Prevalence and Severity of Molar Incisor Hypomineralization in Brazilian Children.

The purpose of this study was to evaluate the prevalence, severity, and distribution of molar incisor hypomineralization (MIH) and its association with socioeconomic characteristics among eight-year-old students from public schools in Petrópolis, Rio de Janeiro, Brazil. This cross-sectional study evaluated 450 eight-year-old Brazilian children. A questionnaire was used to assess socioeconomic factors (family income, maternal education, and person per household).