Abstract

SZESZ, Anna Luiza et al. Influence of polishing after staining of a composite subjected to different drinks. Rev. Assoc. Paul. Cir. Dent. [online]. 2012, vol.66, n.1, pp. 48-53. ISSN 0004-5276.

Objective: To assess whether the polishing can minimize or solve the staining caused by dyes of different beverages in composite resins. Methods: 40 specimens were fabricated with composite resin microhybrid Opallis (FGM), B1 color in the plastic matrix (5 mm in diameter and 2 mm thick). The polymerization was carried out with 30 seconds LEDmetron I. Then the specimens underwent initial evaluation of color spectrophotometer VITA Easyshade ® Compact obtaining corresponding values of the scale CIEL*a* b*. The specimens were divided into four groups (n = 10): distilled water (control), coffee, Coca-Cola® and red wine. The specimens were again subjected to color evaluation initial, after the immersion for 60 days to promote the staining, and after the polishing procedure (felt disc with diamond paste). Data were analyzed by two-away ANOVA and Tukey's HSD test (α= 0.05). Results: mean ± standard deviation of L * showed that the composite showed staining (p> 0.001) after 60 days of immersion in wine (57.96 ± 7.98) and coffee (61.89 ± 3.59) when compared to distilled water (73.49 ± 1.20) and Coca-Cola ® (70.50 ± 1.30). The polishing could not improve the staining (p <0.001) caused by wine and coffee. Conclusion: the polishing didn't minimize the stains caused by wine and coffee and such changes considered clinically detectable to the human eye.

Keywords : composite resins; spectrophotometry; dental polishing.