[Experience in light-science teaching on courses of post-graduate education of stomatologists].
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Biomedical subjects
Publications and source records attributed to I K Lutskaia.
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The need in dental care was analyzed basing on the results of examinations of 1806 representatives of the older age groups. Only 1.6% of the examinees, however, needs to consult a dentist, the mean CDR (carious, decayed, removed teeth) index being 15.4, with a trend to an increase with age. The proportion of toothless subjects is high. A high incidence of carious teeth means that elderly and senile subjects are in need of all types of dental care. The diagnosis and treatment are difficult in this patient population because of age-specific changes in dental tissues.
Investigation of the human tooth enamel by means of interference contrast makes it possible to reveal certain peculiarities of the prismatic structure in various age groups. For example, in children the enamel has specific porosity of the superficial layers, that is peculiar for teeth with a delayed eruption. With age the enamel becomes more "homogeneous", amount and size of the pores decrease, aprismatic areas in the superficial layer are found more often. Erased teeth are characterized with formation of microdefects, destruction of prisms on the enamel surface and at the same time with increased mineralization of the subsuperficial layer. Thus, age changes of the enamel are of adaptive character--consolidation of structural elements promotes increasing resistivity of the teeth to influence of pathological factors.
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