סקירת ספרות ותיאור מקרה קליני - (Molar Incisor Hypomineralization) MIH

Molar-Incisor Hypomineralization (MIH) is a clinical situation of hypomineralization of permanent molars (mostly first molar) and of the buccal surface of permanent incisors. The insult occurs during the first two years, based on the finding that the gingival third of first permanent molars affected by MIH is always intact. It was detected in 2.4-40% of children in different countries. MIH was observed in siblings and in parents and children, and a genetic predisposition was suggested, together with local insults like high fever, childhood diseases and more.DD, a nine-year-old boy showed extensive enamel breakdown in four permanent molars and marked white lesion on the buccal surface of upper right central, together with an uncomplicated crown fracture and on buccal surface of second lower left centrals. The treatment included occlusal restorations using glass-ionomer cement (Fuji IX by GC, Japan) and class IV restoration using composite (Gradia A2 by GC, Japan) that covered the buccal surface of tooth #11. Two years follow-up showed very good results. The consideration of amalgam or composite materials for restorations of MIH molars is wrong since amalgam or composite restoration margins should be placed in fully mineralized enamel. GIC can be used with high success in MIH molars when enamel breakdown occured.