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平衡、稳定和美观是正畸治疗的三大目标[1]。随着时代的发展,改善外貌美观已经成为绝大部分正畸患者的首要诉求。安氏Ⅲ类错牙合是临床常见的错牙合畸形之一,其主要表现为磨牙近中关系,前牙反牙合、浅覆牙合,下颌发育过度,上颌发育不足,侧貌呈现凹面型等[2],对患者的美观及功能产生不良影响。正畸治疗通过对颊旁间隙、微笑线、微笑弧等的控制可在一定程度上改善Ⅲ类错牙合患者面部美观性。目前,临床上对骨性Ⅲ类错牙合患者的治疗一般包含以
Balance, stability and aesthetics are the three major goals of orthodontic treatment [1]. With the development of the times, improving the aesthetic appearance has become the primary appeal of most orthodontic patients. Class III malocclusion is one of the most common malocclusion in clinical practice. Its main manifestations are molar near-middle relationship, anterior crossbite, overbite occlusion, excessive mandibular overgrowth, maxillary hypoplasia, Type [2], the patient’s appearance and function of adverse effects. Orthodontic treatment can improve facial aesthetics of patients with type III malocclusion through the control of cheek space, smile line, smile arc and so on. At present, the clinical treatment of skeletal Class Ⅲ malocclusion patients are generally included