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Information × Registration Number 0222U004901, 0121U108164 , R & D reports Title 621. Manufacture and clinical use of acrylic-free reinforced complete removable dentures in orthopedic dentistry popup.stage_title Head Rozhko Pavlo , к.мед.н. Registration Date 17-11-2022 Organization Odessa National Medical University popup.description2  The cobalt-chromium metal alloy was determined as optimal for the construction of the PP-metal frame-KHS composition (adhesion strength is (4.10.42)×102Ω). Conducted studies have shown that dental prostheses obtained on the basis of polypropylene are stable and do not undergo intensive aging (according to accelerated tests in a heat and moisture chamber) for a long time (up to 10 years). It was determined that a sharp difference of 160o-30o leads to an increase in the size of the spherulites, while the microhardness increases, the prosthesis becomes brittle due to the occurrence of internal stresses between the amphoric and crystalline regions. In the case of using a metal frame, due to the high thermal conductivity of the metal, the cooling of the polypropylene mass occurs much faster, which leads to an increase in the size of the spherulites. In this case, the microhardness of the prosthesis is high, and fragility is eliminated by the use of a frame. Product Description popup.authors Balykov Viktor V. Kushnir Mykola V. Lysenko Vladyslav V. Rozhko Pavlo D Rozumenko Vladyslav O. Rozumenko Mariia V. Cherednychenko Anzhela V. Shakhnovskyi Ihor V. popup.nrat_date 2022-11-17 Close