| 摘要 |
This invention relates to an x-ray film holder for intra-oral photographing, comprising a holder head (2) with three slots (10, 11, 12) intended to hold films in different positions and to be inserted in the mouth-cavity of the patient with a film in any of the said slots, and a handle (1) comprising at least a substantially flat bite portion, so that the occlusion plane will be lying on each side of said flat portion. The three slots in the holder head consist of a first slot (10) for a lying film (FIG. 2A) for so called bite-wing exposure, where crowns as well as the border portion of the bone in one of both the jaws are visible on the developed picture, a second slot (11) for an upraised film (FIG. 2B) for so called upraised bite-wing exposure, where crowns as well as the border portion of the bone in both the jaws are visible on the developed picture, and a third slot (12) for so called apical pictures (FIG. 2C) where crown as well as root- and jaw-bone is visible on the developed picture but nothing of the other jaw. |
