ABSTRACT
Objectives: The objective of this study was to evaluate the discolouration effects
of artificial saliva, granule lemon juice, coffee (without sugar), coca cola, sour
cherry juice, fresh carrot juice and red wine on resin-based composite materials that
are commonly used in restorative dentistry.
Methods: Colour of four brands of resin composites (Filtek Z 250 (3M Espe), Filtek
Supreme (3M Espe), Quadrant (Cavex), Charisma (Heraeus-Kulzer)) of A2 shade was measured
after one day of immersion in eight different solutions. Colour measurements were
obtained by using a XL-20 Trismus Colourimeter and colour differences (�E) were estimated.
For statistical evaluation, analysis of variance (ANOVA), Dunnett and Tukey tests
were used at a significance level of 0.05.
Results: For the four restorative materials tested, the lowest ΔE values were observed
in the artificial saliva, while ΔE values were the highest in red wine group. When
comparing the four different restorative materials, Filtek Supreme exhibited the least
colour changes whereas Filtek Z250 was the least colour-stable.
Conclusions: Dental resin composites and drinking solutions were significant factors
that may affect the colour stability. After immersion for one day, all materials showed
visible colour changes. The red wine solution exhibited more staining than others
in three groups. Filtek Supreme showed significantly the least colour change due to
its nano particle sizes. (Eur J Dent 2009;3:50-56)
Key words:
Colour - Composite - Drink
