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    Dental probe
    11.
    发明授权
    Dental probe 有权

    公开(公告)号：US11766177B2

    公开(公告)日：2023-09-26

    申请号：US17337563

    申请日：2021-06-03

    申请人： DENTSPLY SIRONA inc.

    发明人： Thomas Ertl ,  Naim Karazivan ,  Alexander Savic

    IPC分类号： A61B5/00 ,  A61B5/026 ,  A61C1/08

    CPC分类号： A61B5/0088 ,  A61B5/0261 ,  A61B5/682 ,  A61B2562/0238 ,  A61C1/088

    摘要： A dental probe for determining the vitality of a tooth, comprising a light emitter and a light receiver, wherein the light emitter emits light from an emitter surface adapted to be positioned on a hard dental surface of a tooth, wherein the light receiver collects light incident on a receiver surface adapted to be positioned on a hard dental surface of the tooth so that the optical path of the light emitted from the light emitter passes at least through a portion of the pulp chamber of the tooth. The light receiver includes a light shielding spacer member adjacent to the optical path for establishing and maintaining a distance of at least 50 μm between the gum line and the optical path at the receiver surface. The light emitter further a light shielding spacer member adjacent to the optical path for establishing and maintaining a distance between the gum line and the optical path at the emitter surface, wherein the light shielding spacer member establishes and maintains a distance of at least 50 μm between the gum line and the optical path at the emitter surface, and in that an apical-coronal diameter of the light emitter surface and the light receiver surface is at most 1200 μm in the direction normal to the optical path.