全口牙缺失后,剩余牙槽骨的吸收是口腔修复中常见而复杂的问题。用以测量牙槽骨吸收的方法和有关的数据资料,目前国内尚未见报道。本文目的是通过对正常(牙合)成年人下颌骨的全景X线片测量,找出下颌体下缘至牙槽嵴顶的高度与颏孔下缘至下颌体下缘高度之间的比例关系,以此作为测量和评价无牙下颌牙槽骨吸收量的依据或参考。同时,从远近中向对颏孔的位置亦作了观察记 The loss of the entire mouth, the remaining alveolar bone absorption is a common and complex problem in oral repair. To measure the alveolar bone absorption method and related data, at present, has not been reported in China. The purpose of this paper is to find out the relationship between the height from the lower edge of the mandible to the crest of the alveolar ridge and the height of the lower edge of the mental foramina to the lower edge of the mandible by measuring the panoramic radiographs of the mandible of a normal occlusion adult , As a measurement and evaluation of toothless mandibular alveolar bone resorption basis or reference. At the same time, from the distance to the position of the mental foramen also made a note