Translucency of shaded zirconia core material

Statement of problem With the development of various zirconia core shades, questions arise regarding the effect of the shaded zirconia on the translucency of ceramic crowns. Purpose The purpose of this study was to investigate the translucency of the 3 Procera Zirconia shaded core materials. The hyp...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2011-05, Vol.105 (5), p.304-307
Main Authors: Spyropoulou, Panagiota-Eirini, DDS, MS, Giroux, Emily C., DDS, MS, Razzoog, Michael E., DDS, MS, MPH, Duff, Renée E., DDS, MS
Format: Article
Language:English
Subjects:
Analysis of Variance
Ceramics
Computer aided design
Crowns
Dental Abutments
Dental Porcelain
Dental Prosthesis Design
Dental Restoration, Permanent
Dentistry
Discs
Disks
Esthetics, Dental
Optical Phenomena
Prosthesis Coloring
Prosthetics
Shades
Spectrophotometry
Zirconium - chemistry
Zirconium dioxide
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Summary:Statement of problem With the development of various zirconia core shades, questions arise regarding the effect of the shaded zirconia on the translucency of ceramic crowns. Purpose The purpose of this study was to investigate the translucency of the 3 Procera Zirconia shaded core materials. The hypothesis was that differences exist in the translucency of various shaded zirconia cores. Material and methods Disk-shaped (0.6 ± 0.01 × 12 mm) zirconia core (Procera Zirconia) specimens (n=90) were fabricated by the manufacturer using a CAD/CAM process. The disks were fabricated in 3 groups according to shade (light, medium, intense) (n=30). A spectrophotometer was used to measure contrast ratio (CR) which is indicative of translucency. One-way ANOVA was conducted to determine significant differences among the shades (α=.05). Results A significant difference in translucency between the light and intense shades ( P =.030) and the medium and intense shades ( P
ISSN:0022-3913
1097-6841
DOI:10.1016/S0022-3913(11)60056-5