[Oral findings in comparison in Prague and Rostock school-children].

In 1987, 12 years after fluoridation of drinking water, caries prevalence of Prague school-children is very low, and the goals of WHO have already been reached and undercut. Children from Rostock, where no fluoridation of drinking water was introduced, have an unchanged high caries experience in 1985. Degree of treatment and percentage of successfully treated children show only little differences in both towns. These results emphasize the demand for an introduction and/or a continuation of an effective caries prevention in children once more.