Наукові праці. Кафедра пропедевтики терапевтичної стоматології
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Перегляд Наукові праці. Кафедра пропедевтики терапевтичної стоматології за Автор "Dvornyk, A. V."
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Документ Clinical features of influence of different groups of bleaching agents in the oral cavity at different periods after the end of the treatment(Полтавський державний медичний університет, 2022) Dvornyk, A. V.; Dvornyk, V. M.; Vodoriz, Y. Y.; Skripnykov, P. M.; Tkachenko, I. M.; Дворник, Анна Валентинівна; Дворник, Валентин Миколайович; Водоріз, Ярослав Юрійович; Скрипников, Петро Миколайович; Ткаченко, Ірина МихайлівнаThe purpose of the study was to assess the clinical changes in the oral cavity after using teeth bleaching systems of different compositions. Totally 65 patients were examined. All patients were 20 to 40 years old and had no severe dental and somatic pathology. This clinical study evaluated the effectiveness and side effects of two products for teeth bleaching. The difference in clinical indicators after the bleaching procedure with the selected gels on the microelement structure of oral liquid was detected. We noticed a significant difference in calcium and sodium indices in the oral fluid. Teeth bleaching agents cause tooth sensitivity manifested by changes in the oral fluid viscosity, pH, and the micronutrient composition. Depending on the bleaching agent used, the teeth bleaching procedure should be completed with remineralizing therapy.Документ Effects of professional oral hygiene and teeth whitening on the microelement composition of enamel(Aluna Publishing, 2023) Dvornyk, A. V.; Vodoriz, Ya. Y.; Pysarenko, O. A.; Marchenko, I. Y.; Tkachenko, I. M.; Дворник, Анна Валентинівна; Водоріз, Ярослав Юрійович; Писаренко, Олег Анатолійович; Марченко, Ірина Ярославівна; Ткаченко, Ірина МихайлівнаAim: The objective of this study is to investigate the impact of professional teeth cleaning and the substances used in modern dentistry for whitening on the microelement composition of tooth enamel. Materials and methods: To study the morphology and microelement composition of the enamel, scanning electron microscopy was performed using the MiraLM microscope equipped with a Schottky field emission electron gun from Tescan. Results: A comparative analysis between the areas subjected to mechanical cleaning and those where it was not applied revealed a significant difference in the research results, particularly in carbon, which changed from 25.16±1.04 to 32.02±1.8. An analysis of the enamel’s chemical composition before and after whitening revealed a decrease in carbon from 45.91±1.20 to 42.46±1.74. The change in phosphorus content was determined to be from 9.77±0.39 to 9.56±0.75. A decrease in calcium from 15.96±0.64 to 15.21±1.22 and magnesium from 0.07±0.01 to 0.01±0.01 was also observed. Conclusions: Professional dental hygiene does not have a direct impact on the microelement composition of enamel, such as the levels of calcium, phosphorus, fluoride, and other microelements. However, it can have an indirect and temporary influence due to the use of abrasive materials that affect dental deposits, pellicle, and the surface layer of enamel. Teeth whitening can affect the microelement composition of enamel, but these changes are mostly temporary and associated with processes of demineralization/remineralization and oxygenation.Документ Experimental study of changes in the chemical composition of tooth enamel when using hydrogen peroxide as the main chemical component in professional bleaching(Aluna Publishing, 2022) Dvornyk, A. V.; Tkachenko, I. M.; Pysarenko, O. A.; Vodoriz, Y. Y.; Dvornyk, V. M.; Brailko, N. M.; Дворник, Анна Валентинівна; Ткаченко, Ірина Михайлівна; Писаренко, Олег Анатолійович; Водоріз, Ярослав Юрійович; Браїлко, Наталія Миколаївна; Дворник, Валентин МиколайовичObjective: The aim: To study changes in the chemical composition of the tooth enamel surface when using hydrogen peroxide as a chemical component of the whitening system in combination with professional oral hygiene. Patients and methods: Materials and methods: To achieve this goal, during the study, we studied the enamel of the teeth of the frontal area, which was removed for orthodontic and orthopedic indications. The age of the patients whose teeth were examined ranged from 18 to 44 years. In the experiment, we studied the chemical structure of enamel by a method thatcovered the selection of the study area, with the designation of areas for microanalysis, and subsequent elemental analysis in selected areas of the enamel. Results: Results and conclusions: Analyzing the results of this study, we can make assumptions about the impact of professional dental hygiene on the procedure of photo-whitening teeth based on 35% hydrogen peroxide gel and its subsequent impact on theother clinical indicators, which will depend on the characteristics of functional and structural resistance of the enamel.