Mineralization differences between human deciduous and permanent enamel measured by quantitative microradiography

A comparative study of the susceptibility of cut and uncut enamel to erosive demineralization

“…To our knowledge, this is the first laboratory report on the superficial enamel hardness of uncut human enamel samples. Increased surface hardness values in the uncut samples could be due to the increased mineral content, and density caused by post eruptive maturation in the enamel surface compared with the subsurface enamel 24,[27][28][29] . These hardness results suggested the importance of the superficial enamel layer of natural (uncut) enamel and is an important layer to resist acidic challenge, either that from erosive changes or caries.…”

The effect of prism orientation on the indentation testing of human molar enamel

“…The chemistry varies in mineral, organic, and water content as one moves from the occlusal surface of the enamel to the DEJ. Many researchers have characterized the chemistry of human enamel as a function of position, 11,12,13,14,15,16 and in some cases the results have been correlated with spatial variations in the mechanical properties of enamel. 10,15,17,18,19 Habelitz et al 20 showed Young's moduli and hardness were lower in the inter-rod enamel than in the head of the enamel rod.…”

Observations of mineralised tissues of teeth in X-ray micro-computed tomography

“…2) [4]. The degree of variability in the concentration of minerals within the hard tissues of healthy teeth in different individuals, in different teeth, and even within a single tooth is known, as well as the relationship between the degree of mineralisation of tooth enamel and caries susceptibility [28]. Previous studies had shown that specific weight of the deciduous teeth enamel was lower than of the permanent teeth enamel and the level of mineralisation of deciduous teeth enamel had an increasing gradient from the enamel-dentin junction to the outer enamel surface [26,28].…”

“…The degree of variability in the concentration of minerals within the hard tissues of healthy teeth in different individuals, in different teeth, and even within a single tooth is known, as well as the relationship between the degree of mineralisation of tooth enamel and caries susceptibility [28]. Previous studies had shown that specific weight of the deciduous teeth enamel was lower than of the permanent teeth enamel and the level of mineralisation of deciduous teeth enamel had an increasing gradient from the enamel-dentin junction to the outer enamel surface [26,28]. The most recent research based on the results of microtomography, developed to measure the concentration of minerals in bones and teeth with accuracy higher than 1% and a resolution of 5-30 microns, confirms a large variation in the enamel mineralisation level and the gradient of concentrations between the enamel-dentin border and an outer surface of enamel in healthy milk molars of different persons [3,10,30].…”

“…Another application of micro-CT is the assessment of different techniques of cavity preparation [26][27][28]. Currently in the restorative dentistry, the principle of economical preparation of the carious cavity tissue is important.…”