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Volume 21 , Issue 3
May/June 2008

Pages 237240

Short Communication: Effect of Veneering Method on the Fracture and Bond Strength of Bilayered Zirconia Restorations

Moustafa N. Aboushelib, DDS, PhD/Marcel de Klera/Jef M. van der Zel, PhD/Albert J. Feilzer, DDS, PhD

PMID: 18548963

This study evaluated the fracture strength and microtensile bond strength of a new computer-aided design (CAD) veneering method for zirconia frameworks. A new CAD/computer-assisted manufacture system was used to fabricate a resin replica of the esthetic ceramic required to veneer a zirconia framework. The replicas were processed using press-on technology. Identical manually layered zirconia specimens served as a control (n = 18; a = .05). Statistical analysis revealed that the fracture strength (442.8 25 N) and microtensile bond strength (26.6 2 MPa) of CAD-veneered zirconia were significantly higher (P < .001) compared to the control (346 24 N and 15.1 1 MPa, respectively). CAD veneering is a reliable method for veneering zirconia frameworks. Int J Prosthodont 2008;21:237240.

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