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EP-4740898-A1 - ELECTRONIC DEVICE, METHOD, AND RECORDING MEDIUM FOR GENERATING CERVICAL PROSTHESIS

EP4740898A1EP 4740898 A1EP4740898 A1EP 4740898A1EP-4740898-A1

Abstract

The present disclosure relates to an electronic device, a method, and a recording medium for generating cervical prosthesis. An electronic device according to an embodiment of the present disclosure may include: at least one processor; and at least one memory configured to store instructions to be executed by the at least one processor, wherein the at least one processor is configured to, when the instructions are executed by the at least one processor: acquire three-dimensional data of a subject's oral cavity, the three-dimensional data including three-dimensional coordinate values; based on the three-dimensional data, generate a three-dimensional image model; based on the three-dimensional image model, determine a first line included in a cervical prosthesis for a specific tooth of the subject; based on the first line, determine a second line included in a guide portion configured to assist insertion of the cervical prosthesis; based on the first line, generate information representing the cervical prosthesis; and based on the second line, generate information representing the guide portion.

Inventors

  • KOO, Minkyo

Assignees

  • Medit Corp.

Dates

Publication Date
20260513
Application Date
20240628

Claims (14)

  1. An electronic device comprising: at least one processor; and at least one memory configured to store instructions to be executed by the at least one processor, wherein the at least one processor is configured to, when the instructions are executed by the at least one processor: acquire three-dimensional data of a subject's oral cavity, the three-dimensional data comprising three-dimensional coordinate values; based on the three-dimensional data, generate a three-dimensional image model; based on the three-dimensional image model, determine a first line included in a cervical prosthesis for a specific tooth of the subject; based on the first line, determine a second line included in a guide portion configured to assist insertion of the cervical prosthesis; based on the first line, generate information representing the cervical prosthesis; and based on the second line, generate information representing the guide portion.
  2. The electronic device of Claim 1, wherein an internal area of a closed curve obtained by projecting the second line in a specific direction, which is an insertion direction of the cervical prosthesis, onto a plane perpendicular to the specific direction, is larger than an internal area of a closed curve obtained by projecting the first line in the specific direction onto the plane perpendicular to the specific direction.
  3. The electronic device of Claim 1, wherein the at least one processor is configured to generate information representing a connection portion configured to connect the cervical prosthesis and the guide portion.
  4. The electronic device of Claim 3, wherein the connection portion comprises: a body portion; a first connection portion configured to connect the body portion to the cervical prosthesis; and a second connection portion configured to connect the body portion to the guide portion, and wherein the information representing the connection portion comprises information that makes each of one or more dimensions of the first connection portion smaller than a corresponding dimension of the second connection portion.
  5. The electronic device of Claim 1, wherein the at least one processor is configured to: based on the three-dimensional image model, acquire a user input for information indicating multiple points corresponding to the first line; and based on the user input, determine the first line.
  6. The electronic device of Claim 1, wherein the at least one processor is configured to generate the information representing the cervical prosthesis, which comprises information indicating an inner surface of the cervical prosthesis and an outer surface of the cervical prosthesis that are distinguished based on the first line.
  7. The electronic device of Claim 1, wherein the at least one processor is configured to, based on the three-dimensional data of a surface of a worn cervical portion of the specific tooth, determine information indicating an inner surface of the cervical prosthesis such that a space is formed between the inner surface of the cervical prosthesis and the surface of the worn cervical portion of the specific tooth in case that the cervical prosthesis is mounted on the specific tooth.
  8. The electronic device of Claim 1, wherein the at least one processor is configured to, based on information indicating an inner surface of the cervical prosthesis and the first line, determine information indicating an outer surface of the cervical prosthesis.
  9. The electronic device of Claim 1, wherein the at least one processor is configured to: determine a first surface, which is an interior region of a closed curve obtained by projecting the first line in a specific direction, which is an insertion direction of the cervical prosthesis, onto a second plane perpendicular to the specific direction; and based on the first surface and the first line, determine information indicating an outer surface of the cervical prosthesis through a predetermined transformation algorithm.
  10. The electronic device of Claim 1, wherein the at least one processor is configured to generate the information representing the guide portion, which comprises information indicating an inner surface of the guide portion and an outer surface of the guide portion that are distinguished based on the second line.
  11. The electronic device of Claim 1, wherein the at least one processor is configured to, based on the three-dimensional data of a surface of the specific tooth above the worn cervical portion of the specific tooth, determine information indicating an inner surface of the guide portion.
  12. The electronic device of Claim 1, wherein the at least one processor is configured to: determine a second surface obtained by offsetting an inner surface of the guide portion or a surface of the specific tooth above the worn cervical portion of the specific tooth by a fourth predetermined distance in a specific direction which is an insertion direction of the cervical prosthesis; and based on the second surface, determine information indicating an outer surface of the guide portion.
  13. A method for processing information about cervical prosthesis generation, performed by an electronic device comprising at least one processor and at least one memory configured to store instructions to be executed by the at least one processor, the method comprising: acquiring three-dimensional data of a subject's oral cavity, the three-dimensional data comprising three-dimensional coordinate values; based on the three-dimensional data, generating a three-dimensional image model; based on the three-dimensional image model, determining a first line included in a cervical prosthesis for a specific tooth of the subject; based on the first line, determining a second line included in a guide portion configured to assist insertion of the cervical prosthesis, based on the first line, generating information representing the cervical prosthesis; and based on the second line, generating information representing the guide portion.
  14. A non-transitory computer-readable recording medium storing instructions executable by at least one processor, the instructions, when executed by the at least one processor, causing the at least one processor to: acquire three-dimensional data of a subject's oral cavity, the three-dimensional data comprising three-dimensional coordinate values; based on the three-dimensional data, generate a three-dimensional image model; based on the three-dimensional image model, determine a first line included in a cervical prosthesis for a specific tooth of the subject; based on the first line, determine a second line included in a guide portion configured to assist insertion of the cervical prosthesis; based on the first line, generate information representing the cervical prosthesis; and based on the second line, generate information representing the guide portion.

