在安氏Ⅱ类错中,很常见的(一组错表现)症状组合是这样的:磨牙呈远中关系,前牙深覆盖伴深覆,上下牙弓不同程度表现拥挤。安氏Ⅱ类错由于下颌后缩,下牙弓后置,前牙由于失去接触(抑止)而过长,这是深覆牙合易于形成的原因,所以安氏Ⅱ类错牙合中深覆比例较高[1]。深覆是安氏Ⅱ类错中 In class II malocclusion, the most common symptom (a group of malocclusion manifestations) is that the molars are distantly related, the anterior teeth are deeply covered with deep overburns, and the upper and lower dental arch are crowded to varying degrees. Class Ⅱ malocclusion due to mandibular retraction, the lower arch, the anterior teeth due to loss of contact (suppression) and long, which is the reason why deep overbite formation, so Class Ⅱ malocclusion deep A higher proportion of overburden [1]. Deep overburden is a Class Ⅱ wrestler