伟大领袖毛主席教导我们:“应当积极地预防和医治人民的疾病,推广人民的医药卫生事业。”龋病(烂牙、蛀牙)是人民的多发病之一。供水氟化是一种有效、安全、易行和相当经济的防龋措施,一般认为能减少龋齿50%左右。有关氟化物防龋的效果,国外报道很多,我国也已有介绍。解放后,北京、山 Great leader Chairman Mao teaches us: “We should actively prevent and heal the people’s diseases and promote the people’s medical and health undertakings.” Caries (rotten teeth, tooth decay) are among the people’s frequently-occurring diseases. Fluoridation of water supply is an effective, safe, easy and economical anti-caries measures, generally believed to reduce dental caries by about 50%. The effect of fluoride on caries prevention, many foreign reports, China has also been introduced. After the liberation, Beijing, mountain