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１９９５年９月～１０月我们对济南市两个区６所幼儿园５４７名５岁儿童和章丘市（农村地区）两个镇１２所幼儿园２７２名５岁儿童的乳牙龋病流行情况进行了调查，报告如下。对象与方法调查的济南市两个区和章丘市两个镇均为随机抽样确定，所有受检者的年龄为５周岁。按照...
From September to October 1995, we investigated the prevalence of deciduous dental caries among 272 children aged 5 years from 547 children aged 5 in 6 kindergartens in two districts of Jinan City and 272 in kindergartens in Zhangqiu City (rural region) , The report is as follows. Subjects and Methods Two districts in Jinan City and two towns in Zhangqiu City were randomly sampled and all subjects were 5 years old. according to...