Mutschelknauss R, von der Ohe H G
Dtsch Zahnarztl Z. 1978 Jan;33(1):68-76.
27 patients with periodontal lesions were examined by Panorex layered film and 14 intra-oral dental X-ray films (Updegrave's long tube right angle technique). The result of this enquiry shows that the two radiological methods do not compete with one another. Each has advantages over the other which derive from fundamentally different exposure techniques. The dental status films with right angle technique are superior in showing clear periodontal structures and hard dental tissue whilst the Panorex method gives X-ray surveillance over the whole mastication organ and neighbouring structures which cannot be visualised in its entirety by the intra-oral method.
对27例牙周病损患者采用全景分层片及14张口腔内牙片（厄普德格雷夫长管直角投照技术）进行检查。本次调查结果表明，这两种放射学检查方法并不相互竞争。每种方法相对于另一种方法都有各自的优势，这些优势源于根本不同的投照技术。采用直角投照技术的牙片在显示清晰的牙周结构和硬牙组织方面更具优势，而全景片方法能够对整个咀嚼器官及邻近结构进行X线监测，这是口腔内投照方法无法全面显示的。
