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Research Letters in Materials Science
Volume 2007 (2007), Article ID 69897, 5 pages
http://dx.doi.org/10.1155/2007/69897
Research Letter

Wear of MgO-CaO-SiO2-P2O5-F-Based Glass Ceramics Compared to Selected Dental Ceramics

1Metallurgical and Materials Engineering Department, Middle East Technical University, Ankara 06531, Turkey
2Department of Dentistry, Research and Training Hospital, Dumlupinar University, Kutahya 43270, Turkey

Received 26 August 2007; Accepted 28 November 2007

Academic Editor: Chun-Hway Hsueh

Copyright © 2007 Jongee Park et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Wear of a glass-ceramic produced through controlled crystallization of a glass in the MgO-CaO-SiO2-P2O5-F system has been evaluated and compared to various commercial dental ceramics including IPS Empress 2, Cergo Pressable Ceramic, Cerco Ceram, and Super porcelain EX-3. Wear tests were performed in accord with the ASTM G99 for wear testing with a pin-on-disk apparatus. The friction coefficient and specific wear rate of the materials investigated were determined at a load of 10 N and at ambient laboratory conditions. Microhardness of the materials was also measured to elucidate the appropriateness of these materials for dental applications.