Employing dmft score as a risk predictor for caries development in the permanent teeth in Japanese primary school girls.

The aim of this study was to examine the significance of evaluating dmft for predicting the incidence of permanent teeth caries in Japanese girls. The subjects were two birth cohorts in a Primary girls' school: cohort I composed of 45 girls born in 1981 and 1982 and cohort II composed of 53 girls born in 1989 and 1990. In both cohorts, there was a significant correlation between the dmft score in the first grade and the DMFT score in the sixth grade.