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This study aimed to determine the prevalence of dental fluorosis in a sample of 3,313 schoolchildren (ages 12 and 15) in a health district in Salvador, Bahia, Brazil. A cross-sectional study was developed, and data were collected by seven examiners (kappa = 0.69) according to WHO criteria (the Dean index). Additional information such as participation in programs, access to a dentist, place of residence from 0-5 years of age, sex, and ethnicity were obtained through a questionnaire. A descriptive analysis was performed for the municipality as a whole and for each district. According to the results, 31.4% of the 12-year-olds and 27.6% of the 15-year-olds presented fluorosis, predominantly of the "very mild" type. Differences were found between the districts (p&lt;0.05). The districts of Pau da Lima and Brotas had the highest percentages of healthy individuals at 12 years of age (81.8% and 81.6%). At 15 years, Subúrbio Ferroviário, Pau da Lima, and Cajazeiras were the districts with the lowest prevalence rates (13.0%, 14.6%, and 13.5%). The district of Liberdade had the highest prevalence (72.4% and 57.3%) at 12 and 15 years, respectively, attributed to differences in calibration. Differences were found between the health districts, thus emphasizing the need for health surveillance.

Prevalência da fluorose dentária em escolares de 12 e 15 anos de idade em Salvador, Bahia, Brasil, 2001