Method and system for measuring periodontal pocket depth

    公开(公告)号:US12213852B2

    公开(公告)日:2025-02-04

    申请号:US17289938

    申请日:2019-10-31

    Applicant: 3SHAPE A/S

    Abstract: A system for measuring a depth of a periodontal pocket defined by a gap between a tooth and gingiva includes a frame, one camera, and a processor. The frame is configured to be worn by a user. The camera is configured to capture at least one 2D image of an intraoral target area. The at least one 2D image includes a representation of at least a part of the tooth, a gingiva margin defined by a section of the gingiva adjacent to the at least a part of the tooth, and a probe tip when the probe tip is inserted into the periodontal pocket. The processor is configured to receive the captured at least one 2D image and to determine an insertion length of the probe tip in the periodontal pocket. The determined insertion length represents the depth of the periodontal pocket.

    Detection of a movable object when 3D scanning a rigid object

    公开(公告)号:US12121319B2

    公开(公告)日:2024-10-22

    申请号:US16018827

    申请日:2018-06-26

    Applicant: 3SHAPE A/S

    CPC classification number: A61B5/0062 A61B5/0088 A61C19/04 G06T7/55 G06T2200/04

    Abstract: Detecting a movable object in a location includes providing a first 3D representation of at least part of a surface; providing a second 3D representation of at least part of the surface; determining for the first 3D representation a first excluded volume in space where no surface can be present; determining for the second 3D representation a second excluded volume in space where no surface can be present; if a portion of the surface in the first 3D representation is located in space in the second excluded volume, the portion of the surface in the first 3D representation is disregarded in the generation of the virtual 3D model, and/or if a portion of the surface in the second 3D representation is located in space in the first excluded volume, the portion of the surface in the second 3D representation is disregarded in the generation of the virtual 3D model.

    Detection of a movable object when 3D scanning a rigid object

    公开(公告)号:US10064553B2

    公开(公告)日:2018-09-04

    申请号:US15469009

    申请日:2017-03-24

    Applicant: 3SHAPE A/S

    Abstract: Detecting a movable object in a location includes providing a first 3D representation of at least part of a surface; providing a second 3D representation of at least part of the surface; determining for the first 3D representation a first excluded volume in space where no surface can be present; determining for the second 3D representation a second excluded volume in space where no surface can be present; if a portion of the surface in the first 3D representation is located in space in the second excluded volume, the portion of the surface in the first 3D representation is disregarded in the generation of the virtual 3D model, and/or if a portion of the surface in the second 3D representation is located in space in the first excluded volume, the portion of the surface in the second 3D representation is disregarded in the generation of the virtual 3D model.

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