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Title Zirconia-Based FDPs Show Survival Rates Similar To Those Of Metal-Ceramic FDPs
Clinical Question How does the survival rate of zirconia-based FDPs compare to those of metal-ceramic FDPs?
Clinical Bottom Line Zirconia-based three unit FDPs show 95% survival rate over a five year period in most studies. Zirconia ceramics may be considered as a valid alternative to traditional metal framework restorations. (See Comments on the CAT below)
Best Evidence (you may view more info by clicking on the PubMed ID link)
PubMed ID Author / Year Patient Group Study type
(level of evidence)
#1) 21206154Komime/2010Multiple Patient Populations ReviewedNarrative Review
Key resultsZirconia-based restorations show similar survival rates to PFM restorations and should therefore be considered as possible alternatives, particularly when superior esthetics is required.
Evidence Search (("Denture, Partial, Fixed"[Mesh] AND "Humans"[Mesh]) AND "Zirconium"[Mesh]) AND "Dental Stress Analysis"[Mesh]
Comments on
The Evidence
This review looked at 17 different studies which measured the framework fracture resistance and veneering porcelain fracture resistance of zirconia-based, multi-unit restorations. While the article references a need for more work to be done to prevent porcelain fracture, it also praises the strength and longevity of the framework.
Applicability Multiple patient populations of various configurations of age, race, and gender were considered in this review and patients were observed for up to five years. Although many studies were reviewed in this article, it appears as though "survival" was defined in terms of substructure integrity. There were some reported instances of fracture of the veneering porcelain. However, these numbers too were quite low. Further research is needed to improve this aspect of zirconia-based FDPs.
Specialty/Discipline (General Dentistry) (Prosthodontics)
Keywords All-ceramic, Zirconia, FDPs, Survival rate
ID# 2095
Date of submission: 09/15/2011spacer
E-mail Checketts@livemail.uthscsa.edu
Author Matthew Checketts
Co-author(s) e-mail
Faculty mentor/Co-author Barry K. Norling, MS, PhD
Faculty mentor/Co-author e-mail NORLING@uthscsa.edu
Basic Science Rationale
(Mechanisms that may account for and/or explain the clinical question, i.e. is the answer to the clinical question consistent with basic biological, physical and/or behavioral science principles, laws and research?)
post a rationale
None available
Comments and Evidence-Based Updates on the CAT
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by Damian Black (San Antonio, TX) on 07/10/2012
A systematic review suggested that future studies use standardized criteria, due to a lack thereof, to determine success, survival, and failure of ceramic restorations with zirconia and metal frameworks. Standardizing failure, success, and survival decisions in clinical studies of ceramic and metal-ceramic fixed dental prostheses. Review PMID: 22192254 [PubMed - indexed for MEDLINE]

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