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1986年修订的生活饮用水卫生标准颁布实施以来,笔者就其中氟含量对人体的影响进行了调查。共选择了10个不同氟含量的调查点,每个调查点调查7～17岁常住中小学生400名,10个调查点计4000名。调查项目是每个调查点常住的7～17岁中小学生龋患率和氟斑牙患病率与氟含量的关系。附表可见,龋齿患病率随饮用水中氟含量的增加而逐渐降低。但其降低与氟含量增加的关系不呈
Since the promulgation and implementation of the drinking water hygiene standards revised in 1986, the author has investigated the impact of fluorine content on the human body. A total of 10 different fluorine content survey points were selected. Each survey point investigated 400 resident primary and secondary students aged 7 to 17 and 4,000 in 10 survey points. The survey items are the prevalence of dental caries and the prevalence of dental fluorosis in primary and secondary school students aged 7-17 years at each survey point and the relationship between fluorine content and fluoride content. Schedule shows that the prevalence of dental caries decreased with the increase of fluoride content in drinking water. However, the relationship between the decrease and the increase of fluorine content is not presented