Research Information System
Selcuk Dental Journal, vol.12, no.2, pp.309-312, 2025 (Scopus)
Backgrounds: The aim of the study was to evaluate the color stability after the repair procedure with current single-shade resin composites. Methods: There were used one resin composite (Clearfill Majesty Esthetic) as substrate and two one-shade resin composites (Omnichroma, ZenChroma) as repair materials. For each of the 3 composites used in the study, 18 samples (2 mm thickness, 6 mm diameter) were prepared as a control group to compare the experimental groups. In addition, samples were prepared from conventional composite (1 mm thickness, 6 mm diameter) and these were also subjected to the repair procedure with monochromatic composites. The samples were prepared and immersed in coffee, rosehip tea and distilled water, and color changes (ΔE00) were observed over 30 days. Results: The results showed no significant color change in distilled water, but both composites exhibited significant color changes in coffee and rosehip tea. Coffee caused the highest color change, especially in Omnichroma. Lower color change was observed in the repair groups of Omnichroma and ZenChroma compared to the control material. Conclusion: These findings suggest that repairing restorations may be advantageous, particularly in terms of aesthetic concerns.