Наукові праці. Кафедра пропедевтики ортопедичної стоматології
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Перегляд Наукові праці. Кафедра пропедевтики ортопедичної стоматології за Автор "Dzetsiukh, Tetiana"
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Документ Characteristics of metal alloys properties for dental casting after their repeated remelting(Aluna Publishing, 2021-10) Hasiuk, Petro; Kindiy, Viktor; Radchuk, Volodymyr; Kindiy, Dmytro; Dzetsiukh, Tetiana; Korol, Dmytro; Гасюк, Петро Анатолійович; Кіндій, Віктор Данилович; Кіндій, Дмитро Данилович; Король, Дмитро МихайловичThe aim: To study clinical and experimental substantiation of the possibility of using cobalt-chromium and nickel-chromium alloys after repeated remelting for non-removable one-piece prosthetics. Materials and methods: Experimental studies of Remanium GM 700 and Remanium CSe dental alloys have been carried out. To study the physical and mechanical properties of alloys, samples were obtained by sequential six-fold remelting in a Tiegelschleuder TS casting dental unit manufactured by Degussa. All samples were subjected to chemical analysis and metallographic studies by methods generally known in metallurgy, which included studies of microhardness, elasticity, tensile deformation, bending deformation and alloy structure after repeated remelting. Results: Thus, the obtained results of the chemical, physicomechanical and structural properties of the remelts indicate that the Remanium GM 700 and Remanium СSe alloys can be reused many times for the manufacture of one-piece orthopedic structures in that they are identical with certified alloys. Conclusions: In terms of structure, qualitative and quantitative composition of elements, physical and technological properties, the Remanium GM 700 and Remanium CSe alloys have been repeatedly remelted meet the requirements of materials used in biologically active environments of the patient’s body. High-quality and cost-effective remelted multiple times Remanium GM 700 and Remanium CSe alloys can be recommended for use in practical prosthetic dentistry six times.Документ Comparative analysis of endurance cements for the fixation of non-removable orthopedic constructions under the action of cyclic compression(Aluna Publishing, 2022-04) Hasiuk, Petro; Odzhubeiska, Olga; Vorobets, Anna; Korol, Dmytro; Dzetsiukh, Tetiana; Kindiy, Dmytro; Гасюк, Петро Анатолійович; Оджубейська, Ольга Дмитрівна; Воробець, Анна Богданівна; Король, Дмитро Михайлович; Дзецюх, Тетяна Ігорівна; Кіндій, Дмитро ДаниловичThe aim: To conduct studies of the physical and mechanical properties of cements for fixation, namely the duration of cement samples under cyclic compression. Materials and methods: We have conducted a study of 6 cements for permanent fixation of fixed structures of dentures. To study the duration of cements under cyclic compression, a special stand was used, which allows testing samples for cyclic compression with a load frequency of 5.4 Hz or 324 cycles per minute and an increase in compression in a cycle from 10 to 100 kg/s. Results: Comparative analysis of the mechanical properties in compression of dental cements for permanent fixation showed that the obtained deformation curves differ significantly in each of the cement samples used in the study. Conclusions: The results of the study of the physical and mechanical properties of cements indicate that the most optimal complex of properties is possessed by the zincphosphate cement Unitsem and glass ionomer cements Cemion and Fuji I. This is most clearly confirmed when studying the duration of cement samples under cyclic compression, which simulates a real situation.Документ Comparative evaluation of histotoxicity indicators of metal alloys for the manufacture of metal ceramic dental constructions(Aluna Publishing, 2021-09) Hasiuk, Petro A.; Ramus, Mykhailo; Vorobets, Anna; Tkachenko, Iryna; Dzetsiukh, Tetiana; Kalashnikov, Dmytro; Rosolovska, Svitlana; Гасюк, Петро Анатолійович; Рамусь, Михайло Олександрович; Калашніков, Дмитро Вікторович; Ткаченко, Ірина МихайлівнаThe aim: To carry out a comparative assessment of metal alloys for the manufacture of metal-ceramic constructions of dentures by determining the indicator of their histotoxicity. Materials and methods: To identify the effect of metal alloys on cobalt and nickel bases on the tissue of organism, we carried out an experimental-morphological study of standard samples of metal alloys “Shot-alloy”, “Remanium-2000”, “Cerium”, “Dent-NCB”, “Cellite-N”. Results: A careful histological analysis of the capsules formed around the metal alloy samples during two periods of the experiment showed that the healing time of the subcutaneous tissue was not the same. The most complete healing, that is, the formation of mature fibrous connective tissue, occurred during the implantation of the cobalt based alloy “Remanium-2000” and the capsule formed at the end of the experiment around the implanted sample from the “Shot-alloy” alloy, and during the implantation of the “Cerium” alloy, healing the wound surface and the formation of a connective tissue capsule occurs fully than in previous cases. Conclusions: The analysis of the performed experiment testifies in favor of the point of view that the speed and quality of healing of damaged subcutaneous tissue upon the introduction of implanted research alloys depend largely on the individual chemical components that make up the alloys, or on their combination.