Description

TECHNICAL FIELD The present disclosure relates to a technology for generating a cervical prosthesis and, more particularly, to a technology for generating a cervical prosthesis that can be inserted into a worn cervical portion of a subject. BACKGROUND ART A cervical inlay procedure is a process of inserting a prosthesis into a worn cervical portion (the boundary area between the tooth and gingiva). Conventional cervical inlay procedures necessarily involve a process of manually inserting a prefabricated prosthesis into the worn cervical portion. However, manually inserting the prosthesis near a gingival region was an extremely inconvenient task for dentists. Therefore, there has been a need for a technique that facilitates the attachment of a prosthesis to a worn cervical portion. DISCLOSURE TECHNICAL PROBLEM A technical problem to be solved by an embodiment of the present disclosure is to facilitate attachment of a prosthesis to a worn cervical portion. TECHNICAL SOLUTION Another technical problem to be solved by an embodiment of the present disclosure is to manufacture a prosthesis having an appropriate shape to be inserted into a worn cervical portion. Another technical problem to be solved by an embodiment of the present disclosure is to simplify a process of generating a cervical prosthesis using a 3D printer and CAD. Technical problems of the present disclosure are not limited to the above-described technical problems, and other technical problems not described herein will be clearly understood by those skilled in the art of the present disclosure from the following description. TECHNICAL SOLUTION An electronic device according to an embodiment of the present disclosure may include: at least one processor; and at least one memory configured to store instructions to be executed by the at least one processor, wherein the at least one processor is configured to, when the instructions are executed by the at least one processor: acquire three-dimensional data of a subject's oral cavity, the three-dimensional data including three-dimensional coordinate values; based on the three-dimensional data, generate a three-dimensional image model; based on the three-dimensional image model, determine a first line included in a cervical prosthesis for a specific tooth of the subject; based on the first line, determine a second line included in a guide portion configured to assist insertion of the cervical prosthesis; based on the first line, generate information representing the cervical prosthesis; and based on the second line, generate information representing the guide portion. In an embodiment, an internal area of a closed curve obtained by projecting the second line in a specific direction, which is an insertion direction of the cervical prosthesis, onto a plane perpendicular to the specific direction, may be larger than an internal area of a closed curve obtained by projecting the first line in the specific direction onto the plane perpendicular to the specific direction. In an embodiment, the at least one processor may be configured to generate information representing a connection portion configured to connect the cervical prosthesis and the guide portion. In an embodiment, the connection portion may include: a body portion; a first connection portion configured to connect the body portion to the cervical prosthesis; and a second connection portion configured to connect the body portion to the guide portion, and wherein the information representing the connection portion includes information that makes each of one or more dimensions of the first connection portion smaller than a corresponding dimension of the second connection portion. In an embodiment, the at least one processor may be configured to: based on the three-dimensional image model, acquire a user input for information indicating multiple points corresponding to the first line; and based on the user input, determine the first line. In an embodiment, the at least one processor may be configured to generate the information representing the cervical prosthesis, which includes information indicating an inner surface of the cervical prosthesis and an outer surface of the cervical prosthesis that are distinguished based on the first line. In an embodiment, the at least one processor may be configured to, based on the three-dimensional data of a surface of a worn cervical portion of the specific tooth, determine information indicating an inner surface of the cervical prosthesis such that a space is formed between the inner surface of the cervical prosthesis and the surface of the worn cervical portion of the specific tooth in case that the cervical prosthesis is mounted on the specific tooth. In an embodiment, the at least one processor may be configured to, based on the information indicating the inner surface of the cervical prosthesis and the first line, determine information indicating an outer surface of the cervical prosthesis. In an embodiment, the