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- 2015
正常牙合人群口周软组织增龄性变化的研究
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Abstract:
摘要 目的:探讨正常牙合人群口周软组织在休息位与微笑位时随年龄变化特征。方法:选择15~49岁个别正常牙合者240例,进行面像拍摄,应用Smile Measure软件测量其口周软组织。结果:各年龄组间进行两两比较,组间差异有意义的测量项目有休息位上唇长度、微笑位上唇长度、休息位上唇厚度、微笑位上唇厚度、休息位口角宽度、口角宽度变化量、上颌切牙暴露量、上下唇间隙、微笑指数、颊旁间隙(P<0.05)。同一年龄组不同性别进行两样本t检验,差异有意义的测量项目有休息位上唇长度、微笑位上唇长度、上唇长度变化量、休息位口角宽度(P<0.05)。微笑高度进行卡方检验, G1、G2、G3、G4组高中低位微笑类型男女性别差异均具有统计学意义(P<0.05)。结论:随年龄增长,上唇长度变长,嘴唇变薄,微笑时口角变宽,颊旁间隙变大,更趋于低位微笑。相同年龄人群的唇齿关系具有性别差异
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