Assessing the Prevalence of Molar-Incisor Hypomineralisation among School Children in a North Indian District

INTRODUCTION: Molar Incisor Hypomineralisation (MIH) is a dental condition which affects the first permanent molars ranging from white opacities to complete breakdown on the teeth and is considered as a matter of global concern.  AIM: To assess the prevalence of MIH in school children aged 8-12 years in District Bulandshahr, Uttar Pradesh, India. MATERIALS AND METHOD: This cross-sectional study was conducted by examining 793 school children aged 8-12 years in various schools. ental examinations were conducted by four standardized examiners and four recording assistants who entered data in a pre-tested and pre-validated proforma. MIH was clinically identified by the ten-point scoring criteria given by European Academy of Pediatric Dentistry (EAPD) 2011. Data was analyzed using SPSS version 24.0 and the student’s t-test and multivariate logistic regression. RESULTS: Out of 793 children, 186 were diagnosed with MIH (23.5%) with its  prevalence reported to be more in boys (102, 54.8%) in comparison to girls (84, 45.2%). The most commonly affected tooth was the mandibular left first permanent molar (22.4%). There was a statistically significant difference reported between gender (p=0.03) and maxillary and mandibular molars (p=0.02), whereas there was no significant difference among MIH involvement on the site (right and left). CONCLUSION: As per the data suggested by the present study, it is important that students be screened regularly for the same so that they can be provided early and prompt treatment.