Color stability of resin composites for orthodontic use

Haylton Marcelo Soares Lima, Ana Paula Terossi de Godoi , William Custodio, Giovana Cherubini Venezian

Introduction: The aim of this in vitro study was to evaluate the interference of three beverages (coffee, Coca-Cola® and red wine) in the color of resin composites: Transbond XT®, Orthocem®, Fill Magic® and Z100®. Methods: The sample was made up of 160 test specimens (n=10), with a total of 40 for each composite. During the experimental period of 28 days, the test specimens were immersed in distilled water and kept in an oven at 37° C. The experimental groups were immersed in coffee, red wine or coca cola, respectively, 5 days a week, for 3 minutes a day. The color variations were quantified, considering the variation expressed in delta E (ΔL*, Δa* and Δb*). The data were statistically analyzed by means of the nonparametric Kruskal Wallis and Dunn tests, considering a level of significance of 5%. Results: No significant differences were verified among the brands (p>0.05) for variation in color (ΔE), when they were immersed in the same solution. For the Transbond XT brand, higher variation in color values (ΔE) were observed for the composites immersed in wine (p<0.05), followed by coffee and Coca-Cola. For Fill magic, Orthocem and Z100, the composites immersed in coffee or wine showed higher variation in color values. Conclusion: All the composites showed higher variation in color values when immersed in wine and coffee when compared with Coca-Cola and distilled water. The composites of the Transbond XT and Z100 brands showed lower variation in color values than Fill Magic and Orthocem when immersed in Coca-Cola and distilled water.

Keywords: Esthetics. Orthodontics. Colorimetry. Resin composites.

How to cite: Lima HMS, Godoi APT, Custodio W, Venezian GC. Color stability of resin composites for orthodontic use. J Clin Dent Res. 2020 May-Aug;17(2):104-17.

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