A position measuring device for orthodontic implant surgery comprises a base, an impression material, a positioning member, and a clamping member. The base is disposed with a fixing portion at the top, and has a first end and a second end. The impression material is mounted on the fixing portion and disposed with a pressure receiving surface at the top for the tooth occlusion positioning. The positioning member is mounted on top of the base and provided with measurement scales made of material impermeable to X-ray. The clamping member is mounted at the first end of the base and provided with a clamping space for clamping X-ray sheet. By making the measurement scales of positioning member parallel to the X-ray sheet and configuring a pressure receiving surface on top of impression material for tooth occlusion positioning, the present invention may make the X-ray sheet from radiation exhibiting the relative relation of tooth to the measurement reference member, so that the dentist may rapidly understand the tooth root positional relation between two teeth.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。本發明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。1‧‧‧定位測定裝置10‧‧‧基座11‧‧‧固定部111‧‧‧開孔12‧‧‧第一端13‧‧‧第二端14‧‧‧止擋部141‧‧‧開口15‧‧‧定位柱20‧‧‧印模材21‧‧‧受壓面22‧‧‧填充部30‧‧‧定位件32‧‧‧套接部40‧‧‧夾固件41‧‧‧夾持空間42‧‧‧底座421‧‧‧擋板43‧‧‧彈性夾固片50‧‧‧定位架51‧‧‧連接桿52‧‧‧定位環53‧‧‧彎曲部70‧‧‧卡固元件71‧‧‧對位塊72‧‧‧卡固凹槽
