Uri Zilberman
Barzilai Medical University Center, Israel
Biography
Abstract
Molar Incisor Hypomineralization (MIH) is caused by disturbance during the initial calcification and/or maturation of the enamel of the affected teeth. It happens during the first two years after birth, for permanent molars or during the third trimester of pregnancy for primary molars. The characteristic features of MIH: opaque stains that vary in tone between white, yellow and brown, post-eruptive enamel breakdown, atypical restorations and/or extensive caries with opacities at the margins, sensitivity, tenderness and difficulty to treat. In Pre-Eruptive Intracoronal Resorption (PEIR), currently of unknown aetiology- the dentine underlying the enamel crown of still unerupted teeth is progressively resorbed and replaced by soft granulomatous tissue leaving only a thin layer of unsupported enamel. The fragile enamel in such teeth fractures soon after eruption exposing the dental pulp to oral pathogens. In the absence of early intervention, the extent of destruction of the mineralized tissues resulting from PEIR, necessitates extraction in some 50% of affected teeth.