components, as well as processors, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables.

[0052] The expression "based on" 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.

[0053] 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).

[0054] The expression "configured to" as used in this document can mean "set to do", "having the ability to do", "modified to do", "made to do", "capable of doing", etc., 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 generic-purpose processor that can perform the specific operation by executing software.

[0055] Hereinafter, various embodiments of the present disclosure will be described with reference to the attached drawings. In the attached drawings and the description of the drawings, identical or substantially equivalent components may be assigned the same reference numerals. Furthermore, in the description of various embodiments below, duplicate descriptions of identical or corresponding components may be omitted, but this does not mean that the corresponding components are not included in the embodiments.

[0056] FIG. 1 is a drawing illustrating a method of obtaining an image of a patient's oral cavity using a three-dimensional scanner (200) according to one embodiment of the present disclosure. According to one embodiment, the three-dimensional scanner (200) may be a dental medical device for obtaining an image of the oral cavity of a subject (20). For example, the three-dimensional scanner (200) may be an intraoral scanner. As illustrated in FIG. 1, a user (10) (e.g., a dentist or a dental hygienist) may obtain an image of the oral cavity of a subject (20) (e.g., a patient) from the subject (20) using the three-dimensional scanner (200). As another example, the user (10) may obtain an image of the oral cavity of the subject (20) from a diagnostic model (e.g., a plaster model or an impression model) modeled after the shape of the oral cavity of the subject (20). Hereinafter, for convenience of explanation, the oral cavity of the subject (20) is scanned to obtain an image of the oral cavity of the subject (20), but the present invention is not limited thereto, and it is also possible to obtain an image of another part of the subject (20) (e.g., the ear of the subject (20)). The 3D scanner (200) may have a form that can be inserted and extracted into the oral cavity, and may be a handheld scanner in which the user (10) can freely adjust the scanning distance and scanning angle.

[0057] According to one embodiment, a three-dimensional scanner (200) can be inserted into the oral cavity of a subject (20) and scan the inside of the oral cavity in a non-contact manner to obtain an image of the oral cavity. The image of the oral cavity may include at least one tooth and gums. The three-dimensional scanner (200) can irradiate light onto the oral cavity of the subject (20) (e.g., at least one tooth and gums of the subject (20)) using a light source (or projector), and can receive light reflected from the oral cavity of the subject (20) through a camera (or at least one image sensor). According to another embodiment, the three-dimensional scanner (200) can also obtain an image of a diagnostic model of the oral cavity by scanning the diagnostic model of the oral cavity. If the diagnostic model of the oral cavity is a diagnostic model modeled after the shape of the oral cavity of the subject (20), the image of the diagnostic model of the oral cavity may be an image of the oral cavity of the subject. In the following, for convenience of explanation, it is assumed that an image of the oral cavity is obtained by scanning the inside of the oral cavity of the subject (20), but the present invention is not limited thereto.

[0058] According to one embodiment, a three-dimensional scanner (200) can acquire a surface image of the oral cavity of a subject (20) as a two-dimensional image based on information received through a camera. The surface image of the oral cavity of the subject (20) can include at least one tooth, gums, an artificial structure, a cheek, a tongue, or lips of the subject (20). The surface image of the oral cavity of the subject (20) can be a two-dimensional image.

[0059] According to one embodiment, a two-dimensional image of the oral cavity acquired from a three-dimensional scanner (200) may be transmitted to an electronic device (100) connected via a wired or wireless communication network. The electronic device (100) may be a computer device or a portable communication device. The electronic device (100) may generate a three-dimensional image of the oral cavity (or may also be referred to as a three-dimensional oral cavity image, a three-dimensional oral cavity model, a three-dimensional scan model, a tooth model, a three-dimensional oral cavity representation, a three-dimensional numerical entity, etc.) that represents the oral cavity three-dimensionally based on the two-dimensional image of the oral cavity received from the three-dimensional scanner (200). The electronic device (100) may generate a three-dimensional image of the oral cavity by three-dimensionally modeling the internal structure of the oral cavity based on the two-dimensional image of the oral cavity received.

[0060] A 3D image can contain not only geometric information of an object within its 3D space, but also information such as color, texture, and material. The format of a 3D image can be, for example, one of the following: STL (Standard Triangle Language), OBJ, or polygon file format, but is not limited to these examples. "Polygon" can refer to a polygon, the smallest unit used to express the three-dimensional shape of a 3D oral model. For example, the surface of a 3D image can be expressed as triangular polygons. For example, a polygon can be composed of at least three vertices and one face. A 3D image can contain information such as the position, color, and normal in 3D space for each vertex. A mesh is made up of multiple polygons and can represent the geometry of an object in 3D space. As the number of polygons representing a 3D image increases, the object can be expressed in greater detail.

[0061] According to another embodiment, a 3D scanner (200) scans the oral cavity of a subject (20) to obtain a 2D image of the oral cavity, generates a 3D image of the oral cavity based on the obtained 2D image of the oral cavity, and may transmit the generated 3D image of the oral cavity to an electronic device (100).

[0062] An electronic device (100) according to one embodiment may be connected to a cloud server (not shown). In the above case, the electronic device (100) may transmit a two-dimensional image of the oral cavity of the subject (20) or a three-dimensional image of the oral cavity to the cloud server, and the cloud server may store the two-dimensional image of the oral cavity of the subject (20) or the three-dimensional image of the oral cavity received from the electronic device (100).

[0063] According to another embodiment, in addition to a handheld scanner that is inserted into the oral cavity of a subject (20) and used, a table scanner (not shown) that is fixed and used at a specific location may be used as a 3D scanner. The table scanner can create a 3D image of the oral cavity diagnostic model by scanning the oral cavity diagnostic model. In the above case, since the light source (or projector) and the camera of the table scanner are fixed, the user can scan the oral cavity diagnostic model by moving the arm that fixes the oral cavity diagnostic model. Compared to a handheld scanner, a table scanner is relatively less likely to cause noise by interfering with another object between the camera and the diagnostic model during the scanning operation. However, embodiments of the present disclosure are applicable not only to a handheld scanner but also to a table scanner and other 3D scanners.

[0064] FIG. 2A is a block diagram of an electronic device (100) and a 3D scanner (200) according to one embodiment of the present disclosure. The electronic device (100) and the 3D scanner (200) can be connected to each other via a wired or wireless communication network and can transmit and receive various data.

