Porcelain-fused-to-metal crowns or all-ceramic crowns?


This rapid review from the Canadian Agency for Drugs and Technologies in Health (CADTH) identified 29 studies including 10 systematic reviews. The findings suggest a lower long term survival rate for ceramic crowns (48%) compared with porcelain fused to metal crowns (62%).

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Zirconium based dental restorations –available evidence limited


While this review of zirconium restoration included 27 studies, only 5 were RCTs. Furthermore only 4 studies had more than 5 years follow up. Ten studies included fewer than 20 restorations, so while good survival data was presented, the results should be viewed with caution.

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Limited evidence to compare survival of metal ceramic with porcelain-fused-to-zirconia single crowns


Crowning of teeth has been carried out for many years in order to replace damaged/diseased tooth structure or to improve aesthetics.  Increasing patient demand has helped lead developments in ceramic technology and zirconium is one of the new materials in this field. The aim of this study was to compare the clinical survival rates of [read the full story…]

Gold crowns had better survival rates than ceramic full-coverage crowns after 5 years


The aim of this study was to evaluate the clinical outcome of shrinkage-free ZrSiO4-ceramic full- coverage crowns on premolars and molars in comparison with conventional gold crowns over a 5-year period. Invited patents who required posterior crowns were randomised to receive either a shrinkage-free ZrSiO4-ceramic crown (test group) or a gold crown (control group). The [read the full story…]

New critical summary from the American Dental Association Center for Evidence-based Dentistry


The latest critical summary to come from the ADA-EBD Center is of a 2010 review by Schley et al. The aim of the original review was to assess the 5-year survival rates of all-ceramic zirconia-based fixed dental prostheses (FDPs) and to analyze technical and biological complications. The reviewer highlighted a number of issues with the [read the full story…]

Are zirconia-based restorations clinically successful?


A new critical summary of a 2010 systematic review  by Al-Amleh et al  on zirconium use in dentistry is now available from the ADA Centre for evidence based dentistry. The summariser notes that three types of zirconium ceramics are currently used in dentistry. The original review’s aim was evaluate these restorations in relation to framework [read the full story…]