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经过对昭通地区小龙洞改灶５年后，燃煤型高氟区２１４名１２岁儿童口腔情况的调查，经过调查结果进行统计学的分析，发现调查对象氟斑牙的患病率达９９５３％，根据每个牙釉质钙化的时间不同。６２１１２６６２１１２６患病程度显著较５４３３４５５４３３４５患病程度严重，进而确证了氟斑牙的形成是因体内摄入高氟对牙釉质钙化形成的抑制作用，高氟可影响牙釉质的钙化，同时也证实了改灶对煤型高氟的氟毒症具有防治作用。
After 5 years of reforming Xiaolongdong in Zhaotong, 214 cases of 12-year-old children in high-fluorine coal-fired area were investigated through the statistical analysis. The prevalence of dental fluorosis in the surveyed subjects was 99%. 53%, depending on the time of each enamel calcification. 621126621126 significantly worse than the 543345543345 degree of illness, thus confirming the formation of dental fluorosis is due to in vivo fluoride intake of enamel calcification formation inhibition, high fluoride can affect the enamel calcification, but also confirmed the change Foci on coal-type fluoride fluoride has a preventive effect.