No abstract

По опросам пациентов, на первом месте среди при-чин недовольства проведенным лечением стоит неудов-летворительная эстетика [1,5]. Определенную трудность у врачей вызывают реставрации зубов у пациентов среднего и пожилого возраста. Несмотря на обилие материалов, су-ществующие методики реставраций не универсальны, нет четко разработанного алгоритма нанесения слоев компо-зита, особенно эмалевого слоя. Кроме того, существую-щая система цветового планирования реставраций не дает ответа на один из главных вопросов -за какие параметры отвечает дентин, а за какие эмаль [2].Общеизвестно, что оптические параметры твердых тканей зуба, в частности эмали, напрямую связаны с ее морфологией и происходящими в ней возрастными физи-ологическими процессами. Данные процессы часто встре-чаются в литературных источниках под термином «мине-рализация эмали» [3]. Однако данный термин нам пред-ставляется не совсем корректным ввиду того, что процес-сы минерализации являются сугубо химическими, а изме-нение кристаллической структуры гидроксиапатита The in vitro study by means of complex laboratory techniques including X-ray faze analysis, infrared spectroscopy, scanning electron and atomic force microscopy defined age-related physiological mineralization process as a shift of the structural enamel unit -nanocrystalline hydroxyapatite crystals -To microcrystal phase. Relevant anatomical sites with age-dependent enamel optical characteristics corresponding to certain ratio of hydroxyapatite phases and the compliance of their color characteristics to composites enamel layers were revealed.

Background. The violation of the marginal tightness of composite restorations and the recurrence of the carious process remains relevant to this day, especially in persons with a decompensated form of caries activity. In this regard, of undoubted interest is the possibility of a wide preventive effect of individual oral hygiene products with a remineralizing effect, particularly those containing brushite crystals. Brushite crystals have unique adhesive properties and tropism to hydroxyapatite crystals on the enamel surface. The principal mechanism of action of the RemarsGel system is a chemical reaction that occurs when calcium nitrate from tube # 1 is mixed with ammonium hydrogen phosphate from tube # 2, as a result of which a brushite crystal is formed on the surface of the teeth. Material and methods. From a clinical point of view, this study compared the clinical efficacies of a standard prophylaxis program (using traditional fluoride-containing personal oral hygiene products) of carious recurrence in patients with a high degree of caries activity and a developed program for using a natural two-component complex to strengthen and remineralize RemarsGel enamel. The effectiveness of the applied technique was monitored using clinical research methods immediately after sanitation and 1, 12, and 36 months after it. Results. The high efficiency of brushite crystals was established in terms of preventing violations of the integrity of the enamelcomposite joint, which has a direct and immediate effect on the recurrence of the carious process. A statistically significant difference in the Ryge criteria was found between group Nos. 1 and 2. These results were confirmed by scanning electron microscopy and statistical processing of the research results. Conclusion. A scientifically based indication of the intended use of the system must be added to the list of main indications for use in the presence of a significant amount of adhesive restorations in the oral cavity, made using direct and indirect methods, especially with decompensate caries.