| 摘要 |
PCT No. PCT/FI95/00118 Sec. 371 Date Oct. 11, 1996 Sec. 102(e) Date Oct. 11, 1996 PCT Filed Mar. 1, 1995 PCT Pub. No. WO95/23554 PCT Pub. Date Sep. 8, 1995Intraoral dental radiography based on X-ray photography. The radiography is performed with either a conventional film or a picture plate, in which case the dimensions of the picture may be corrected by means of a computer program while viewing the picture on a monitor. Problems caused by a shallow palate because of the oblique position of the film holder may thus be eliminated, and the top of the roots of the tooth is also visible in the picture. The picture plate or film holder used in the method comprises three interlinked parts, namely a film holder, a bite portion, and an alignment rod, and one sliding part, i.e. the positioning block. |
