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.
方法： 五十二个来自北印度有安氏二类一分类错合畸形的女孩，而同样的生体生长成熟状态的病人也被选出来进行研究。
METHODS: Fifty-five girls from North India with Class II Division 1 malocclusion and the same physical growth maturation status were selected for the study.
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