[0065] According to one embodiment, a 3D scanner (200) may include a processor (201), a memory (202), a communication circuit (203), a light source (204), a camera (205), an input device (206), and / or a sensor module (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), and may exchange data and / or signals.

[0066] According to one embodiment, a processor (201) of a 3D scanner (200) is a configuration capable of performing calculations or data processing related to control and / 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 a memory (202), process commands or data stored in the memory (202), and store result data. The memory (202) of the 3D scanner (200) according to one embodiment may store instructions for the operation of the processor (201) described above.

[0067] According to one embodiment, the communication circuit (203) of the 3D scanner (200) can establish a wired or wireless communication channel with an external device (e.g., an electronic device (100)) and transmit and receive various data with the external device. According to one embodiment, the communication circuit (203) can include at least one port for connecting to the external device via a wired cable in order to communicate with the external device via a wire. In the above case, the communication circuit (203) can communicate with the external device connected via a wire through the at least one port. According to one embodiment, the communication circuit (203) can be configured to include a cellular communication module and be connected to a cellular network (e.g., 3G, LTE, 5G, Wibro, or Wimax). According to one embodiment, the communication circuit (203) can include a short-range communication module and transmit and receive data with the external device using short-range communication (e.g., Wi-Fi, Bluetooth, Bluetooth Low Energy (BLE), UWB), but is not limited thereto. According to one embodiment, the communication circuit (203) may include a contactless communication module for contactless communication. The contactless communication may include at least one contactless proximity communication technology, such as, for example, near field communication (NFC), radio frequency identification (RFID), or magnetic secure transmission (MST).

[0068] According to one embodiment, the light source (204) of the 3D scanner (200) can irradiate light toward the oral cavity of the subject (20). For example, the light irradiated from the light source (204) can be structured light having a predetermined pattern (e.g., a stripe pattern in which straight lines of different colors appear continuously). The pattern of the structured light can be generated, for example, using a pattern mask or a digital micro-mirror device (DMD), but is not limited thereto. The camera (205) of the 3D scanner (200) according to one embodiment can obtain an image of the oral cavity of the subject (20) by receiving reflected light reflected by the oral cavity of the subject (20). The camera (205) can include, for example, 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 a 3D image according to an optical triangulation method. The camera (205) may include at least one image sensor, such as a CCD sensor or a CMOS sensor.

[0069] An input device (206) of a 3D scanner (200) according to one embodiment can receive user input for controlling the 3D scanner (200). The input device (206) can include a button for receiving a push operation from a user (10), a touch panel for detecting a touch from a user (10), and a voice recognition device including a microphone. For example, the user (10) can control the start or stop of scanning using the input device (206).

[0070] According to one embodiment, the sensor module (207) of the 3D scanner (200) can detect the operating state of the 3D scanner (200) or the external environmental state (e.g., the user's movement) and generate an electrical signal corresponding to the detected state. The sensor module (207) can include, for example, at least one of a gyro sensor, an acceleration sensor, a gesture sensor, a proximity sensor, or an infrared sensor. The user (10) can control the start or stop of scanning using the sensor module (207). For example, when the user (10) holds the 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 by the sensor module (207) exceeds a preset threshold value.

[0071] According to one embodiment, the three-dimensional scanner (200) may receive a user input for starting a scan through an input device (206) of the three-dimensional scanner (200) or an input device (109) of the electronic device (100), or may start a scan according to processing in a processor (201) of the three-dimensional scanner (200) or a processor (101) of the electronic device (100). When a user (10) scans the inside of an oral cavity of a subject (20) through the three-dimensional scanner (200), the three-dimensional scanner (200) may generate a two-dimensional image of the oral cavity of the subject (20) and transmit the two-dimensional image of the oral cavity of the subject (20) to the electronic device (100) in real time. The electronic device (100) may display the received two-dimensional image of the oral cavity of the subject (20) through a display (107). In addition, the electronic device (100) can generate (build) a three-dimensional image of the oral cavity of the object (20) based on a two-dimensional image of the oral cavity of the object (20), and can display the three-dimensional image of the oral cavity through a display (107). The electronic device (100) can also display the three-dimensional image being generated in real time through the display (107).

[0072] An electronic device (100) according to one embodiment may include one or more processors (101), one or more memories (103), a communication circuit (105), a display (107), and / 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, a general purpose input / output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI), and may exchange data and / or signals.

[0073] According to one embodiment, one or more processors (101) of the electronic device (100) may be configured to perform operations or data processing related to control and / or communication of each component (e.g., memory (103)) of the electronic device (100). The one or more processors (101) may be operatively connected to, for example, 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.

[0074] According to one embodiment, one or more memories (103) of the electronic device (100) can store instructions for the operation of one or more processors (101). One or more memories (103) can store data received from a three-dimensional scanner (200) (e.g., a two-dimensional image of the oral cavity obtained through an oral scan).

[0075] According to one embodiment, the communication circuit (105) of the electronic device (100) can establish a wired or wireless communication channel with an external device (e.g., a 3D scanner (200), a cloud server) and transmit and receive various data with the external device. According to one embodiment, the communication circuit (105) can include at least one port for connecting to the external device via a wired cable in order to communicate with the external device via a wire. In the above case, the communication circuit (105) can perform communication with the external device connected via a wire through the at least one port. According to one embodiment, the communication circuit (105) can be configured to include a cellular communication module and be connected to a cellular network (e.g., 3G, LTE, 5G, Wibro, or Wimax). According to one embodiment, the communication circuit (105) can include a short-range communication module and transmit and receive data with the external device using short-range communication (e.g., Wi-Fi, Bluetooth, Bluetooth Low Energy (BLE), UWB), but is not limited thereto. According to one embodiment, the communication circuit (105) may include a contactless communication module for contactless communication. The contactless communication may include at least one contactless proximity communication technology, such as, for example, near field communication (NFC), radio frequency identification (RFID), or magnetic secure transmission (MST).

[0076] According to one embodiment, the display (107) of the electronic device (100) can display various screens based on the control of the processor (101). The processor (101) can display a two-dimensional image of the oral cavity of the object (20) received from the three-dimensional scanner (200) and / or a three-dimensional image of the oral cavity that is a three-dimensional model of the internal structure of the oral cavity through the display (107). For example, the two-dimensional image and / or the three-dimensional image of the oral cavity can be displayed through a specific application program. In the above case, the user (10) can edit, save, and delete the two-dimensional image and / or the three-dimensional image of the oral cavity.

