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翻译：
Shantou ChaoNa area water type fluorosis ward improvement of water decreasing fluorine result is analyzed
[abstract] objective: to know the shantou ChaoNa area water type fluorosis improvement of water decreasing fluorine effect, for fluorine ward reasonable planning and improve in the future to provide scientific basis for prevention and cure measures. Methods: by random sampling method, the determination of fluorine ward village resident drinking water water fluorine content and 2812 8 ~ 12 years old children's dental fluorosis sicken and 500 children urine fluorine content. Results: shantou ChaoNa area water type fluorine ward after improvement of water, different improvement of water of clastic village resident drinking water fluorine content than the improvement of water before a significant drop, all than stipulated by the state and drinking water hygiene standard 1.0 mg/L. Change after water, 8 to 12 years old children fluorotic teeth rates are by improvement of water fell to the 62.70% before 15.62%, difference was statistically significant (χ 2 = 4376, P < 0.01). Different improvement of water of children aged 8 to 12 in urine fluorine content 0.360 + 0.367 ~ 0.784 + 0.658 mg/L between. Children's dental fluorosis rates and children's urine fluorine content linearly with improvement of water of the length of extended to drop. With the improvement of water and decreased with the increasing length of. Conclusion: this fluorine ward outstanding achievement, improvement of water condition has been basically control to change water decreasing fluorine and health education mainly of comprehensive prevention and control measures, and are drinking endemic fluorosis caused feasible measures.

[key words] water type fluorosis, Improvement of water decreasing fluorine effect; A survey and analysis