Method: The sample were divided into four groups according to the commercial brand and stored in four different solutions (distilled water, cola soda, coffee and mouthrinse) at 37°C for 14 days. Possible color changes measured according to the CIE L*a*b* color system with a spectrophotometer at five intervals of time after storage, and the statistical analysis were carried out using ANOVA to 1% and Tukey’s tests, and decomposition of interactions with a significance level of 5%.
Result: The color changes were dependent on the solution, storage time and the brand of brackets. The largest color changes were observed in the G3, followed by G2, G1/G4.
Conclusion: The esthetic brackets do not present satisfactory and stable chromatic behavior.