Color Stability and Color Recovery of Single-shade Restorative Resin Composites: An In-vitro Study
Open Dentistry Journal, cilt.20, 2026 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 20
- Basım Tarihi: 2026
- Doi Numarası: 10.2174/01187421065590260911105414
- Dergi Adı: Open Dentistry Journal
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, EMBASE
- Anahtar Kelimeler: Color recovery, Color stability, Esthetic dentistry, Mouthrinses, Single-shade restorative resin composite, Staining
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Akdeniz Üniversitesi Adresli: Evet
Özet
Introduction: Single-shade restorative resin composites simplify shade selection, but their color stability and response to whitening mouthrinses remain uncertain. This in-vitro study evaluated their staining susceptibility and subsequent color response. Materials and Methods: A total of 360 specimens (6 × 2 mm) were prepared from three single-shade restorative resin composites and one nanohybrid control. Specimens were immersed in distilled water, coffee, or red wine for 1 month (n = 30). They then underwent a 4-week protocol using one of two peroxide-free whitening mouthrinses (n = 15). Color was measured with a spectrophotometer at baseline, after 1 week and 1 month of immersion, and after mouthrinse application, with three consecutive readings obtained at each time point. CIEDE2000 color differences were analyzed using analysis of variance and multiple linear regression (p < 0.05). Results: Material and immersion medium significantly affected color change (p < 0.001). At 1 month, red wine caused the greatest change (12.74 ± 2.50 to 21.53 ± 1.99), followed by coffee (7.80 ± 2.35 to 13.88 ± 2.27); distilled water produced the lowest values. The response to mouthrinse application varied by material and medium. Residual color difference decreased in most red-wine groups but increased in some distilled-water and coffee groups. Complete color recovery was not achieved. Discussion: CDO was the most susceptible material, whereas OMN and ESQ were more resistant. Reduced lightness was the predominant component of staining. Conclusion: Staining and the response to mouthrinse application were material- and medium-dependent. Peroxide-free mouthrinses did not consistently reduce residual color differences across all experimental groups.