[0077] An input device (109) of an electronic device (100) according to one embodiment can receive commands or data to be used in components of the electronic device (100) (e.g., one or more processors (101)) from an external source (e.g., a user) of the electronic device (100). The input device (109) may include, for example, a microphone, a mouse, or a keyboard. According to one embodiment, the input device (109) may be implemented in the form of a touch sensor panel that is coupled with a display (107) and can recognize contact or proximity of various external objects.

[0078] FIG. 2B is a perspective view of a 3D scanner (200) according to one embodiment of the present disclosure. The 3D scanner (200) according to one embodiment may include a main body (210) and a probe tip (220). The main body (210) of the 3D scanner (200) may be formed in a shape that is easy for a user (10) to grip by hand and use. The probe tip (220) may be formed in a shape that is easy to insert into and withdraw from the oral cavity of the subject (20). In addition, the main body (210) may be coupled to and separated from the probe tip (220). Components of the 3D scanner (200) described in FIG. 2A may be arranged inside the main body (210). An opening may be formed at one end of the main body (210) so that light output from a light source (204) may be irradiated to the subject (20). Light irradiated through the opening may be reflected by the object (20) and then re-entered through the opening. The reflected light entering through the opening may be captured by the camera (205) to generate an image of the object (20). The user (10) may initiate scanning using an input device (206) (e.g., a button) of the 3D scanner (200). For example, when the user (10) touches or presses the input device (206), light from the light source (204) may be irradiated to the object (20).

[0079] FIG. 3 is a diagram illustrating a method for generating a three-dimensional image (320) of an oral cavity according to one embodiment of the present disclosure. A user (10) can scan the inside of an oral cavity of a subject (20) by moving a three-dimensional scanner (200), and in this case, the three-dimensional scanner (200) can obtain a plurality of two-dimensional images (310) of the oral cavity of the subject (20). For example, the three-dimensional scanner (200) can obtain a two-dimensional image of an area including the front teeth of the subject (20), a two-dimensional image of an area including the molars of the subject (20), etc. The three-dimensional scanner (200) can transmit the obtained multiple two-dimensional images (310) to an electronic device (100). According to another embodiment, the user (10) can scan a diagnostic model of an oral cavity and obtain a plurality of two-dimensional images of the diagnostic model of the oral cavity by moving the three-dimensional scanner (200). In the following, for convenience of explanation, it is assumed that an image of the oral cavity of the subject (20) is obtained by scanning the inside of the oral cavity of the subject (20), but the present invention is not limited thereto.

[0080] An electronic device (100) according to one embodiment can convert each of a plurality of two-dimensional images (310) of the oral cavity of a subject (20) into a set of a plurality of points having three-dimensional coordinate values. For example, the electronic device (100) can convert each of a plurality of two-dimensional images (310) into a point cloud, which is a set of data points having three-dimensional coordinate values. For example, a set of point clouds, which are three-dimensional coordinate values ​​based on a plurality of two-dimensional images (310), can be stored as raw data for the oral cavity of the subject (20). The electronic device (100) can complete a full tooth model by aligning the point cloud, which is a set of data points having three-dimensional coordinate values.

[0081] An electronic device (100) according to one embodiment can reconstruct (rebuild) a three-dimensional image of the oral cavity. For example, the electronic device (100) can reconstruct a plurality of points by merging a set of point clouds stored as raw data using a Poisson algorithm, and converting them into a closed three-dimensional surface to reconstruct a three-dimensional image (320) of the oral cavity of an object (20).

[0082] FIG. 4 is a diagram illustrating a method for generating data for an intraoral appliance based on an image of the oral cavity according to one embodiment of the present disclosure.

[0083] An electronic device (100) according to one embodiment of the present disclosure can load an image of an oral cavity (S400). In one embodiment, the electronic device (100) can load an image of an oral cavity (320) generated based on an image received from a three-dimensional scanner (200) via a communication circuit (105). The electronic device (100) can process the received image or load an image of an oral cavity (320) pre-stored in a processor (101) or memory (103), and display the image through a display (107).

[0084] An electronic device (100) according to one embodiment of the present disclosure can analyze and align the shape of a received image (320) of an oral cavity (S410). In one embodiment, the electronic device (100) can automatically set an occlusal plane for the image (320) of an oral cavity, align the image (320) of an oral cavity according to the occlusal plane, and display the image (320) of an oral cavity through a display (107). Alternatively or additionally, the electronic device (100) can set an occlusal plane for the image (320) of an oral cavity based on an input for the image (320) of an oral cavity (e.g., an input designating a reference point), and align the image (320) of an oral cavity according to the set occlusal plane.

[0085] An electronic device (100) according to one embodiment of the present disclosure may set the inner surface of an intraoral fixture for an image (320) of an aligned oral cavity (S420). Here, the intraoral fixture may refer to a structure inserted and placed in the oral cavity to treat temporomandibular joint disorder, dental trauma, tooth decay, gum disease, etc., and may include a splint, a crown, an inlay, an onlay, a coping, a pontic, a veneer, etc., but the technical idea of ​​the present invention is not limited to the above examples. Here, the intraoral fixture may be a fixture (device) that is designed for various purposes such as fixing a patient's teeth, orthodontic treatment, and tooth protection, and can be installed inside the oral cavity of the patient. For example, the intraoral fixture may be referred to as a tooth fixing device for fixing a patient's teeth, an orthodontic device for orthodontic treatment, a tooth protection device for protecting a patient's teeth, etc. For example, the intraoral fixture may include a splint. Meanwhile, the present disclosure is not limited thereto, and the term "oral attachment" encompasses various types of devices that can be installed inside the oral cavity, and even if referred to by a term having the same or similar meaning, embodiments of the present disclosure may be applied to such devices.

[0086] An electronic device (100) according to one embodiment of the present disclosure can set the inner surface of an intraoral fixture. In one embodiment, the electronic device (100) can set the inner surface of the intraoral fixture based on an inner surface offset distance, surface smoothness, etc. input from an input device (109) or preset. Here, the inner surface offset distance may refer to a normal distance between an image (320) of the oral cavity and the inner surface of the intraoral fixture, and the surface smoothness may refer to the roughness of the inner surface of the intraoral fixture.

