Evaluati
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.
