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The purpose of this study was to evaluate the effect of different polymerization cycles on the flexural strengths and microhardness of two denture base materials (Meliodent and Paladent). Heat-polymerized acrylic resin specimens (65.0 mm long×10.0 mm wide×2.5 mm in height) were prepared using different short and long polymerization cycles. After the specimens had been polymerized, they were stored in distilled water at 37±1°C for 24 h. Flexural strength test was performed at a cross-head speed of 5 mm/min and Vickers microhardness was measured. Data were analyzed with a 1-way analysis of variance followed by Tukey test, and Student t-test (α=0.05). The flexural strengths and microhardness were significantly different between Meliodent and Paladent (p&lt;0.05). Significant differences were found among the polymerization cycles in terms of flexural strengths and microhardness (p&lt;0.05). Polymerization with G cycle may be suggested for Meliodent and H cycle may be suggested for Paladent.

Effect of polymerization cycles on flexural strengths and microhardness of different denture base materials