[0087] An electronic device (100) according to one embodiment of the present disclosure may designate an outline of an intraoral fixture based on an image (320) of the oral cavity (S430). In one embodiment, the electronic device (100) may designate an outline of an intraoral fixture based on a buccal height, a lingual height, etc. input from an input device (109) or preset. As an example for ease of understanding, the buccal height of an intraoral fixture may be the height of the outer wall of a tooth facing the cheek based on the lower surface of the tooth region. As a more specific example, the buccal height may be the height formed along the outer wall of a tooth based on the bottom surface of the maxillary tooth region. In this case, the higher the buccal height, the closer the buccal contour formed is to the gingiva. As another example for ease of understanding, the lingual height may be the height of the inner wall of a tooth facing the tongue based on the lower surface of the tooth region. As a more specific example, the lingual height may be the height formed along the inner wall of a tooth based on the bottom surface of the maxillary tooth region. At this time, the higher the lingual height, the closer the formed lingual contour becomes to the gingiva. A method for defining the contour of an intraoral attachment according to various embodiments of the present disclosure is described in detail with reference to FIGS. 5 to 7.

[0088] An electronic device (100) according to one embodiment of the present disclosure can set the outer surface of an intraoral fixture based on an image (320) of the oral cavity (S440). The electronic device (100) can set the outer surface of the intraoral fixture based on a thickness, surface smoothness, etc. input from an input device (109) or preset. In this case, the thickness may be the maximum thickness that the intraoral fixture extends in the occlusal direction (e.g., the thickness from the inner surface of the intraoral fixture in the buccal / lingual direction). The surface smoothness may refer to the roughness of the outer surface of the intraoral fixture.

[0089] An electronic device (100) according to one embodiment of the present disclosure can set an additional part of an intraoral device (S450). A method for setting an additional part of an intraoral device according to various embodiments of the present disclosure is described in detail with reference to FIGS. 8 to 10 .

[0090] An electronic device (100) according to one embodiment of the present disclosure can generate data regarding an intraoral implant based on the inner and outer surfaces and additional parts of the intraoral implant determined through the above process. The generated data regarding the intraoral implant can be transmitted to an external device via a communication circuit (105) and output as an intraoral implant. In this case, the external device may be a 3D printer, but is not limited to this example.

[0091] An electronic device (100) according to one embodiment of the present disclosure may utilize a neural network model to perform at least some of the above steps. For example, the electronic device (100) may utilize a neural network model learned based on data on a plurality of three-dimensional images of oral cavity and data on a plurality of intraoral appliances corresponding thereto, to perform an inference operation related to data on an intraoral appliance suitable for a loaded image (320) of the oral cavity.

[0092] An electronic device (100) according to one embodiment of the present disclosure may receive an input regarding an occlusion state or a minimum distance between arches (Distance to Antagonist) between an upper jaw image and a lower jaw image in an image (320) of an oral cavity, and may adjust the occlusion state or the minimum distance between arches in each step of steps S420 to S450 based on such input. During this adjustment operation, the electronic device (100) may perform a calculation operation on the image (320) of an oral cavity, and display the occlusion state or the minimum distance between arches, etc. together.

[0093] FIG. 5 is a diagram illustrating a method for generating first data based on a three-dimensional image of an oral cavity according to one embodiment of the present disclosure.

[0094] In order to explain various embodiments of the present disclosure, an orthogonal coordinate system having an x-axis, a y-axis, and a z-axis that are orthogonal to each other may be defined. As used in this document, expressions such as "x-axis direction", "y-axis direction", and "z-axis direction" of the orthogonal coordinate system may mean both directions in which each axis of the orthogonal coordinate system extends, unless specifically defined otherwise in the description. In addition, a + sign in front of each axis direction may mean a positive direction, which is one of the two directions extending in the corresponding axis direction, and a - sign in front of each axis direction may mean a negative direction, which is the other of the two directions extending in the corresponding axis direction. For example, in a three-dimensional image of the oral cavity (500) of FIG. 5, the x-axis direction may mean a horizontal direction, the y-axis direction may mean a vertical direction, and the z-axis direction may mean a direction exiting or entering the screen. In addition, "x coordinate", "y coordinate", and "z coordinate" indicate the position in the x-axis direction, the position in the y-axis direction, and the position in the z-axis direction, respectively, and "width", "height", and "depth" can indicate the length in the x-axis direction, the length in the y-axis direction, and the length in the z-axis direction of the object, respectively. In addition, "height" can be measured in the direction from the root of each tooth toward the crown. In other words, the directions in which "height" is measured in the maxilla and mandible can be opposite to each other.

[0095] An electronic device (100) according to one embodiment of the present disclosure may set target teeth. The target teeth may refer to one or more teeth on which an oral appliance is installed and which serve as a reference for creating the inner surface of the oral appliance. According to one embodiment, the target teeth may be one or more adjacent teeth located in one of the upper and lower jaws. For example, the target teeth may refer to four adjacent anterior teeth, but the target teeth are not limited thereto. For example, the target teeth may be a set of non-adjacent teeth. According to one embodiment, the target teeth may include a first target tooth, which is an inner tooth among adjacent teeth, and a second target tooth, which is an outer tooth among target teeth. For example, if the target teeth are four anterior teeth, the first target teeth may refer to the two teeth in the middle, and the second target teeth may refer to the two teeth located at the right and left ends. Hereinafter, for convenience of explanation, the four target teeth illustrated in Fig. 5 will be referred to as the first tooth, the second tooth, the third tooth, and the fourth tooth from the left. According to one embodiment, the second tooth and the third tooth may be the first target teeth, and the first tooth and the fourth tooth may be the second target teeth.

[0096] An electronic device (100) according to one embodiment of the present disclosure can generate bounding boxes (510, 520, 530, 540) for each tooth. The bounding box is a rectangular parallelepiped region indicating the boundary of a three-dimensional region defined within the oral cavity (500), but in FIG. 5, it is illustrated as a two-dimensional rectangle for convenience. For example, the electronic device (100) can generate a first bounding box (510) for a first tooth, a second bounding box (520) for a second tooth adjacent to the first tooth, a third bounding box (530) for a third tooth adjacent to the second tooth, and a fourth bounding box (540) for a fourth tooth adjacent to the third tooth. For example, the electronic device (100) can also generate a bounding box for the entire oral cavity, which includes the entire oral cavity. The first to fourth bounding boxes (510, 520, 530, 540) can indicate the boundaries of the three-dimensional area occupied by the first to fourth teeth within the oral cavity (500).

[0097] An electronic device (100) according to one embodiment of the present disclosure may set one or more contour points for each of a first target tooth and a second target tooth to set an internal contour of the oral cavity (500) that serves as a basis for forming an inner surface of an intraoral fixture. Hereinafter, a method for setting one or more contour points for the target teeth will be described in detail. The electronic device (100) may set the lingual contour points and the buccal contour points in the same manner or in different manners.

