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Edge Chipping Of Translucent Zirconia, Joseph D. Flask, Geoffrey A. Thompson, Maharaj Singh, David W. Berzins
Edge Chipping Of Translucent Zirconia, Joseph D. Flask, Geoffrey A. Thompson, Maharaj Singh, David W. Berzins
School of Dentistry Faculty Research and Publications
Statement of problem
More translucent dental zirconias have been developed by incorporating the cubic phase and reducing the tetragonal phase content that undergoes transformation toughening, leading to reduced mechanical properties. Whether the clinically relevant mechanical property of the edge chipping toughness of the material is also reduced is unclear.
Purpose
The purpose of this in vitro study was to evaluate the edge chipping toughness and translucency of translucent zirconia, 3mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), and lithium disilicate.
Material and methods
Two translucent zirconia products, Katana and Lava Esthetic; one 3Y-TZP, Lava Plus; and one lithium disilicate, IPS e.max Press …