Longitudinal study of dental caries in Brazilian children aged from 12 to 30 months.

Objective: The purpose of the present study was to investigate caries in a sample of young children in Brazil.

Methods: A prospective longitudinal study of dental caries was carried out on a sample of 186 children aged from 12 to 30 months in Feira de Santana, Bahia, where the water supply is optimally fluoridated. The sample was composed of children accompanied by their mother or guardian and was part of a public health child care programme.