[0098] A contour point refers to one or more points for setting the inner contour of an intraoral fixture. The contour points may include a first contour point (P2, P3) for a first target tooth, a second contour point (P1, P4) for a second target tooth, and a connection point (P5, P6) for smoothly connecting the lingual contour point and the buccal contour point. The electronic device (100) may determine the first contour point (P2, P3) for the first target tooth in a first manner, and may determine the second contour point (P1, P4) for the second target tooth in a second manner different from the first manner. A method for setting the first contour point (P2, P3), the second contour point (P1, P4), and the connection point (P5, P6) will be described in order below.

[0099] The electronic device (100) can set a reference line having a predetermined height (y1) to set an outline point. The reference line can be a straight line parallel to the occlusal plane and spaced a predetermined distance from the occlusal plane in the root direction of the target tooth, and can be used to set the y-coordinate of the outline point.

[0100] The electronic device can set the first contour points (P2, P3) of the first target teeth in a first manner. The electronic device (100) can set the x-coordinates of the first contour points (P2, P3) based on the bounding boxes (520, 530) of the first target teeth. The electronic device (100) can determine the first contour points (P2, P3) based on a straight line connecting the center of the oral cavity (e.g., the center of the bounding box of the entire oral cavity) and the center of the bounding boxes (520, 530) of the first target teeth. For example, the electronic device (100) can move both the center of the oral cavity and the center of the bounding boxes (520, 530) of the first target teeth in the y-axis direction by the height (y1) of the reference line, and set a straight line connecting the moved points. The electronic device (100) can determine the intersection of the straight line and the first target teeth as the first contour points (P2, P3).

[0101] The first method by which the electronic device (100) determines the first contour point (P2, P3) of the first target tooth is not limited to what has been mentioned above, and the electronic device (100) can set the first contour point (P2, P3) in various ways. For example, the electronic device (100) can set the x-coordinate of the first contour point (P2, P3) based on the bounding box (520, 530) of the first target tooth. The electronic device (100) can set the x-coordinate of the first contour point (P2, P3) based on the x-coordinate of the center of the bounding box. For example, the electronic device (100) can determine the x-coordinate of the center of the bounding box as the x-coordinate of the first contour point (P2, P3). The electronic device (100) can set the y-coordinate of the first contour point (P2, P3) based on a reference line. For example, the electronic device (100) can determine the y-coordinate (y1) of the reference line as the y-coordinate of the first contour point (P2, P3).

[0102] The electronic device (100) can set first contour points (P2, P3) corresponding to each tooth of the first target tooth using the first method described above. For example, referring to FIG. 5, the electronic device (100) can set a contour point (P2) for the second tooth, which is the first target tooth, and a contour point (P3) for the third tooth.

[0103] An electronic device (100) according to one embodiment of the present disclosure can set the second contour points (P1, P4) of the second target teeth in a second manner. According to one embodiment, the electronic device (100) can determine the center of the oral cavity (500) based on the bounding boxes of each tooth of the upper and lower jaws. For example, the electronic device (100) can determine the center of gravity of the bounding boxes of a plurality of teeth as the center of the oral cavity (500). For example, the electronic device (100) can set a bounding box of the entire oral cavity including all teeth within the oral cavity (500) and determine the center of the bounding box of the entire oral cavity as the center of the oral cavity (500).

[0104] An electronic device (100) according to an embodiment of the present disclosure can set second contour points (P1, P4) based on the intersection of a straight line connecting the center of the oral cavity (500) and points included in the bounding boxes (510, 540) for the second target teeth and the surface of the second target teeth. For example, the electronic device (100) can set the second contour points (P1, P4) in the following manner. The electronic device (100) can determine a first point that is spaced apart from the center of the oral cavity in the y-axis direction by a value (y2) obtained by adding a predetermined value to the height (y1) of the reference line, and can determine a second point that is spaced apart from a point included in the bounding boxes (510, 540) of the second target teeth by a value (y2) obtained by adding a predetermined value to the height (y1) of the reference line. In this case, the predetermined value can represent a movement in the direction from the root of the second target tooth toward the crown. The electronic device (100) can determine a first intersection point of a straight line connecting a first point and a second point and a second target tooth. The electronic device (100) generates a second straight line connecting the first point and a third point that is spaced apart from the midline by a predetermined distance (e.g., 0.1 mm) in the x-axis direction based on the second point, and if the intersection point of the second straight line and the surface of the second target tooth can be found, the electronic device (100) can determine the point as the second intersection point. If the second intersection point can be found, the electronic device (100) can determine a new straight line and the intersection point of the straight line and the surface of the second target tooth in the same manner as described above. If the intersection point of the second straight line and the surface of the second target tooth cannot be found, the electronic device (100) can determine the intersection point of the previous straight line and the second target tooth as the second contour point (P1, P4).

[0105] The electronic device (100) can set second contour points (P1, P4) corresponding to each tooth of the second target tooth in the second method described above. For example, referring to FIG. 5, the electronic device (100) can set a contour point (P1) for the first tooth, which is the second target tooth, and a contour point (P4) for the fourth tooth.

[0106] An electronic device (100) according to an embodiment of the present disclosure can set connection points (P5, P6) that connect a lingual contour point and a buccal contour point. The electronic device (100) can set the outline of a first shape of an intraoral fixture by connecting the lingual contour point and the buccal contour point, and can additionally set connection points (P5, P6) for smoothly connecting the lingual contour point and the buccal contour point. For example, the electronic device (100) can set the connection points (P5, P6) using the following method. The electronic device (100) can determine a reference point that is spaced apart by a predetermined distance from the center of the bounding box (510, 540) for the second target tooth in a direction away from the center of the oral cavity (500). For example, the electronic device (100) can set the reference point at a point that is spaced apart from the center of the bounding box by the width and height of the bounding box in a direction away from the center of the oral cavity (500). The electronic device (100) can determine the point on the surface of the second target tooth closest to the set reference point as the connection point (P5, P6).

[0107] The electronic device (100) can set connection points (P5, P6) in the manner described above. For example, referring to FIG. 5, the electronic device (100) can set a connection point (P5) for the first tooth, which is the second target tooth, and a connection point (P6) for the fourth tooth.

