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Quintessence Publishing: Journals: IJP
The International Journal of Prosthodontics

Edited by George A. Zarb, BChD, DDS, MS, MS, FRCD(C)

ISSN 0893-2174

March/April 2011
Volume 24 , Issue 2

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Radiopacity of Zirconia-Based All-Ceramic Crown Systems

Francisco Martínez-Rus, DDS, Dr Odont/Ana M. García, DDS/Antonio H. de Aza, PhD/Guillermo Pradíes, DDS, Dr Odont

Pages: 144–146
PMID: 21479282

The aim of this study was to evaluate the radiopacity of the core and veneer ceramics in four zirconia-based crown systems: In-Ceram Zirconia, In-Ceram YZ, Procera Zirconia, and Cercon. Two-millimeter-thick restoration slices were prepared and digitally radiographed alongside an aluminum stepwedge. The grayscale data were converted into millimeters of aluminum by an image analysis program. The two-way analysis of variance test detected significant differences with respect to all-ceramic system, layer ceramic, and the interaction of the two factors (P = .0001). All materials presented radiopacity values above the minimum recommended by the International Organization for Standardization. Int J Prosthodont 2011;24:144–146.

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