【摘要】 抽取界首市５ 个乡镇１０ 所中学和１１ 所小学中８ ～１５ 岁学生１５９２４ 人进行氟斑牙患病情况调查。平均患病率为３０ ．１８ ％ ；不同人群间患病率有较大差异。其中城市高于农村，大年龄组高于小年龄组。男性与女性差异无显著性。结果揭示要降低氟班牙的患病率，必须降低饮水中的氟含量，使其达到饮用水标准更多还原

【Abstract】 Dental fluorosis of 15924 students at ten middle schools and eleven primary schools in five towns located in north,south,east,west and centre of Jieshou City respectively was investigated.The results showed that the average prevalence rate of dental fluorosis in the population was 30.81%.There are significant differences of the prevalence rate in different groups of the population,of which,that of the urban students ( 38.45% ) was higher than that of the rural students (26.86%),that of the primary school students (37.46%) was higher than that of the middle school students.There was not obvious difference between the rate of the male students (29.81%) and that of the female students (30.80%). The results tell us that only fluoride in drinking water is reduced and only the drinking water is fit for drinking water standard,can the prevalence rate be reduced.更多还原