| 摘要 |
<p>Disclosed is a film holder which is positioned at the lingual side of teeth in an oral cavity and which supports a film to take a radiographic image of teeth and dental support structures intraorally, wherein the radiographic image is obtained through radiography of root apex. The film holder comprises: a bite part temporarily fixed to teeth; a film supporting part which is mounted inside the oral cavity so as to be rotational with respect to the bite part; and a film indicating part which is mounted at the outside of the oral cavity so as to rotate along with the film supporting part with respect to the bite part. The angle of the film supporting part can be changed depending on patients' various dental structures by separation of the bite part and the film supporting part. Also, the irradiation angle of the center of the radiation can be easily adjusted by referring to the change in the angle of the film supporting part from the outside.</p> |
