Avaliação in vitro da alteração de cor de diferentes resinas compostas por café e vinho tinto

Abstract

The composites showed remarkable improvements in recent years, however, the color change is also a constant problem in the use of these materials. The objective of this study was to evaluate the change of color of four commercial brands of composite resin Filtek ™ Z350XT, Filtek ™ Z250 and Filtek ™ Z100 (3M, Ribeirão Preto, São Paulo, Brazil) and Opallis (FGM, Joinville, Santa Catarina, Brazil ) when subjected to staining by red wine and coffee. Materials and methods: 240 cylindrical specimens were prepared and subjected to staining by 1, 3 or 7 days. In each time interval, they were evaluated with the Easyshade® apparatus in parameters L, a, b, and ΔE corresponding global color change was calculated. Results: Using the Tuckey test (p ≤ 0.05), red wine changed over the color of the specimens, except for Filtek ™ Z250. With red wine, most color change was obtained by Filtek ™ Z350XT (p ≤ 0.05). With coffee, for Opallis and Filtek ™ Z350 to t test (p ≤ 0.05). The Filtek ™ Z100 and Z250 Filtek ™ resins showed the best results regardless of the dye. Except for Filtek ™ Z250, specimens longer change color when immersed for 7 days in a dye solution, compared to 1 to 3 days. Conclusion: The resins alter its color when exposed to agents commonly ingested in the daily routine. Knowing this interaction between coloring agents and the resinous material used is important to increase the aesthetic longevity of restorations.