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Oral health survey on children in Huairou county-study on the feasibility of water fluoridation in Huairou county

Wang Zuo-min,Zhang Bo-xue, Wang Hong-ying,CAI Hui-li,Hu Wan-qi.Department of Stomatology,Beijing Caoyao Hospital,Capital University of Medical Sciences ,Beijing 100020,China  
Objective:To obtain an epidemiological data of the oral health condition of children in Huairou, to determine whether Huairou county is the optimal area for implementing a water fluoridation program, and establish the longitudinal data on dental caries and dental fluorosis as the reference data.Method: 1562 children of the six age groups were selected for this study by random, cluster sampling method. Oral examinations were conducted on caries experience in all subjects and dental fluorosis of permanent dentition in the 12 and 15 age groups. Result: the prevalence of dental caries of primary dentition in 5 age group was 87.2% and mean dmft values was 5.93. the responding values in 12 age group were 67.7% and 1.73. all the values were significantly higher than the average level in both Beijing and that of National Oral Health Survey. The average CFI was 0.02 in the 12 age group and 0 in the 15 age group.Conclusion: It indicated that Huairou County is an area with high incidence of caries and with no endemic dental fluorosis. It is known that the fluoride concentration in the drinking water is below 0.2 ppm in the objective area. So the data obtained in the epidemiological study suggested that Huairou County is an appropriate area for implementing a water fluoridation program.
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