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牙列的Ｘ线成像常用颌面体层法，单个牙可用牙科专用Ｘ光机摄取，Ｘ线摄片技术文献中未见牙列投照体位的报道。笔者根据口腔颌面部解剖特点，结合口腔科临床需要，在实践工作中设计了后牙列的投照体位，经３０例临床实验征实影位效果肯定，临床应用满意，谨介绍如下。 设备：岛
The dentition X-ray imaging commonly used in the maxillofacial layer method, a single dental available X-ray machine for dental use, X-ray film no technical documentation of dentition placement reported. According to the anatomical characteristics of oral and maxillofacial region, combined with the clinical needs of dentistry, in the practice of designing posterior dentition column projection position, confirmed by clinical trials of 30 cases of positive results, the clinical application is satisfactory, I would like to introduce the following. Equipment: Island