Conclusion: the high prevalence of children's saprodontia did a lot of harm to the children's health.

结论：儿童龋齿发病率较高，严重危害儿童的身体健康。

Method: Using WHO's basic methods and the diagnostic standards for saprodontia to survey 859 college freshers.

方法：按WHO口腔健康调查基本方法和龋病诊断标准对859名入学新生进行龋病调查。