Comparison of CIELAB Δ E and CIEDE2000 color-differences after polymerization and thermocycling of resin composites

Objectives. Though instrumental technologies have been widely used for quantifying color of esthetic dental materials, the sizes for the perceptible or acceptable color-difference varied. Instead of the CIELAB ΔE * ( Δ E ab * ) formula, the CIEDE2000 (Δ E 00) formula that included weighting and para...

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Bibliographic Details
Published in:Dental materials 2005-07, Vol.21 (7), p.678-682
Main Author: Lee, Yong-Keun
Format: Article
Language:English
Subjects:
CIEDE2000
CIELAB Δ E
Color-difference
Resin composite
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Summary:Objectives. Though instrumental technologies have been widely used for quantifying color of esthetic dental materials, the sizes for the perceptible or acceptable color-difference varied. Instead of the CIELAB ΔE * ( Δ E ab * ) formula, the CIEDE2000 (Δ E 00) formula that included weighting and parametric functions was introduced. The objective of this study was to determine the correlation between color-difference values of Δ E ab * and Δ E 00 after polymerization and thermocycling of dental resin composites. Methods. Color-differences were calculated between unpolymerized and polymerized, and between polymerized and thermocycled resin composites. Color was measured relative to the standard illuminant D65 over a white background with SCE geometry. Regression analyses were performed between the color difference values of Δ E ab * and Δ E 00. Results. There were significant correlations between Δ E ab * values and Δ E 00 values after polymerization and thermocycling ( p
ISSN:0109-5641
1879-0097
DOI:10.1016/j.dental.2004.09.005