下牙槽神经走行于下牙槽神经管中,常常邻近下颌第三磨牙的根尖,在拔除阻生的下颌第三磨牙过程中可能损伤下牙槽神经,而引起下唇、下颌牙龈及下前牙感觉的减弱或丧失。临床拔牙前为了观察阻生牙与下牙槽神经的关系,必须进行 X 线检查,这对下牙槽神经损伤的预测很有帮助。 The inferior alveolar nerve runs in the inferior alveolar neural tube and is often adjacent to the apical root of the third molars of the mandible, which may damage the inferior alveolar nerve during removal of the impacted mandibular third molars, causing the lower lip, mandibular gingiva and lower Feeling or weakening of the anterior teeth. In order to observe the relationship between the impacted teeth and the inferior alveolar nerve before clinical tooth extraction, X-ray examination must be performed, which is very helpful for the prediction of the inferior alveolar nerve injury.