Objective: to investigate the type of upper second molar malocclusion and its related-factors.
目的：探讨上颌第二磨牙错？畸形的种类及相关因素。
Conclusion: Angle Class II division 2 malocclusion is closely related to congenital tooth anomalies.
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.
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。
应用推荐