方法 1,普查对角为本市铁路小学的7～13岁全体在校生。 2、普查人员由两名有经验的口腔科医师担任。采用自然光检查,检查器械包括探针、口镜、牙科镊。检查方法以问、视、探诊为主,未采用X片检查。 3、普查标准根据1957年《关于龋病牙用病全国性统计调查的规定》将龋齿分为5度,可疑龋未列入其内。普查前制定统一的调查卡片。结果与分析调查结果分析:3709名小学生中有龋病者1099人,患龋率29.36％,龋齿总数1722个,龋均0.46,患龋者龋均1,57(表Ⅰ)。患龋率、龋均、患龋者龋 Method 1, the census diagonal for the city railway primary school of all students aged 7 to 13 years old. 2, census officers by two experienced dentists. Using natural light examination, inspection equipment, including probes, oral mirror, dental forceps. Inspection methods to ask, depending on the exploration-based, did not use X-ray examination. 3, census standards According to the “1957” on the national dental caries statistics, dental caries will be divided into 5 degrees, suspicious caries are not included. Establish a uniform survey card before the census. Results and Analysis Analysis of the survey results: Among 10999 pupils, there were 1099 dental caries patients with caries prevalence rate of 29.36%, 1722 dental caries counts, 0.46 caries counts and 1,57 caries (Table I). Caries prevalence, caries were caries-bearing caries