目的研究替牙期假性安氏III类错的牙颌特征，为早期诊断提供依据。
Objective To find the dentoskeletal characteristics of pseudo Class III malocclusion in mixed dentition.
目的比较安氏II I类错伴下颌偏斜患者髁突的位置与安氏I类患者髁突位置的差异。
Objective To investigate if condylar position in children with Class III malocclusion and mandible deviation was different from that found in children with Class I malocclusion.
结论：安氏II类2分类错牙合与过小侧切牙、釉质发育不良、先天缺牙密切相关。
Conclusion: Angle Class II division 2 malocclusion is closely related to congenital tooth anomalies.
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