Mechanical Properties of Zirconia/Alumina Nano-Composite after Soaking in Various Water-Based Conditions

Abstract:

Yttria stabilized tetragonal zirconia polycrystals (Y-TZP) have been applied to dental crown and bridges. Whereas, to further improve its mechanical strength, the zirconia/alumina nano-composite stabilized with cerium oxide (Ce-TZP/Al2O3 nano-composite) was developed. In the present study, biaxial flexure strength, fracture toughness and hardness were determined before and after soaking in water-based conditions and the possibility of application to all ceramic dental restorations was discussed. In comparison to Y-TZP, Ce-TZP/Al2O3 nano-composite has quite high flexure strength and fracture toughness along with satisfied durability for LTAD in various water-based conditions encountered in dentistry. Therefore, it is concluded that the nano-composite can be safely applied to dental restoratives such as all-ceramic bridges.

• Periodical: Key Engineering Materials (Volumes 309-311)
• Pages: 1219-1222
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.309-311.1219
• Online since: May 2006
• Authors: Seiji Ban, Masahiro Nawa, Y. Suehiro, H. Nakanishi
• Keywords: Degradation, Dental Restoration, Mechanical Property, Zirconia

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