Molar Incisor Hypomineralisation (MIH): A Review

Abstract

Molar incisor hypomineralisation (MIH) is a highly prevalent developmental defect of one or upto four first permanent molars and permanent incisors. Its clinical implications are hypersensitive teeth, rapid progression of caries, impairment of mastication due to rapid attrition and aesthetic impairment which lead to complexity in treatment planning, poor prognosis of the restorations, difficulty in achieving pain control during treatment and behaviour management problem. Clinically the defect presents as opaque lesion varying in colour from white to yellow or brown and with a sharp demarcation between the affected and sound enamel to post eruptive enamel breakdown. The main objective of this paper is to review the etiopathogenesis, prevalence, clinical features, diagnostic features and treatment approach.