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VOLUME 14 , ISSUE 4 ( July-August, 2013 ) > List of Articles


Color Stability of Restorative Materials in Response to Arabic Coffee, Turkish Coffee and Nescafe

Khalid H Al-Samadani

Citation Information : Al-Samadani KH. Color Stability of Restorative Materials in Response to Arabic Coffee, Turkish Coffee and Nescafe. J Contemp Dent Pract 2013; 14 (4):681-690.

DOI: 10.5005/jp-journals-10024-1385

Published Online: 01-12-2013

Copyright Statement:  Copyright © 2013; The Author(s).



To evaluate the effect of Arabic coffee, Turkish coffee and Nescafe on the color stability of four different composite resins after a period of aging time 1, 7 and 30 days.

Materials and methods

Twenty specimens from each type of tested composite resin material were prepared. Five specimens from each tested material (Z350 XT, Artist, GC and Z250) was evaluated after storage in Arabic coffee, Turkish coffee, Nescafe and distil water (control) at 37°C in a dark container for 1, 7 and 30 days. Color measurement was done using colorimeter based on the CIE L* a* b* color scale. Color differences ΔE*ab, Δb* and Δa* among specimens immersed in distil water and staining coffee beverages were evaluated overtime. Mean values were statistically analyzed with one-way analysis of variance (ANOVA), followed by Tukey test with p < 0.05 as significance level.


All tested composite resins showed increase color change after a period of 1, 7 and 30 days. The color change ΔE*ab, Δb* and Δa* exhibited by Arabic coffee, in Turkish coffee and Nescafe except Δa*. The highest total color difference ΔE*ab after 30 days was in group A Arabic coffee (ΔE > 1.5 perceivable) and not perceivable in group B Turkish coffee and group C Nescafe. For Δb* all materials discolored toward yellowness after 30 days except Arabic coffee group which shifted from yellowness toward blueness (Δb*> 1.5 perceivable).


The effect of staining beverages on the resin composite materials increases with time of aging toward yellowness and not perceivable in all groups except with Arabic coffee which had highest effect after 30 days and the discoloration shifted from yellowness to blueness perceivable.

How to cite this article

Al-Samadani KH. Color Stability of Restorative Materials in Response to Arabic Coffee, Turkish Coffee and Nescafe. J Contemp Dent Pract 2013;14(4):681-690.

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