Color stability of nanohybrid resin-based composites, ormocers and compomers
pp 1-7
First online:
Abstract
Objective
The aim of this
study is to evaluate the color stability of two nanohybrid resin-based
composites, two organic modified ceramic resin composites (ormocers) and
a compomer, following their immersion during 4 weeks in four usual
drinks.
Material and methods
Forty discs of each
of the following materials were prepared: GrandioSO (GR), Esthet X (EX),
Dyract EXTRA (DY), Ceram X duo (CX), and Admira Fusion (AD). The discs
were polished and stored in distilled water during 24 h at 37 °C. Color
according to the CIEL*a*b* scale was recoded. Ten randomly selected
samples of each material were immersed in red wine (RW), coffee (CF),
cola (CK), and distilled water (DW). The color was recorded after 1, 7,
21 and 28 days of immersion. The ΔE values between the baseline color
and each of the study timepoints were calculated. The data were analyzed
based on the Kruskal-Wallis test, Wilcoxon test, and Mann-Whitney U test.
Results
After 1 day of immersion, all the materials showed ΔE > 3.3, except EX, CF, and CX in CK. RD was the most staining beverage (ΔE 15.36 to 31.09). EX and CX were significantly less stained than the rest of the materials (p < 0.05).
Conclusions
All the staining
solutions produced darkening beyond clinically acceptable limits. EX and
CX were the materials who experimented less staining, followed by GD.
AD and DY were the materials more stained. RW was the drink that
produced more staining, followed by CF and CK.
Clinical relevance
After 24 h of
immersion in all the solutions, equivalent to 1 month of exposure in the
mouth, the evaluated materials showed clinically unacceptable ΔE values.
Comments