Investigation on the Status of Endemic Fluorosis in Binzhou in 2005

[Objective]To understand the current status of drinking water born endemic fluorosis in Binzhou,Provide scientific basis for prevention and control of the disease.[Methods]Investigation was conducted on the status of children's dental fluorosis in fluorosis endemic areas of Huimin,Boxing and Zhouping counties in 2005,the concentration of fluorine in drinking water was tested.[Results]1 467 children aged 8-12 were investigated,225 children were suspected to have dental fluorosis.There were 653 cases with dental fluorosis(225 were the cases with very slight dental fluorosis,204 with slight dental fluorosis,194 with moderate dental fluorosis and 30 with severe dental fluorosis).Case rate was 44.51%.The index of dental fluorosis was 0.99%.Dental fluorosis defect rate was 9.82%.The morbidity of dental fluorosis was 63.50%,58.20% and 25.2% respectively in abandoned drinking water improvement area,drinking water improvement area and non-improvement area(P0.01).There was no difference of the dental fluorosis in different aged group in abandoned drinking water improvement areas.The concentration of fluorine in drinking water was(2.24±1.21),(1.34±1.05)(P0.05) and(1.00±0.26) in abandoned drinking water improvement area,drinking water improvement area and non-improvement area respectively(P0.01).[Conclusion]The epidemic of endemic fluorosis in Binzhou was serious