[0108] In the manner described above, the electronic device (100) can set one or more first contour points (P2, P3), second contour points (P1, P4), and connection points (P5, P6). The electronic device (100) can connect the first contour points (P2, P3), second contour points (P1, P4), and connection points (P5, P6) to generate first data for a first shape of an intraoral fixture. A method for the electronic device (100) to generate second data for a second shape for an intraoral fixture based on data for an antagonist corresponding to a target tooth and the first data will be described in detail later with reference to FIGS. 8 to 11.

[0109] FIG. 6 is a drawing for explaining a method for determining the x-coordinate of a second contour point in a second target tooth according to one embodiment of the present disclosure.

[0110] An electronic device (100) according to an embodiment of the present disclosure may determine a second contour point based on the intersection of a straight line connecting the center of a bounding box of a given tooth and the center of the oral cavity with a tooth surface. Referring to FIG. 6, the electronic device (100) may determine a first point (C) that is spaced apart from the center of the oral cavity by a predetermined value (y2) in the y-axis, and may generate a first straight line (L1) connecting the first point (C) and a second point (A1) that is spaced apart from a point within a bounding box (610) of a target tooth (600) by a predetermined value (y2) in the y-axis. The electronic device (100) may determine a first intersection (A1') of the first straight line (L1) and the target tooth (600). According to an embodiment, the electronic device (100) may set a point spaced apart from the center of the bounding box (610) by a predetermined value (y2) in the y-axis as the second point (A1). The electronic device (100) can determine a third point (A2) that is a predetermined distance away from the midline in the x-axis direction from the second point (A1), and can generate a second straight line (L2) connecting the third point (A2) and the first point (C). If the electronic device (100) can find an intersection of the second straight line (L2) and the target tooth (600), the electronic device (100) can determine the point as the second intersection (A2'). If the second intersection (A2') can be found, the electronic device (100) can determine the third intersection using the same method. For example, the electronic device (100) can determine a fourth point (not shown) that is a predetermined distance away from the midline in the x-axis direction from the third point (A2), and can determine the intersection of the third straight line (not shown) connecting the fourth point and the first point (C) and the target tooth (600) as the third intersection. The electronic device (100) can determine the intersections until it cannot find the intersection of the straight line and the target tooth (600) in the same manner. If the second intersection (A2') cannot be found, the electronic device (100) can determine the first intersection (A1') as the second contour point.

[0111] FIG. 7 is a diagram illustrating a method for determining a connection point according to one embodiment of the present disclosure.

[0112] An electronic device (100) according to one embodiment of the present disclosure can determine a connection point for smoothly connecting a labial contour point and a buccal contour point. Referring to FIG. 7, the electronic device (100) can determine the connection point in the following manner. The electronic device (100) can determine a point within a bounding box (700) of a target tooth as a first reference point (Q1). For example, the electronic device (100) can determine the center of the bounding box (700) as the first reference point (Q1). The electronic device (100) can determine a second reference point (Q2) that is a predetermined distance away from the first reference point (Q1). For example, the electronic device (100) can determine a point that is b in the x-axis and a in the y-axis away from the first reference point (Q1) as the second reference point (Q2). The electronic device (100) may determine a connection point (P5) based on the second reference point (Q2). According to one embodiment, the electronic device (100) may determine the point closest to the second reference point (Q2) among the points located on the surface of the target tooth as the connection point (P5). According to another embodiment, the electronic device (100) may determine the point where a straight line connecting the first reference point (Q1) and the second reference point (Q2) intersects the surface of the target tooth as the connection point (P5). The method by which the electronic device (100) determines the connection point (P5) is not limited to the above-mentioned.

[0113] FIG. 8 illustrates a second shape combined with a first shape according to one embodiment of the present disclosure.

[0114] An electronic device (100) according to one embodiment of the present disclosure can generate first data for a first shape (810) of an intraoral fixture (800), as described with reference to FIGS. 5 to 7. The electronic device (100) can generate second data for a second shape (820) for the intraoral fixture (800), based on the first data and data for an antagonist corresponding to a target tooth. The second shape (820) can be coupled to the first shape (810), and when the first shape (810) is generated based on the upper jaw, it can be coupled to the lower portion of the first shape (810), and when the first shape (810) is generated based on the lower jaw, it can be coupled to the upper portion of the first shape (810). According to one embodiment, when the second shape (820) is coupled to the first shape (810) generated based on the upper jaw, the lips can be opened due to lip contact of a protruding portion of the second shape (820). There is a concern that oral dryness may occur due to mouth breathing when worn during sleep due to the lips being open. Therefore, to prevent this, when the second shape (820) is combined with the first shape (810), the protruding portion of the second shape (820) can be minimized. For example, when the first shape (810) is created based on the upper jaw, the second shape (820) can be combined at the lower end of the first shape (810), and at this time, the second shape (820) can be created so as to protrude backward (lingually) and not forward (labially). According to another embodiment, when the second shape (820) is combined with the first shape (810) created based on the lower jaw, the protruding portion of the second shape (820) may interfere with the positioning of the tongue due to lingual protrusion unrelated to the occlusion of the opposing teeth, which may result in a foreign body sensation in the device. Therefore, to prevent this, the second shape (820) can be created so that it protrudes toward the front (front side) and does not protrude toward the back (back side). For convenience of explanation, the second shape (820) will be described below as being joined to the lower end of the first shape (810).According to one embodiment, the x-axis central axis of the first shape (810) and the x-axis central axis of the second shape (820) may be the same.

[0115] An electronic device (100) according to one embodiment of the present disclosure can determine a width (w) indicating an x-axis direction length of a second shape (820), a height (h) indicating a y-axis direction length, and a depth (d) indicating a z-axis direction length. A method by which the electronic device (100) determines the height (h) and depth (d) of the second shape (820) will be described in detail with reference to FIGS. 9 and 10, respectively.

[0116] An electronic device (100) according to one embodiment of the present disclosure can determine the width (w) of the second shape (820) based on the shape of the target tooth. According to one embodiment, the electronic device (100) can determine the width (w) of the second shape (820) based on the x-axis length of the target tooth. For example, the electronic device (100) can determine the x-axis length of the target tooth as the width (w) of the second shape (820). For example, the electronic device (100) can determine a value obtained by adding a predetermined offset to the x-axis length of the target tooth as the width (w) of the second shape (820). According to another embodiment, the electronic device (100) can determine the width (w) of the second shape (820) as a predetermined value. For example, the electronic device (100) can determine a value (e.g., 10 mm) of the width (w) of the second shape (820) so that the second shape (820) is of a size that can make contact with two teeth.

[0117] FIG. 9 illustrates a combined form of a first shape and a second shape according to one embodiment of the present disclosure.

