Analysis of disease surveillance of endemic fluorosis in Yanqing county of Beijing in 2008
10.3760/cma.j.issn.1000-4955.2010.02.018
- VernacularTitle:2008年北京市延庆县地方性氟中毒病情监测分析
- Author:
Rui-ping, GAO
;
Ying, XU
- Publication Type:Journal Article
- Keywords:
Fluoride poisoning;
Fluomsis,dental;
Water;
Urine;
Epidemiologic studies
- From:Chinese Journal of Endemiology
2010;29(2):176-178
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effectiveness of defluoridization of water and the morbidity trends in endemic fluoroais areas in Yanqing county of Beijing, in order to provide the basis for the formulation of prevention and control measures. Methods In 2008, stratified random was used to collect water samples to detect the amount of drinking water fluoride in three villages(Gujiaying, Bojiying and Hujiaying) in Yanqing county using ion-selective electrode in both dry and rainy seasons. Sixty-three students in 8 - 12 years old and 664 adults over 16 years of age were determined of urinary fluoride, and examine the prevalence of dental fluorosis. ResultsThe fluorine content in drinking water in the dry and rainy seasons was (0.72 ± 0.12), (0.76 ± 0.18)mg/L, respectively. The median of fluorine content in urine of children was 1.11 mg/L with the range of 0.32 - 4.15 mg/L; the median of fluorine content in urine of adult was 1.42 mg/L with the range of 0.37 - 4.65 mg/L. The detection rate of dental fluorosis in children was 23.81%(15/63), dental fluorosis index was 0.45; the detection rate of dental fluorosis in adult was 54.97% (365/664), dental fluorosis index was 1.70. Conclusions Fluorine content in drinking water meets the national standard in Yanqing county. The morbidity of endemic fluorosis descends in some extent in a result of defluoredization.
