Molar-Incisor Hypomineralization (MIH) : prevalence, etiology and medical practice - ROS - 2016 - Tome 45 - N°3

The term ''Molar Incisor Hypomineralisation'' or ''MIH'' refers to a hypomineralization of systemic origin affecting one to four permanent first molars, sometimes associated to lesions of the permanent incisors (Weerheijm, 2001, 2003, 2004).

Lesions of the second deciduous or primary molars as well as lesions of the cuspal tip of the definitive or permanent canine have been described in the literature (Weerheijm, 2001; Willmott, 2008).
A recent prospective epidemiological study showed that when the lesion of the second temporary molars is severe, there is a greater risk of developing MIH.
Knowing this, the primary second molars may be used as benchmarks to foresee possible MIH (Elfrink et al., 2012).

A remarkable characteristic of MIH is the absence of a symmetry; hypomineralization lesions vary according to the size and the location of the affected teeth (fig. 1a, b).
However, when the lesion is severe, there is a greater risk that the contralateral tooth gets affected too (Weerheijm, 2004; Calderara, 2005).

Agenda