Objective: To investigate the prevalence and severity of molar incisor hypomineralization (MIH) in a group of school children aged 8-12 years in Suez Canal sector cities.
Subjects and Methods: A sample of 1312 students aged 8-12 years were selected from governmental schools in Ismailia, Port Said, and Suez cities. MIH was diagnosed clinically based on the diagnostic criteria established by the European Academy of Pediatric Dentistry (EAPD) 2003.
Results and conclusion: The prevalence of MIH varied widely among the 3 cities, with an average of 9.98 %.The severity of MIH was higher in girls 32.14% than boys 5.33%. The most prevalent defect reported in this study was opacities.