[0118] According to one embodiment of the present disclosure, the electronic device (100) may determine that the second shape (920) is coupled to the first shape (910) by protruding a predetermined length (h1) (e.g., 1 mm) in the y-axis direction. According to one embodiment, the electronic device (100) may determine the length (h1) by which the second shape (920) protrudes from the first shape (910) in the y-axis direction according to the shape of the oral cavity. For example, the electronic device (100) may determine the length (h1) by which the second shape (920) protrudes from the first shape (910) in the y-axis direction based on the distance between opposing teeth of the oral cavity. The longer the distance between opposing teeth of the oral cavity, the more the second shape (920) may protrude from the first shape (910) in the y-axis direction.

[0119] FIG. 10 is a drawing for explaining a method for determining the depth of a second shape according to one embodiment of the present disclosure.

[0120] An electronic device (100) according to one embodiment of the present disclosure can determine the depth of a second shape (1020) based on a portion of an outer surface of a first shape (1010) and a surface (1030) of an opposing tooth, where the second shape (1020) is to be combined. The electronic device (100) can determine a first depth range (d1) of a portion within a predetermined height (m) from the highest point of the outer surface of the first shape (1010). The electronic device (100) can determine a second depth range (d2) of a portion within a predetermined height (n) from the highest point of a portion of the surface (1030) of the opposing tooth, which will come into contact with the second shape (1020) when the oral attachment (1000) is mounted in the oral cavity. According to one embodiment, m and n may be the same value (e.g., 1 mm).

[0121] Referring to FIG. 10, the electronic device (100) can determine the depth (d) of the second shape (1020) based on the first depth range (d1) and the second depth range (d2). According to one embodiment, the electronic device (100) can determine the depth range that merges the first depth range (d1) and the second depth range (d2) as the depth (d) of the second shape (1020). According to another embodiment, the electronic device (100) can determine the depth range that adds a predetermined offset to the depth range that merges the first depth range (d1) and the second depth range (d2) as the depth (d) of the second shape (1020). The method by which the electronic device (100) can determine the depth of the intraoral attachment (1000) is not limited to what has been described above.

[0122] FIG. 11 illustrates an oral appliance created based on third data according to one embodiment of the present disclosure being installed in the oral cavity.

[0123] An electronic device (100) according to one embodiment of the present disclosure can generate first data for a first shape (1110) of an intraoral fixture (1100) and second data for a second shape (1120) according to the method described in FIGS. 5 to 10. Based on the first data and the second data, the electronic device (100) can generate third data for a third shape of the intraoral fixture (1100) that is a combination of the first shape (1110) and the second shape (1120). By having the intraoral fixture installed in the oral cavity, the user can prevent bruxism in various situations. For example, the intraoral fixture can prevent bruxism by creating a space between the user's upper and lower jaws to prevent direct contact.

[0124] FIG. 12 illustrates an intraoral attachment created based on the maxilla according to one embodiment of the present disclosure being mounted in the oral cavity.

[0125] According to one embodiment, the second shape (1220) of the intraoral fixture (1200) created based on the maxilla may be created in a form that extends lingually (palatally). When the intraoral fixture (1200) is used, the lips may be opened due to contact between the second shape (1220) and the lips, which may cause mouth breathing when worn during sleep, which may lead to dry mouth symptoms. Since dry mouth symptoms due to mouth breathing may cause various health problems such as oral inflammation due to bacterial growth, the position of the second shape (1220) may be adjusted to prevent this. For example, the second shape (1220) may be created to extend lingually from the intraoral fixture (1200). When the second shape (1220) is created to extend lingually rather than labially, contact between the second shape (1220) and the lips is minimized, thereby providing an effect of comfortably closing the lips.

[0126] FIG. 13 illustrates an intraoral fixture created based on the lower jaw according to one embodiment of the present disclosure being installed in the oral cavity. While the methods described in FIGS. 5 to 10 have been described based on the first and second shapes of the intraoral fixture being created based on the upper jaw of the oral cavity, it will be readily apparent that the same content can be applied to an intraoral fixture (1300) created based on the lower jaw of the oral cavity.

[0127] According to one embodiment, the second shape (1320) of the intraoral fixture (1300) generated based on the lower jaw may be generated in a form that extends labially. If the second shape (1320) of the intraoral fixture (1300) generated based on the lower jaw protrudes lingually, it may interfere with the positioning of the tongue, resulting in a foreign body sensation in the oral cavity. Therefore, by extending the second shape (1320) of the intraoral fixture (1300) labially, the foreign body sensation in the oral cavity can be minimized, and in the case of patients with an amputated bite, the size of the device can be minimized so that it can be stably installed in the oral cavity. In addition, when the width of the second shape (1320) is adjusted to increase the occlusal area with the opposing teeth, occlusal pressure may be concentrated on one or two teeth, which may cause pain. However, by distributing the occlusal pressure to multiple teeth, the occlusal relationship between the intraoral fixture (1300) and the target teeth can be more stably maintained, thereby alleviating the pain felt by the patient.

[0128] FIG. 14 is a flowchart of a method for creating an intraoral implant according to one embodiment of the present disclosure.

[0129] An electronic device (100) according to one embodiment of the present disclosure may, in step S1400, identify one or more target teeth based on at least one image of the oral cavity. The one or more target teeth may include a first target tooth, which is an inner tooth, and a second target tooth, which is an outer tooth. According to one embodiment, the target teeth may be four teeth in the anterior region.

[0130] An electronic device (100) according to one embodiment of the present disclosure may generate, in step S1410, first data for a first shape for an intraoral attachment for one or more target teeth based on at least one image.

[0131] An electronic device (100) according to one embodiment of the present disclosure may generate, in step S1420, second data for a second shape for an intraoral attachment based on data for one or more antagonist teeth corresponding to one or more target teeth and the first data.

[0132] An electronic device (100) according to one embodiment of the present disclosure can generate third data for an oral attachment in which a first shape and a second shape are combined, based on the first data and the second data, in step S1430.

[0133] Although the steps of the method or algorithm according to the present disclosure are described in a sequential order in the flowchart illustrated in FIG. 14, the steps may be performed in any order that can be arbitrarily combined according to the present disclosure, in addition to being performed sequentially. The description according to this flowchart does not exclude changes or modifications to the method or algorithm, and does not imply that any step is essential or desirable. In one embodiment, at least some of the steps may be performed in parallel, iteratively, or heuristically. In one embodiment, at least some of the steps may be omitted, or other steps may be added.

