Oral health follow-up studies in the 1993 Pelotas (Brazil) birth cohort study: methodology and principal results.
The aim of this study was to describe oral health follow-up studies nested in a birth cohort. A population-based birth cohort was launched in 1993 in Pelotas, Rio Grande do Sul State, Brazil. Two oral health follow-up studies were conducted at six (n = 359) and 12 (n = 339) years of age. A high response rate was observed at 12 years of age; 94.4% of the children examined at six years of age were restudied in 2005. The mean DMF-T index at age 12 was 1.2 (SD = 1.6) for the entire sample, ranging from 0.6 (SD = 1.1) for children that were caries-free at age six, 1.3 (SD = 1.5) for those with 1-3 carious teeth at six years, and 1.8 (SD = 1.8) for those with 4-19 carious teeth at six years (p < 0.01). The number of individuals with severe malocclusions at 12 years was proportional to the number of malocclusions at six years. Oral health problems in early adolescence were more prevalent in individuals with dental problems at six years of age.
Peres
Marco A
MA
Programa de Pós-graduação em Saúde Coletiva, Universidade Federal de Santa Catarina, Campus Universitário, Florianópolis, SC, Brazil. marco.peres@pesquisador.cnpq.br
Barros
Aluísio Jardim
AJ
Peres
Karen Glazer
KG
Araújo
Cora Luiza
CL
Menezes
Ana M B
AM
Hallal
Pedro C
PC
Victora
Cesar G
CG
D001938:Brazil / Q000453:epidemiology; D002648:Child; D003731:Dental Caries / Q000453:epidemiology*; D004812:Epidemiologic Methods; D006801:Humans; D008310:Malocclusion / Q000453:epidemiology*; D009909:Oral Health