OBJECTIVETo determine the feasibility of water fluoridation to prevent caries in Kunming by investigating the epidemiological status of dental caries and dental fluorosis of children, and to provide the longitudinal reference data for the long-term epidemiology survey of dental caries and dental fluorosis in Kunming city.

METHODSThrough stratified cluster sampling method, 212 5-year-old children and 1149 12-year-old children were recruited in the survey. Dental caries condition of each child was clinically examined, dental fluorosis was examined in 12-year-old group.

RESULTSThe prevalence of dental caries of primary teeth in 5-year-old group was 73.6%, mean value was 4.47 +/- 4.39. The values of permanent teeth in 12-year-old group were 53.5% and 1.42 +/- 1.83. The prevalence of dental fluorosis in 12-year-old group was 4.1% and the average community fluorosis index was 0.03.

CONCLUSIONBased on the high prevalence of dental caries and the low prevalence of dental fluorosis, it is suggested that using water fluoridation to prevent caries is feasible and necessary in Kunming city.