下颌骨斜位摄片的目的主要是观察下颌体及下颌支的骨质病变。 下颌骨正位摄片较简单，但只能观察下颌支及颞颌关节的病变。至于下颌体，因呈近轴位表现，且与颈椎重叠因而显示不满意，如有病灶，亦因重叠而看不清；下颌骨颏部亦因与颈椎重叠而显示不清。照下颌骨侧位，左右下颌 The purpose of mandibular oblique photography is mainly to observe the bone lesions of mandibular body and mandibular branch. Mandibular radiography is relatively simple, but only observed mandibular branch and temporomandibular joint lesions. As for the mandibular body, due to the performance of the paraxial position, and overlap with the cervical spine and thus show dissatisfaction, if lesions, but also due to overlapping and can not see; mandibular chin also due to overlapping with the cervical vertebra display unclear. According to the mandibular lateral position, left and right jaw