The Impact of the Sintering Protocol on the Mechanical Properties of Hydrothermally-aged High-translucent Zirconia Materials

Speed sintering and low-temperature decomposition LTD can lead to a degradation of the physical and mechanical properties of zirconia, potentially compromising its durability in clinical applications. An optimal sintering duration seems to enhance mechanical strength by preserving a high content of the tetragonal phase, thereby potentially extending the clinical lifespan. This situation underscores the necessity for more extensive research regarding the application of next-generation zirconia ceramics in clinical environments. Conventional sintering preserved higher flexural strength and phase stability compared to high-speed sintering under LTD conditions, and therefore appears more favorable for long-term performance.