饮水加氟的概况为了预防龋齿,自从1945年美国首先作饮水氟化以来,目前世界上已有几十个国家和2,500个城市进行饮水氟化。所用的氟化物有氟化钠、氟硅酸钠、氟化钙、氟硅酸镁、氟化钾等,其中主要用氟化钠、氟硅酸钠。1945年加拿大和美国一些城市的饮水加氟量为1.2ppm。日本是在1952年开始自来水氟化的,加氟量为0.6ppm。一般认为不引起氟斑牙,而抑制龋齿发生的饮水中氟含量为1ppm左右,这个量对 Drinking Water and Fluorin Overview In order to prevent tooth decay, fluoride fluoride has been used in drinking water since the United States first made fluoridation of drinking water in 1945 in dozens of countries and 2,500 in the world. Fluoride used sodium fluoride, sodium fluoride, calcium fluoride, magnesium silicate, potassium fluoride, etc., of which the main sodium fluoride, sodium fluoride. In 1945 Canada and the United States in some cities drinking water fluoride was 1.2ppm. Japan started to tap water fluoride in 1952, with a fluorine content of 0.6ppm. Generally believed that does not cause dental fluorosis, and inhibit the occurrence of dental caries fluoride content of about 1ppm, the amount of