Do enamel and dentine caries at 5 years of age predict caries development in newly erupted teeth? A prospective longitudinal study.

To explore caries development in children from 5 to 12 years of age, and to study whether enamel caries and dentine caries at 5 years of age could predict caries prevalence at 12 years of age, controlled for child characteristics. The study included 3282 children examined at 5 and 12 years of age. Data were collected by clinical examination and questionnaire. Enamel and dentine caries were registered at surface level. Data were tested by -test and analysed by bi- and multivariate logistic regression. The study was ethically approved. In 5-year-olds, 15% of the children had dentine caries experience and 21% had enamel caries. In 12-year-olds, 32% had dentine caries experience and 47% had enamel caries. Children with dentine caries experience at 5 years of age had at 12 years of age developed more surfaces with enamel caries (mean 2.8, SD 4.2) and dentine caries experience (mean 1.8, SD 2.5) than other children ( < .05). Dentine caries experience at 12 years of age was associated with having only enamel caries (OR 1.6, CI 1.2-2.0) and dentine caries experience (OR 3.2, CI 2.6-3.9) at 5 years of age. Family status and parental education were related to caries development. Children with caries in primary teeth continued to be caries risk children during the mixed dentition period. In addition to dentine caries experience, enamel caries in primary teeth was a predictor for caries development in young permanent teeth and may be used to improve the caries risk assessment.