title: [Dental fluorosis in schoolchildren 12 and 15 years of age in Salvador, Bahia, Brazil, in 2001 and 2004].
abstract: This article compares the results of two surveys in Salvador, Bahia State, Brazil, on prevalence and severity of dental fluorosis in 12 and 15-year-olds. The article discusses the survey methodologies in relation to their sampling process, calibration of examiners, and data collection procedures, comparing the resulting differences using chi-square and 95% confidence intervals obtained with the Dean index. A total of 3,313 adolescents 12 and 15 years of age were analyzed in 2001 and 1,032 in 2004. Both surveys used examiner calibration, and the samples were population-based. In the second survey there were a higher proportion of students from public schools for both ages, as compared to 2001 (p < 0.001). There was no significant difference in the fluorosis rate at 12 years, with a prevalence of 32.64% in 2004 and 31.4% in 2001. For 15-year-olds, the prevalence in 2004 (16.83%) was lower than in 2001 (27.6%). No increase was observed in the prevalence or severity of fluorosis in Salvador from 2001 to 2004.
authors.affiliation: Faculdade de Odontologia, Universidade Federal da Bahia, Salvador, Brazil.
authors.forename: Saulo Regis de
authors.initials: SR
authors.lastname: Oliveira Junior
authors.forename: Maria Cristina Teixeira
authors.initials: MC
authors.lastname: Cangussu
authors.forename: Laíra Sá
authors.initials: LS
authors.lastname: Lopes
authors.forename: Ana Prates
authors.initials: AP
authors.lastname: Soares
authors.forename: Adriana de Andrade
authors.initials: Ade A
authors.lastname: Ribeiro
authors.forename: Lis de Amorim
authors.initials: Lde A
authors.lastname: Fonseca
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D001938:Brazil / Q000453:epidemiology; D002138:Calibration; D016009:Chi-Square Distribution; D002648:Child; D016001:Confidence Intervals; D005260:Female; D005457:Fluoridation; D009050:Fluorosis, Dental / Q000453:epidemiology* / Q000517:prevention & control; D006801:Humans; D008297:Male; D015588:Observer Variation; D009909:Oral Health; D015995:Prevalence; D017678:Sex Distribution