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作者于1997年8月对烟台市3~6岁2513名儿童进行口腔卫生调查,现将结果报告如下。1 对象与方法1.1 对象 烟台市12所幼儿园共2513名,其中男生1248名,女生1265名,年龄3~6岁,均为健康儿童。1.2 方法 调查人员由从事口腔专业两年以上
The author conducted an oral hygiene survey of 2513 children aged 3 to 6 in Yantai City in August 1997, and the results are reported below. 1 objects and methods 1.1 objects 12 12 kindergartens Yantai a total of 1213, of which 1248 boys and 1265 girls, aged 3 to 6 years old, are healthy children. 1.2 Methods Investigators engaged in dental professional by more than two years