hrvatski

Evaluacija stabilnosti boje estetskih ortodontskih bravica

Introduction: The esthetic brackets should be resistant to discoloration. However, the color change is possible even in patients with excellent oral hygiene. Therefore, the aim of this study was to evaluate the color stability of ceramic brackets and composite resin samples after immersion in most commonly consumed beverages. Materials and methods: 80 ceramic brackets from four different manufacturers (Forestadent®, G&H®, GC and DynaFlex®) and 40 samples of composite resin (3M™Transbond™ XT) were immersed into four different solutions: coffee, Coca-Cola®, Cedevita® and artificial saliva (control group). The content was kept in an incubator (Cultura, Ivoclar Vivadent) at 37 °C. Color readings were assessed before (T0), at 24 hours (T1), 72 hours (T3), 7 days (T4), and 14 days (T5) after initial immersion using spectrophotometer (Vita Easyshade® Advance 4.0) according to L*a*b* color scale. Results: All brackets and composite resin showed color changes over time, even in artificial saliva. Coffee caused the most intense color change among all samples. All brackets kept in Coca-Cola® showed less intense staining. According to Kruskal-Wallis test there was statistically significant diffference (p=0.0046) in bracket discoloration. Among all, G&H brackets showed the best color stabilization, while the greatest color alteration was perceived in Forestadent® brackets (p=0.008). The composite resin samples performed the weakest color change in Cedevita® (∆E*=11.5). Conclusion: Both ceramic orthodontic brackets and composite resin samples immersed in potentially staining solutions underwent color modification. Coffee showed the greatest impact on color stability

esthetics ; ceramic brackets ; color stability ; staining solutions ; spectrophotometry

nije evidentirano

engleski

Evaluation of the color stability of esthetic orthodontic brackets

Introduction: The esthetic brackets should be resistant to discoloration. However, the color change is possible even in patients with excellent oral hygiene. Therefore, the aim of this study was to evaluate the color stability of ceramic brackets and composite resin samples after immersion in most commonly consumed beverages. Materials and methods: 80 ceramic brackets from four different manufacturers (Forestadent®, G&H®, GC and DynaFlex®) and 40 samples of composite resin (3M™Transbond™ XT) were immersed into four different solutions: coffee, Coca-Cola®, Cedevita® and artificial saliva (control group). The content was kept in an incubator (Cultura, Ivoclar Vivadent) at 37 °C. Color readings were assessed before (T0), at 24 hours (T1), 72 hours (T3), 7 days (T4), and 14 days (T5) after initial immersion using spectrophotometer (Vita Easyshade® Advance 4.0) according to L*a*b* color scale. Results: All brackets and composite resin showed color changes over time, even in artificial saliva. Coffee caused the most intense color change among all samples. All brackets kept in Coca-Cola® showed less intense staining. According to Kruskal-Wallis test there was statistically significant diffference (p=0.0046) in bracket discoloration. Among all, G&H brackets showed the best color stabilization, while the greatest color alteration was perceived in Forestadent® brackets (p=0.008). The composite resin samples performed the weakest color change in Cedevita® (∆E*=11.5). Conclusion: Both ceramic orthodontic brackets and composite resin samples immersed in potentially staining solutions underwent color modification. Coffee showed the greatest impact on color stability

esthetics ; ceramic brackets ; color stability ; staining solutions ; spectrophotometry

nije evidentirano