氟防龋是常用的方法之一,饮水中加氟防龋是安全而有效的大规模防龋措施。目前国外已有四十多个国家实行饮水氟化防龋,国内有的地区已采用此种方法,取得了显著效果。但是饮水中氟含量高者易发生斑釉,氟含量低者不能达到防龋的目的,一般学者认为氟含量不能超过百万分之一。近年来关于自来水加氟的安全性开展了一些争论,有的学者进行了氟 Anti-caries fluoride is one of the commonly used methods, anti-caries in drinking water fluoride is a safe and effective large-scale anti-caries measures. At present, more than 40 countries abroad have implemented fluoridation and caries prevention in drinking water. Some areas in China have adopted this method and achieved remarkable results. However, the high fluoride content in drinking water is prone to spot glaze, and the low fluoride content can not achieve the purpose of caries prevention. Generally, scholars think that the fluorine content can not exceed one part per million. In recent years on the safety of tap water fluoride carried out some controversy, and some scholars carried out fluoride