Abstract

Objectives: The bond strength and elongation amount of different soft lining materials were evaluated in the current study. Material and Methods: Following the flasking of wax specimens in dental stone, wax removal and processing of polymethylmetacrylate (Meliodent) denture material, 3 different soft relining materials (Molloplast-B, Mollosil Plus, Vertex Soft) were placed within the space prepared in the center of polymethylmetacrylate (PMMA) specimens ( n =8). Using a crosshead speed of 5mm/min, tensile test was continued until failure was occurred. Mean tensile strength (MPa) and mean elongation (mm) was measured. Data was analyzed using one-way ANOVA and Tukey multiple comparison test ( α =0.05). Results: Significant differences were found among the tensile bond strength results ( p 0,05). Uzama miktari akrilik esasli yumusak astar materyali icin 6 (2,1) mm, otopolimerize silikon materyali icin 7,1 (1,8) mm, isi ile polimerize olan silikon materyali icin ise 4,8 (2,3) mm bulunmustur. Sonuc: Isi ile polimerize olan akrilik ve silikon esasli yumusak astar malzemelerinin baglanma dayanimlari degerleri birbirine cok yakindir. Otopolimerizan silikon esasli yumusak astar materyalinin baglanma dayanimi daha dusuktur. Gruplarin uzama miktarlari acisindan bir fark bulunamamistir. Anahtar kelimler: Yumusak astar, kaide materyali, baglanma dayanimi, uzama miktari

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