Effect of veneering technique on the fracture resistance of zirconia fixed dental prostheses

Summary  To compare the fracture resistance of zirconia 3‐unit posterior fixed dental prostheses (FDPs) frameworks veneered with different veneering materials and techniques before and after artificial ageing. Forty‐eight zirconia 3‐unit FDPs, representing a missing first molar, were adhesively ceme...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2013-01, Vol.40 (1), p.51-59
Main Authors: CHAAR, M. S., WITKOWSKI, S., STRUB, J. R., ATT, W.
Format: Article
Language:English
Subjects:
computer-aided design/computer-aided manufacturing
Dental Materials - chemistry
Dental Prosthesis Design
Dental Restoration Failure
Dental Stress Analysis
Dental Veneers - standards
Dentistry
Denture, Partial, Fixed - standards
fixed dental prostheses
Humans
layering
Materials Testing - methods
Molar
press-over
Time Factors
zirconia
Zirconium - chemistry
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Summary:Summary  To compare the fracture resistance of zirconia 3‐unit posterior fixed dental prostheses (FDPs) frameworks veneered with different veneering materials and techniques before and after artificial ageing. Forty‐eight zirconia 3‐unit FDPs, representing a missing first molar, were adhesively cemented on human teeth. The zirconia frameworks were randomly distributed according to the veneering materials and techniques into three groups, each containing 16 samples: group LV (layering technique/Vintage ZR), group LZ (layering technique/ZIROX) and group PP (CAD/CAM and press‐over techniques/PressXZr). Half of each group was artificially aged through dynamic loading and thermocycling to simulate 5 years of clinical service. Afterwards, all specimens were tested for fracture resistance using compressive load. An analysis of variance (anova) was used to assess the effect of veneering ceramic and artificial ageing on fracture resistance (P 
ISSN:0305-182X
1365-2842
DOI:10.1111/j.1365-2842.2012.02323.x