Int J Prosthodont 30 (2017), No. 5 8. Sep. 2017
Int J Prosthodont 30 (2017), No. 5 (08.09.2017)
Page 461-464, doi:10.11607/ijp.5116, PubMed:28806427
Fixed Dental Prostheses and Single-Tooth Crowns Based on Ceria-Stabilized Tetragonal Zirconia/Alumina Nanocomposite Frameworks: Outcome After 2 Years in a Clinical Trial
Hüttig, Fabian / Keitel, Jan P. / Dentist / Prutscher, Andreas / Spintzyk, Sebastian / Klink, Andrea
Purpose: This clinical trial tested bilayered restorations based on ceria-stabilized tetragonal zirconia/alumina frameworks veneered with feldspathic ceramic.
Materials and Methods: A total of 67 crowns and 40 fixed dental prostheses (FDPs) were luted in 57 patients with self-etching/self-adhesive composite resin cement. Dental status and integrity of restorations were evaluated at 2 weeks, 6 months, and then annually.
Results: A total of 66 crowns and 36 FDPs (88% posterior) survived for success rates of 93.4% for crowns and 89% for FDPs at 2 years. In particular, 11 cohesive ceramic chippings were observed in 5 crowns and 6 FDPs.
Conclusion: The material allows excellent marginal adaptation. Susceptibility to veneering failures might be due to framework design and the necessities of esthetics.