Two-body wear of different ceramic materials opposed to zirconia ceramic

Statement of problem Little is known about the wear behavior of ceramics opposed to unveneered zirconia and whether wear varies according to microstructure, surface toughness, and flexural strength of the ceramics. Purpose The purpose of this study was to evaluate the 2-body wear resistance of 5 cer...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2010-08, Vol.104 (2), p.105-113
Main Authors: Albashaireh, Zakereyya S.M., BDS, MSc, PhD, Ghazal, Muhamad, DDS, Kern, Matthias, Dr med dent, PhD
Format: Article
Language:English
Subjects:
Analysis of Variance
Apatites - therapeutic use
Ceramics
Dental Alloys - therapeutic use
Dental Porcelain - therapeutic use
Dental Prosthesis Design
Dental Restoration Wear
Dental Stress Analysis
Dentistry
Fluorapatite
Glass ceramics
Humans
Lithium
Mastication
Nanocomposites
Nanomaterials
Nanostructure
Statistics, Nonparametric
Wear
Zirconium - therapeutic use
Zirconium dioxide
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Summary:Statement of problem Little is known about the wear behavior of ceramics opposed to unveneered zirconia and whether wear varies according to microstructure, surface toughness, and flexural strength of the ceramics. Purpose The purpose of this study was to evaluate the 2-body wear resistance of 5 ceramics opposing unveneered zirconia ceramic. Material and methods Yttrium-stabilized zirconia, lithium disilicate glass ceramic, leucite-reinforced glass ceramic, fluorapatite glass ceramic, and nanofluorapatite glass ceramic specimens (n=8) were tested against standardized zirconia balls. Wear tests were performed in a dual-axis mastication simulator. Wear resistance was calculated by measuring the vertical and volumetric substance loss using a laser scanner. Specimen surfaces were evaluated at x50 and x500 magnification using SEM. Data were statistically analyzed using 1-way ANOVA and Fisher's exact test (α=.05). Results Zirconia specimens demonstrated significantly lower vertical and volumetric loss than other ceramics ( P
ISSN:0022-3913
1097-6841
DOI:10.1016/S0022-3913(10)60102-3