Color stability of resin composites for orthodontic attachments: an in vitro study

Abstract

Objective: The aim of the present study was to evaluate the color stability of Filtek Z350 XT, Filtek Z250 XT, Z100 resin composites and Transbond XT orthodontic resin, all used in orthodontic attachments, when immersed in popular beverages. Methods: Thirty disk-shaped specimens of each resin composite (2 x 5mm) were manufactured and randomly divided into six groups according to immersion solutions: coffee, red wine, white wine, regular beer, dark beer and deionized water (control). The specimens were fully immersed in each of the solutions for six days at 37°C, representing approximately six months of consumption. The color measurements were evaluated by a reflection spectrophotometer, at baseline (before immersion) and after staining. L*a*b* coordinates were measured and the color change (ΔE00) was calculated using the CIEDE2000 formula. The data were analyzed by ANOVA/Tukey tests at a significance level of 0.05. Results: The resin composites immersed in white wine and regular beer showed either imperceptible or clinically acceptable ΔE00, and no difference from the control group (p= 0.4449 and p= 0.467 respectively). Immersion in coffee and red wine were considered clinically unacceptable and were significantly different from the control group (p= 0.0028 and p= 0.0475 respectively). Conclusion: Based on the results of the present study, the consumption of coffee and red wine may cause color change of the resin composite attachments above the visual acceptability threshold, and impair aesthetics during treatment.

Influence of pH levels and beverage exposure on force decay and color stability of orthodontic elastomeric chains: An experimental study

“…Similar to Red Bull, beer yielded relatively low ΔE* values, placing it among the solutions with minimal color change. These results align with existing literature ( Chami et al, 2022 , Sarembe et al, 2022 ). Coconut water, like beer, exhibited minimal staining.…”

Color Stability of Orthodontic Ceramic Brackets and Adhesives in Potentially Staining Beverages—In Vitro Study

“…Even though the color was not completely stable, there was only a slight, clinically acceptable change (∆E* < 3.7) in all bracket brands in the control group, which is in correlation with previous studies [13,23]. Regarding adhesives, Transbond™ XT samples in the control group showed clinically acceptable color change, which is in accordance with a study by Chami et al [25].…”

“…The staining potential of the adhesives depends on their composition, surface properties [ 14 , 21 ] and hydrophilicity [ 36 ]. The more hydrophilic the resin, the greater the absorption of water and water-soluble pigments [ 18 , 25 , 36 ]. The color stability of esthetic brackets depends not only on the manufacturing process as mentioned earlier, but also on the surface properties and morphology—size, shape, and thickness of the brackets [ 11 , 13 , 22 , 35 ].…”