In order to photograph the radiograph of the dental root edge in order to obtaining the radiation image of support structure of the gearwheel and the gearwheel inside the buccal cavity, inside the buccal cavity being located on tongue side of the gearwheel, the film holder which supports the film, revolution is installed by the byte section and the aforementioned byte section which are locked to the gearwheel temporarily possibly, revolution is installed by the film supporter and the aforementioned byte section which are located inside the buccal cavity possibly, the aforementioned film supporter and turns together, the film specification section which is located outside the buccal cavity and, includes. The byte section and the film supporter are removed, adjusts to the various buccal cavity structures of the patient and angle of the film supporter changes, can access the change of angle of the film support base from outside, easily adjust the lighting angle of the center line of radiation can.< Choice figure >Drawing 2口腔内の歯と歯の支持構造の放射線画像を得るための歯根端の放射線写真を撮影するために、口腔内で歯の舌側に位置してフィルムを支持するフィルムホルダは、歯に一時的に固定されるバイト部と、前記バイト部に回転可能に装着され、口腔内に位置するフィルム支持部と、前記バイト部に回転可能に装着され、前記フィルム支持部と一緒に回転し、口腔外に位置するフィルム指示部と、を含んでいる。バイト部とフィルム支持部とが取り外され、患者の様々な口腔構造に合わせてフィルム支持部の角度が変化し、フィルム支持台の角度の変化を外部から参照することができ、放射線の中心線の照射角度を容易に調整することができる。【選択図】図2