Browse

Difference in the translucency of all-ceramics by the illuminant

Cited 41 time in Web of Science Cited 42 time in Scopus
Authors
Ahn, Jin-Soo; Lee, Yong-Keun
Issue Date
2008-11
Publisher
Elsevier
Citation
Dental Materials 2008;24:1539–1544
Keywords
TranslucencyAll-ceramic core and veneerCIE standard illuminant
Abstract
Objectives
The objective of this study was to determine the differences in the translucency parameter (TP) of all-ceramic core, veneer and layered specimens relative to the CIE standard illuminant D65, A and F2.

Methods
The A2-corresponding shade of seven all-ceramic core materials and one sintering ceramic as a reference were prepared in clinically relevant thicknesses (n = 7). The A2- and A3-corresponding shades of each recommended veneer ceramics were fabricated so that the thickness of the layered specimen was 1.5 mm. The color of core, veneer and layered specimens was measured over white and black backgrounds relative to the illuminant D65, A and F2 with a reflection spectrophotometer. TP value was obtained by calculating the color difference between the specimen over the white and that over the black background. Differences of TP values by the illuminant (ΔTP) were analyzed with three-way analysis of variance (ANOVA), with the fixed factors of the type of ceramic, the brand/thickness of ceramic within each type and the combination of illuminants (α = 0.05).

Results
ΔTP values were influenced by three factors based on three-way ANOVA. Higher translucent materials showed higher difference in TP value by the illuminants. TP(D65) was lower than TP(F2) and TP(A) values. Correlation coefficients between TP values relative to the different illuminants were higher than 0.994 (p < 0.01).

Significance
Translucency of all-ceramic materials under daylight condition was lower than those under incandescent or fluorescent lamps. Therefore, this difference should be considered when shade matching translucent shades of all-ceramics.
ISSN
0109-5641
Language
English
URI
https://hdl.handle.net/10371/62034
DOI
https://doi.org/10.1016/j.dental.2008.03.020
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse