Evaluation of Some Material Properties of Cercon Fixed Partial Dentures
Yaser M. Alkhiary
Oral and Maxillofacial Department, King Abdulaziz University, Faculty of Dentistry, , Jeddah, Saudi Arabia
Abstract: Purpose: Metal-ceramic fixed partial dentures (FPDs) are limited in actual application due to the aesthetic appearance; in fact, they do not satisfy the current market demands for increased aesthetics. In contrast, new ceramics, such as Cercon®, meet these market needs for FPDs. The use of Cercon FPDs has increased substantially to avoid the aesthetics problem associated with metal-ceramic restorations. Methods:The present study was designed to evaluate a new generation of zircon-ceramic material (i.e., Cercon®) recommended for three- and four-unit FPDs. More specifically, marginal accuracy, fracture strength, and the nature of interaction between the resin cement and the zirconia core material were investigated. Results: The results revealed no significant difference in the marginal gap between the premolar and molar in the case of three- and four-unit FPD. However, a significant difference was observed in the interaction of the gap distance between the molars in three- and four-unit FPDs. Moreover, the fracture strength was increased by sandblasting the Cercon® material. Conclusions: In this in-vitro study, we concluded that Cercon FPDs can be easily milled with marginal accuracy and sandblasting the Cercon FPDs increase the fracture strength than treating the material with phosphoric acid.
[Yaser M. Alkhiary. Evaluation of Some Material Properties of Cercon Fixed Partial Dentures. Life Sci J. 2013; 10(1):1332-1337] (ISSN: 1097-8135). http://www.lifesciencesite.com.
Keywords: Zirconia ceramic , CAD/CAM, Marginal discrepancy ,artificial aging ,Fracture strength.