The Effect of Sintering Temperature on Vickers Microhardness and Flexural Strength of Translucent Multi-Layered Zirconia Dental Materials

This study evaluated the effects of sintering temperature on Vickers microhardness and three-point flexural strength values two multi-layered zirconia materials. Multi-layered systems with four distinct layers were selected: DD cube ONE ML (4Y-TZP) cubeX2 (5Y-TZP). In total, 96 plate-shaped A2-shade specimens obtained using individual these The then divided equally into batches three different temperatures (1300, 1450, 1600 °C), was assessed. Another group 72 bar-shaped prepared from same These similarly temperatures, SEM used to conduct fractographic analyses. data analyzed SPSS 24.0 software a p-value < 0.05. 4Y-TZP higher than those 5Y-TZP at all temperatures. A significant difference found in between groups sintered (p 0.05). highest 1450 °C not significantly > type ceramic material affected strength. However, did affect microhardness.