Abstract
Objective: to study the chemical composition of the surface layer of enamel in dental caries depending on the activity of carious lesions. Material and methods. The chemical composition of the surface layer of enamel in teeth samples with arrested (n = 15) and active (n = 15) caries was studied using the high resolution SEM «Mira» by the firm «Tescan» (Czech Republic) with the micro spectral analyzer «INCA Energy 350» of the firm «Oxford Instruments Analytical» (Great Britain). Results. We have revealed reliable increases in carbon, oxygen and other light elements in the surface layer of the enamel at the area of active carious lesions in comparison with intact enamel and arrested carious lesions; significant decreases in the content of calcium, phosphorus, ratio of Ca / P coefficient for the surface layer of the enamel of active carious lesions in comparison with intact enamel and arrested carious lesions. We have revealed no reliable differences in the content of C, O, Ca, P, CI in the surface layer of intact enamel and that at the area of arrested no cavity caries.
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