Prevalence of Molar-Incisor-Hypomineralisation among school children in four German cities.

Background: A wide range for the prevalence of Molar-Incisor-Hypomineralisation (MIH) has been found in regional studies.

Aim: The aim of this study was to determine the prevalence of MIH in Germany and to compare the findings with other studies.

Design: In the compulsory dental school examination, the first permanent molars, permanent incisors, and second primary molars were examined according to EAPD criteria in 2395 children (8.