LOGIN
 
Share Page:
Back

Volume 11 , Issue 6
November/December 1998

Pages 602-609


Fracture Strength of 5 Different All-Ceramic Crown Systems

Strub/Beschnidt


PMID: 10023224

Purpose: The purpose of this study was to evaluate the fracture resistance of 5 different all-ceramic crown systems (In-Ceram, Empres staining technique, Empress veneering technique, Celay feldspathic system, and Celay In-Ceram system) before and after cyclic preloading in an artificial mouth. Materials and Methods: Extracted natural maxillary incisors we re prepared with a 90-degree shoulder. The crowns were adhesively luted to the abtuments using dual-cured composite cement. Half of the specimens were artificially aged via a chewing simulation and thermocycling, and all specimens were tested for fracture strength. The results were compared with those of porcelain-fused-to-metal (PFM) crowns with circular porcelain-butt margins that were cemented with zinc phosphate cement. Results: The chewing simulation and the thermocycling significantly decreased the fracture strength of all tested crown systems (P < 0.01). There were no statistically significant differences between the all-ceramic crown groups and the PFM crowns. Conclusion: All-ceramic crowns can be used for anterior restorations. However, in vivo investigations of all-ceramic crown systems should be undertaken before introducing them into routine clinical use.


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2017 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help