The effect of discoloration solutions on the color of teeth treated with fixed orthodontics: An in vitro study
Introduction: this research was conducted in 2013 by the ODONTOPOSTGRADOSUCC group at the Faculty of Dentistry, Bogotá campus, and belongs to the “Therapeutics and biomechanics in orthodontics and orthopedics” line of research. The aim of the research was to evaluate changes in tooth color with three dark beverages, for teeth treated with fixed orthodontics. Methods: in this in-vitro experimental study, 48 human premolars were randomly split into three groups of 16 teeth. After cementing and then de-cementing braces, the teeth were submerged in Coca-Cola®, red wine and coffee for 10 days at 37°C. Color was measured before cementing braces (T1) and after exposure to the substances (T2) with a spectrophotometer (Vita Easyshade®), to calculate the difference in color (Δe) between T1 and T2. Paired and Bonferroni t-tests were applied to determine the significance of difference in the parameters L, C, h (p < 0.05). Results: a significant difference was found in L, C, h (p = 0.05). Changes in color were significant: between 79.8 (Coca-Cola®) and 7.5 (coffee) ΔΕ units. Conclusions: teeth presented changes in the color of etched enamel when subjected to dark beverages, with the greatest differences occurring with Coca-Cola® and the smallest with coffee.
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