Akademik Veri Yönetim Sistemi
2025 IADR/PER General Session & Exhibition, Barcelona, İspanya, 25 - 28 Haziran 2025, ss.188
Objectives: The objective of this in vitro study was to evaluate the color stability of different types and structures of resin-based composites (RBC), which are frequently utilized in daily dental practice, when exposed to commonly consumed beverages.
Methods: In this study, four different types of resin-based composites (RBC) were used: a nano RBC (Dr. Müller Kaiser, Remar Technik GmbH, Lübbecke, Germany), a micro-hybrid RBC (Dr. Müller Kaiser), a flowable RBC (Dr. Müller Kaiser), and a bulk-fill RBC (Dr. Müller Kaiser). The 45 disc-shaped specimens (6mm in diameter and 2mm in thickness) were prepared for each materials using a Teflon mold placed up to a strip and after packing another strip was placed on the top surface of materials and materials were cured at standard power (1000 mW/cm2) using a light-curing unit (Valo, Ultradent, South Jordan, UT, USA). Following the polymerization, baseline color measurements (T0) were performed and to evaluate their color stability over time in different beverages, specimens were divided into 3 groups to be immersed in distilled water, red wine and coffee (n=15). All specimens were numbered 1–15 for consequent measurements, discoloration solutions were renewed daily, and measurements were repeated after 1 day (T1), 1 week (T2) and 1 month (T3) immersion. All color measurements were performed according to the CIEDE2000 color coordinates relative to the D65 standard illumination against a standard white background using a clinical spectrophotometer (VITA Easyshade Compact, VITA Zahnfabrik). The one-way ANOVA and a Tukey post-hoc test was used to evaluate color changes (ΔE). The significance level was set at p ≤ 0.05.
Results: No significant time-dependent differences were observed in distilled water. Conversely, substantial time-dependent variations were detected in coffee and redwine.
Conclusions: All materials tested in this study showed color change in colorant solutions over time.