1998年底对石家庄市一所小学 1770名 7～ 12岁年龄组儿童的患龋情况进行调查。按《龋病 -牙周病全国统计调查表规定》,对小学生进行调查 ,凡恒牙龋、乳牙龋均作为龋齿计算 ,按统一表格填写。检查方法依照视诊和探诊 ,未做 X片检查。1770名小学生中患龋人数为 10 6 9名 ,患龋率 The end of 1998 on a primary school in Shijiazhuang, a city of 1770 children aged 7-12 years suffering from caries were investigated. According to the “caries - periodontal disease national statistical questionnaire”, primary school students were investigated, where permanent teeth caries, deciduous caries are calculated as dental caries, according to a unified form. Inspection methods in accordance with the diagnosis and exploration, not X-ray examination. The number of 1770 primary school students with dental caries was 106, with caries prevalence