[Caries-free dentitions in pre-school children and elementary school pupils in Basle during the study year of 1974].

Already in the last two years, the increasing percentage of caries-free elementary schoolchildren of Basel could be observed compared to the years before water fluoridation began. This increase could be confirmed this year, from examinations of over 95% of the children born 1964 to 1967, and of over 70% of the two kindergarten-years 1968 and 1969.