The Translucency of Yttria-Stabilized Zirconia in Dental Crowns: A Review

Abstract:

Ceramics are increasingly popular in dental restoration after metal restoration has been found to be less esthetic. One such example is yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP). However, one of the challenges of this application is its insufficient translucency to ensure high esthetic restoration. This study reviews the effect of sintering parameters, primary particle size, microstructure homogeneity, and thickness of zirconia on its translucency. Several studies remarked that the thickness of the framework had the greatest effect on zirconia translucency. Thus, a rigorous thickness control is necessary. The consideration for optimal sintering parameters (sintering temperature and holding time) and the use of smaller particle sizes help in the densification and elimination of porosity in zirconia, which, consequently, improve its translucency. Finally, a homogeneous microstructure can reduce the light scattering effect in zirconia and increase its translucency. Identifying the factors that influence zirconia translucency can contribute to future research in improving the esthetic dental restoration.

• Periodical: Applied Mechanics and Materials (Volume 761)
• Pages: 436-440
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.761.436
• Online since: May 2015
• Authors: Chuin Hao Chin*, Andanastuti Muchtar, Masfueh Razali, C.H. Azhari
• Keywords: Dental Crown, Translucency, Y-TZP, Zirconia

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