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- 2018
中国汉族成年人的上前牙临床牙冠长度及宽长比分析
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Abstract:
摘要 目的: 测量汉族成年人的上前牙临床牙冠长度(Clinical crown length,CCL)及宽度-长度比(Clinical crown width∶length ratio,CCW∶CCL)。方法: 2011~2012年于武汉大学招募20~30岁汉族大学生91名(32男、59女),取石膏模型测量双侧上中切牙(U1)、侧切牙(U2)、尖牙(U3)的CCW、CCL并计算CCW/CCL。结果: U1、U2、U3的CCL在男性依次为10.27、8.87、10.19 mm,女性为9.72、8.36、9.46 mm;CCW/CCL在男性依次为0.82、0.79、0.80,女性为0.86、0.83、0.84。CCL的左右侧差异显著,左>右0.08~0.14 mm(P<0.05);性别差异亦显著,男>女(P<0.01)。CCW∶CCL的牙位排序存在性别差异,男为U1=U3>U2,女为U1>U3>U2。CCL、CCW的U1∶U2∶U3比例无性别差异,分别为117∶100∶114、120∶100∶115。结论: 本研究关于中国汉族成年人上前牙CCL、CCW/CCL数据可为我国汉族人牙周和修复美学设计及相关产品研发提供参考
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