A kind of correction implant operation position-finding device in oral cavity includes: pedestal, modeling composition, locating piece and clamping piece. It is equipped with fixed part at the top of the pedestal what, and there is first end and second end； Modeling composition installs what fixed part, and the compression face positioned for dental articulation is equipped at the top of what； Locating piece is installed at the top of what pedestal, and has Measurement scales made of X-ray impermeability material； The clamping piece installs the first end of what pedestal, and the grasping part with clamping X-ray. This creation is presented parastate by the Measurement scales and X-ray of locating piece and cooperates the compression face for being equipped at the top of modeling composition and positioning for dental articulation again, enable to irradiate the relativeness that tooth Yu measuring basis part is presented in X-ray, allows dentist, odontologist that can quickly understand two interdental root of the tooth positional relationships.一種口腔矯正植體手術用定位測定裝置，包含：基座、印模材、定位件以及夾固件。該基座於頂部設有固定部，並具有第一端與第二端；印模材裝設於固定部，並於頂部設有供牙齒咬合定位的受壓面；定位件裝設於基座頂部，並具有X光不透性材料製成的測量刻度；該夾固件裝設於基座的第一端，並具有夾固X光片的夾持空間。本創作藉由定位件的測量刻度與X光片呈現平行狀態再配合印模材頂部設有供牙齒咬合定位的受壓面，使照射出來X光片能呈現牙齒與測量基準件的相對關係，讓牙醫師能快速了解兩顆牙齒之間的牙根位置關係。
