我国国土辽阔,地层结构复杂,氟的危害遍及全国,程度轻重不等,重者产生氟骨症及其他系统症状,轻者引起氟牙症,因此,在应用氟化物防龋时,应持慎重态度。 我国北方的氟害主要是由饮水含氟过多引起的,南方则与食物、食盐等有关。 据称,我国人民对氟较为敏感,不少报告指出,当水氟浓度在1ppm时即可产生氟斑牙,0.5ppm地区 China's vast territory, stratum structure is complex, the dangers of fluorine all over the country, ranging in severity, severe skeletal fluorosis and other system symptoms, light caused by dental fluorosis, therefore, the application of fluoride anti-caries, should be cautious attitude. Fluorine in northern China is mainly caused by too much fluorine in drinking water, while in the south, it is related to food, salt and so on. Allegedly, our people are more sensitive to fluorine, many reports pointed out that when the water fluoride concentration at 1ppm can produce dental fluorosis, 0.5ppm area