与颞下颌关节紊乱病(Temporomandibular disor-der,TMD)的发病密切相关,目前已成为口腔学者们关注的焦点之一。重度深覆是临床常见的错畸形,对于口颌系统的健康、美观及功能危害严重。许多学者[1-8]认为深覆与TMD关系最为密切,是TMD的一种易感因素。国外Williamson[4]认为颅颌功能紊乱(CMD)与深覆有明显联系,对CMD患者的咬合调查分析表明深覆的比率可达80％;Berry[5]认为深覆浅覆盖的前牙关系与弹响的存  is closely related to the pathogenesis of temporomandibular disor-der (TMD), and has become one of the focuses of oral scholar. Severe deep   is a common clinical error  deformity, the oral health of the jaw system, aesthetics and function of serious harm. Many scholars [1, 8] think that Tuofu is the most closely related to TMD and is a susceptible factor of TMD. Foreign Williamson [4] that the cranio-mandibular dysfunction (CMD) and the deep Tuo there are obvious links in CMD patients occlusal survey showed that the ratio of deep Tuo up to 80%; Berry [5] that Shallow Tuo shallow cover Anterior teeth relationship and snapping deposit