深覆是一种临床常见的上下颌牙弓垂直关系的异常，如何矫治取决于诊断、治疗计划及矫治器的选择，其总的矫治机制可分为前牙压低、后牙伸长、前牙唇倾、手术四种方法，不同的错类型应选择不同的矫治机制。对于伴有垂直生长型以及凸面型、长面型、唇间隙过大或上唇过短... Deep overburden is a clinical common upper and lower arch vertical relationship between the anomalies, how to correct the diagnosis depends on the treatment plan and the choice of appliance, the total correction mechanism can be divided into anterior teeth depression, posterior teeth elongation, before Tooth lip, surgery four methods, different types of wrong  should choose a different correction mechanism. For accompanied by vertical growth and convex type, long type, lip gap is too large or the upper lip is too short ...