[0134] Various embodiments of the present disclosure may be implemented as software on a machine-readable storage medium. The software may be software for implementing various embodiments of the present disclosure. The software may be inferred from various embodiments of the present disclosure by programmers skilled in the art to which the present disclosure pertains. For example, the software may be a program including machine-readable instructions (e.g., code or code segments). The device may be a device capable of operating according to instructions called from a storage medium, such as a computer. In one embodiment, the device may be an electronic device (100) according to embodiments of the present disclosure. In one embodiment, the processor of the device may execute the called instructions, causing components of the device to perform functions corresponding to the instructions. In one embodiment, the processor may be a processor (101) according to embodiments of the present disclosure. The storage medium may refer to any type of recording medium that stores data and can be read by the device. The storage medium may include, for example, ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc. In one embodiment, the storage medium may be memory (103). In one embodiment, the storage medium may be implemented in a distributed form, such as in a network-connected computer system. The software may be distributed and stored and executed in a computer system, etc. The storage medium may be a non-transitory storage medium. A non-transitory storage medium means a tangible medium regardless of whether data is stored semi-permanently or temporarily, and does not include a signal that is propagated transitorily.

[0135] While the technical concept of the present disclosure has been described through various embodiments, it should be understood that the technical concept of the present disclosure encompasses various substitutions, modifications, and variations that can be made within the scope of those skilled in the art to which the present disclosure pertains. Furthermore, it should be understood that such substitutions, modifications, and variations are encompassed within the scope of the appended claims.

Claims

1. In a method performed by an electronic device, A step of identifying one or more target teeth based on at least one image of the oral cavity; A step of generating first data for a first shape for an intraoral appliance for the one or more target teeth based on the at least one image; A step of generating second data for a second shape for the intraoral attachment based on data for one or more antagonist teeth corresponding to the one or more target teeth and the first data; and A step of generating third data for the oral attachment in which the first shape and the second shape are combined based on the first data and the second data. How to include.

2. In paragraph 1, The step of generating the above first data is: A step of generating data on the inner surface of the first shape based on the shape of the one or more target teeth; A step of generating data for the contour of the first shape based on one or more contour points and one or more connection points for the one or more target teeth; and A step of generating data for the outer surface of the first shape based on the data for the inner surface and the data for the outline. A method comprising:

3. In paragraph 2, The step of generating the above first data is: A step of determining a first contour point for a first target tooth among the one or more target teeth in a first manner based on the at least one image; and A step of determining the second contour point for the second target tooth among the one or more target teeth in a second manner different from the first manner. A method comprising:

4. In paragraph 3, A method wherein the one or more target teeth are four anterior teeth, the first target tooth is one of the inner teeth among the four anterior teeth, and the second target tooth is one of the outer teeth among the four anterior teeth.

5. In paragraph 3, The step of determining the first contour point in the first manner is: A step of setting the x-coordinate value of the first contour point to the x-coordinate value of the center of the bounding box for the first target tooth; and A method comprising the step of setting the y-coordinate value of the first contour point to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity.

6. In paragraph 4, The step of determining the second contour point in the second manner is: A method comprising the step of determining the second contour point based on the intersection of a straight line connecting the center of the oral cavity and the center of the bounding box for the second target tooth and the surface of the outer tooth.

7. In paragraph 6, The step of determining the second contour point in the second manner is: A step of determining a first point that is located at a distance from the center of the oral cavity by a predetermined value added to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity in the y-axis direction; A step of determining a second point that is located at a distance from a point within a bounding box for the second target tooth by a predetermined value added to the y-coordinate value of a reference line parallel to the occlusal surface of the oral cavity in the y-axis direction; A step of determining a first intersection point of a straight line connecting the first point and the second point and the surface of the second target tooth; A step of determining a third point located a predetermined distance away in the x-axis direction based on the second point; A step of determining a second intersection point of a straight line connecting the first point and the third point and the surface of the second target tooth; and A method comprising the step of setting the second contour point to a point among the first intersection point and the second intersection point, the point having a greater distance from the first point.

8. In paragraph 7, A method wherein the above predetermined value represents a movement in the direction from the root of the second target tooth toward the crown.

9. In paragraph 3, The step of generating the above first data is: A step of determining a reference point that is a predetermined distance away from the center of the oral cavity based on the center of the bounding box for the second target tooth; and A method comprising the step of determining a point on the surface of the second target tooth closest to the reference point as a connection point.

10. In paragraph 1, The step of generating the above second data is: A step of determining a width indicating the length in the x-axis direction of the second shape; A step of determining a height indicating the y-axis direction length of the second shape; and, A method comprising the step of determining a depth indicating the length in the z-axis direction of the second shape.

11. In paragraph 10, The step of determining the width of the second shape is: A method comprising the step of determining the width of the second shape based on the x-axis direction length of the one or more target teeth.

12. In paragraph 10, The step of determining the height of the second shape is: a step of determining a length by which the second shape protrudes from the first shape in a direction toward the one or more opposing teeth; and A method comprising the step of determining the height of the second shape based on the length to be protruded.

13. In paragraph 10, The step of determining the depth of the second shape is: A step of determining a first depth range of a portion within a set height from the highest point among the portions of the outer surface of the first shape to which the second shape is to be combined; A step of determining a second depth range of a portion of the surface of one or more of the antagonistic teeth that will come into contact with the second shape when the oral fixture is mounted in the oral cavity, the portion falling within a predetermined height from the highest point; and A method comprising the step of determining the depth of the second shape based on the first depth range and the second depth range.

14. In paragraph 13, The step of determining the depth of the second shape is: A method comprising the step of determining the depth of the second shape by adding a predetermined offset after merging the first depth range and the second depth range.

15. In paragraph 1, The step of generating the above third data is: A method comprising the step of generating the third data so that, when the intraoral fixture is mounted in the oral cavity, the center of the second shape is positioned closer to the lingual side with respect to the one or more target teeth, when the one or more target teeth are maxillary teeth.

16. In paragraph 1, The step of generating the above third data is: A method comprising the step of generating the third data such that when the intraoral fixture is mounted in the oral cavity, the center of the second shape is closer to the labial side with respect to the one or more target teeth, when the one or more target teeth are mandibular teeth.

17. In paragraph 1, A method wherein the above oral appliance is an NTI splint.

18. 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 17.

19. A non-transitory computer-readable recording medium having recorded thereon instructions that, when executed by one or more processors, cause the one or more processors to perform an operation, 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 17.

Images