Mineral density of hypomineralised enamel

An approach to normalizing micro-CT depth profiles of mineral density for monitoring enamel remineralization progress

“…These artifacts were troublesome to evaluate actual mineral density in the lesion. To convert CT intensity into mineral density, apatite phantoms are generally used 2,9,12) . However, it is not easy to obtain reliable and long-term usable phantoms covering wide range of mineral density because of the diffi culty to prepare them.…”

Molar Incisor Hypomineralization: Morphological, Aetiological, Epidemiological and Clinical Considerations

“…It justifies the porosities exhibited in the subsurface (Jalevik & Noren, 2000) because albumin degradation may be a prerequisite for maximal crystal growth in the maturation stage of enamel. (Farah et al, 2010b, Farah et al, 2010c, Mangum et al, 2010b The presence of excessive albumin seemed to be promote KLK4 inactivity resulting in enamel with elevated protein content and reduced mineral content. In cases of MIH with post-eruptive breakdown, on the exposed surface there is a subsequent protein adsorption on the exposed hydroxyapatite matrix.…”

Molar incisor hypomineralization

“…The mechanical properties, hardness, mineral density and modulus of elasticity of the hypomineralized enamel in MIH teeth have lower values compared with normal enamel (Suckling et al 1989;Mahoney et al 2004a, b;Jälevik et al 2005;Xie et al 2007Xie et al , 2008Farah et al 2010b). The lower values may explain why the enamel surface on a tooth with MIH often collapses and fractures under occlusal load.…”

“…The SkyScan 1172 (SkyScan N.V., Kontich, Belgium), XMCT system was used for scanning the teeth (Cha et al 2009;Farah et al 2010b;Sabetrasekh et al 2010;Versiani et al 2011). The parameters used were: camera pixel size 9.07 μm, source voltage 74 kV, source current 120 mA, image pixel size 15.80 μm, aluminum+copper filter, rotation step 0.360 o , 360 o rotation, frame averaging 8, geometrical correction, flat field correction, and median filtering on.…”