目的了解替牙期小学生龋坏的影响因素,为制定预防措施提供依据.方法随机抽取以8～10岁为主的小学生156名,分析恒、乳牙龋坏与年龄、性别、软垢等因素的相关性.结果患龋率以9岁组最高,但年龄和性别差异无统计学意义.软垢指数年龄和性别差异无统计学意义.有乳牙龋坏的软垢指数明显高于无乳牙龋坏者,差异有统计学意义.多因素分析表明:在乳牙龋坏过程中,年龄、软垢对其影响较大.结论为有效防止8～10岁小学生乳牙龋坏,加强口腔卫生知识宣教、控制软垢、定期检查和预防治疗是关键.%[Objective] To assess the effect of factors in primary scholar's caries during mixed dentition, so as to take pertinent measures to prevent caries. [Mothods] 156 primary scholars, who were mainly aged 8～10, were selected randomly, then the correlation between caries of deciduous and permanent teeth and age, sex, food debris was analyzed by single and multiple factor statistical analysis. [Results] The prevalence rate of caries in group of age 9was the highest than that in other age groups. There was no statistical significance among age (8,9,10) groups and between sex (male, female) groups in prevalence rate. There was no statistical significance among age (8,9,10) groups and between sex (male, female)groups in debris index(DI). There was statistical significance in debris index (DI) between primary scholars with caries of deciduous teeth and those without it. Multiple factor statistical analysis showed:age and debris were the main factors inducing caries of deciduous teeth. [Conclusion] In order to prevent primary scholar's caries during mixed dentition effectively, oral healthcare education, eliminating food debris, regular check and prophylactic treatment are crucial.
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