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龋齿是严重影响学生的常见慢性疾病 ,为了解我县中学生龋齿发病情况 ,以便开展有效的防治工作 ,1999年 10月我们选择城关一所中学进行了专项调查 ,现将结果报告如下。1 对象与方法1.1 对象 蒙城一中高中一至三年级所有在校学生。1.2 方法 按卫生部下发《学校卫生情况年报
Dental caries is a common chronic disease that seriously affects students. In order to understand the incidence of dental caries in middle school students in order to carry out effective prevention and control work, we selected a secondary school in Chengguan in October 1999 to conduct a special survey. The results are reported as follows. 1 objects and methods 1.1 target Mengcheng a high school students in all grades one to three students. 1.2 Methods According to the Ministry of Health issued "School Health Annual Report