The factors to improve the strength of zirconia all-ceramic veneering porcelain.

本文研究了不同的框架材料、瓷烧成温度和升温速率对氧化锆全瓷贴面瓷断裂韧性的影响，并按照ISO15732标准对瓷的断裂韧性进行了评价。结果表明，ZAC框架厚度和烧成温度对贴面瓷断裂韧性的影响无显著性差异，而升温速率对贴面瓷断裂韧性有显著性影响。

We investigated how various frame materials, porcelain firing temperature and heating rate influenced the fracture toughness of the veneer porcelain used for zirconia all-ceramic restorations.The fracture toughness was evaluated according to the ISO 15732 standard. The data were analyzed using 2-way ANOVA and the Tukey-Kramer HSD test.The results suggest that the effects of the ZAC frame thickness and firing temperature on the fracture toughness of the veneer porcelain were not significantly different; however, the heating rate significantly influenced the fracture toughness.