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Biomedical subjects

V B Nedoseko

Publications and source records attributed to V B Nedoseko.

10 recordsLinked to original sources
PubMed2003

[Study of thermal stability of intact dental enamel in subjects with different levels of caries resistance].

Thermal stability of intact dental enamel was compared by combined TH-DTH-DTA analysis in subjects with different caries resistance. Thermal stability was found to depend on the presence and degree of organic and inorganic components stability. The content of organic phase virtually was virtually the same in samples with different levels of resistance, which was confirmed by the fact that oxidative destruction of organic substances in intact dental enamel took place at the same temperatures in samples of all resistance levels.

Adolescent↗
PubMed2002

[Characteristics of dental enamel and its resistance to caries].

Systematical research of basic texture characteristics (specific surface area, specific volume and size of micro-, meso- and macropores, porosity) of intact dental enamel of persons with various degree of resistance to caries has been performed using methods of adsorption and Hg-porosimetry. Studied objects have been shown to be small-porous (total porosity epsilon = 4-6%), roughly-dispersed (specific surface S6ET = 0.7-1.5 m2/g) materials. Regularities of changes of specific surface and porous structure in researched samples have been established. More mesoporous enamel structure has been shown to form in the series of samples varying from high level of resistance to very low level. Meanwhile intact dental enamel has the same degree of macroporosity irrespective of the level of its resistance to caries. Micropores within the samples have been established to be heterogenous and their volume to be very insignificant (2-4 x 10(-9) m3/g). Substantiation of various degree of resistance of intact dental enamel to carious process has been suggested within the framework of structurally-geometrical approach.

Adolescent↗