Molar Incisor Hypominerilization

Molar Incisor Hypomineralization (MIH) is a common developmental condition affecting primarily one or more first permanent molars. The central incisors may be affected as well, but this usually occurs to a lesser extent

Currently, the etiology of MIH is still unknown. Some correlations with prenatal, perinatal and postnatal illness, exposure to antibiotics or chemicals such as dioxin, bisphenol A and polychlorinated biphenyl have been described, but sufficient evidence is still lacking.



  1. Hypersensitivity and decreased response to local anesthesia
  2. Rapid caries progression
  3. Posteruptive breakdown

Clinical management of MIH is challenging due to:

  1. Hypersensitivity and rapid development of dental caries in affected teeth
  2. Difficulty in achieving anesthesia
  3. Limited cooperation of the young child
  4. Repeated marginal breakdown of restorations
  5. Often, an increased number of dental visits is required