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公开(公告)号：US20210077238A1
公开(公告)日：2021-03-18
申请号：US16696511
申请日：2019-11-26
Applicant: 3D Industrial Imaging Co., Ltd.
Inventor： Kyu Nyun KIM
Abstract: Disclosed is a mouth gag, which comprises: a body placed in a patient's mouth to keep the mouth open and expose teeth; and a plurality of markers arranged on the body to allow for determining tooth size.
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