An X-ray film holder for occlusion positioning comprises a base, a first deformable material, a second deformable material, and a clamping piece, and is matched up with an X-ray film and an X-ray irradiation tube to use. The top and bottom surfaces of the base are respectively provided with a first positioning part for mounting the first deformable material and a second positioning part for mounting the second deformable material, and the clamping piece is mounted on the side face of the base and has a clamping space for clamping the X-ray film. In this invention, the first deformable material and the second deformable material on the top and bottom surfaces of the base are occluded by the teeth of a patient to form a first stereoscopic tooth pattern and a second stereoscopic tooth pattern corresponding to the surface shapes of teeth, and the first stereoscopic tooth pattern and the second stereoscopic tooth pattern can jointly form an level device for repeated use and alignment, so that the base can be repeatedly positioned through the level device at the same location of a patients oral cavity, so as to facilitate the dentist to perform follow-up treatment or implant surgery.一種咬合定位的X光持片器,包含:基座、第一型變材、第二型變材以及夾固件,並配合X光片與X光機照射管使用。該基座頂面及底面分別設有裝設第一型變材的第一定位部與裝設第二型變材的第二定位部,而夾固件裝設於基座側面,並具有夾固X光片的夾持空間。本發明藉由基座上下兩端面的第一型變材與第二型變材受到病患牙齒咬合,形成對應牙齒表面形狀樣態的第一立體齒印與第二立體齒印,而第一立體齒印與第二立體齒印共同形成能重複使用對位的準位裝置,使基座透過準位裝置能重複定位至病患口腔中的同一位置,以便於牙醫師進行追蹤治療或植體手術的使用。1‧‧‧咬合定位的X光持片器10‧‧‧基座11‧‧‧第一定位部12‧‧‧第二定位部13‧‧‧通孔14‧‧‧固定孔洞15‧‧‧定位孔16‧‧‧對位塊20‧‧‧第一型變材21‧‧‧第一立體齒印22‧‧‧第一卡塊30‧‧‧第二型變材31‧‧‧第二立體齒印32‧‧‧第二卡塊40‧‧‧夾固件41‧‧‧底座411‧‧‧定位塊412‧‧‧檔板42‧‧‧彈性夾固片43‧‧‧夾持空間50‧‧‧測量基準件51‧‧‧測量刻度60‧‧‧定位架61‧‧‧組裝部611‧‧‧卡固凹槽62‧‧‧定位桿63‧‧‧定位環70‧‧‧握把71‧‧‧卡合凸塊80‧‧‧升降裝置81‧‧‧調整裝置811‧‧‧延長部812‧‧‧第一連接部813‧‧‧第二連接部
