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

• Published in: Dentistry journal 2022-06, Vol.10 (7), p.115
• Main Authors: Šimunović, Luka, Blagec, Tadeja, Vrankić, Andrea, Meštrović, Senka
• Format: Article
• Language: English
• Subjects: Adhesives; Beverages; Brackets; ceramic brackets; Ceramics; Coffee; Color; color stability; Composite materials; Discoloration; esthetics; Evaluation; Immersion; Orthodontics; Saliva; spectrophotometry; Stability analysis; Staining; Standard deviation; Statistical analysis; Submerging; Thermal cycling; Variance analysis
• ISSN: 2304-6767; 2304-6767
• DOI: 10.3390/dj10070115

The aim of this study was to evaluate the color stability of esthetic ceramic brackets and adhesive samples after immersion in most commonly consumed beverages. A hundred ceramic brackets from five different manufacturers (Forestadent®, G&H®, GC, DynaFlex®, and American Orthodontics) and 120 samples of adhesives (3M™Transbond™ XT and American Orthodontics BracePaste® color change adhesive and BracePaste® adhesive) were immersed into four different solutions: coffee, Coca-Cola®, the vitamin drink Cedevita®, and artificial saliva (control group). The samples were kept in an incubator at 37 °C. Color readings were evaluated before (T0), at 24 h (T1), 72 h (T3), 7 days (T4), and 14 days (T5) after initial immersion using a spectrophotometer according to the L*a*b* color scale. All the examined brackets showed a statistically significant difference in discoloration (p = 0.001). 20/40™ Brackets (American Orthodontics) showed the best color stability, while the greatest color modification was recognized in QuicKlear® III (Forestadent®) brackets. Regarding adhesives, the greatest staining was observed in the BracePaste® color change adhesive and the least in the Transbond™ XT samples. In conclusion, color change occurs in all solutions, including control groups, and coffee has the greatest impact on color stability.