Akademik Veri Yönetim Sistemi
2025 IADR/PER General Session & Exhibition, Barcelona, İspanya, 25 - 28 Haziran 2025, ss.197, (Özet Bildiri)
Objective: The objective of this study is to evaluate the color change of novel bulk-fill composites after polymerization and to assess their coloration stability in daily drinking beverages.
Methods: Three novel bulkfill composites; one preheated bulkfill (VisCalor, Voco GmbH, Cuxhaven, Germany), one ormocer-based bulkfill (Admira Fusion V, Voco) and one sonic activated bulkfill (Sonicfill 3, Kerr Corp., CA, USA) were used in present study. Initially, the color changes subsequent to polymerization of tested bulkfill RBC's were investigated, then the effects of exposure to commonly consumed beverages over a duration of one week on the color changes were evaluated. Forty-five disc-shaped (6 mm in diameter and 2 mm in thickness) specimens were prepared for each materials using a Teflon mold. The restorative materials were packed into mold on a polyethylene terephthalate strip, and after packing, another strip was placed on top of the specimens’ surface. Before the polymerization, first color measurement (T0) of the unpolymerized specimens was performed using a clinical spectrophotometer (VITA Easyshade Compact, VITA Zahnfabrik). After measurements, restorative materails 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 (T1) 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 (Doluca 2011, Doluca) and coffee (Nescafe Classic Single Bags, Nestle India). All specimens were numbered 1–15 for consequent measurements, discoloration solutions were renewed daily, and the specimens were rinsed with distilled water for 10 s before measurements. The color coordinates of specimens were recorded after one week (T2) of immersion. All color measurements were performed according to the CIEDE2000 color coordinates relative to the D65 standard illumination against a standard white background (L: 95.4, a: 0.3, b: 21.2) using a clinical spectrophotometer. Color change values were calculated using CIEDE2000 (ΔE00). The Kolmogorov–Smirnov test was performed to analyze the normality of ΔE00 data. According to the results, two-way ANOVA and Tukey post hoc tests were conducted to evaluate color changes after initial polymerization of restorative materials and to determine their color stability after immersion in distilled water, red wine, and coffee during 1 w immersion.
Results: In the results, a statistically significant difference was found between all groups (p<0.05). While there was a significant difference between VS and AFV groups in terms of color change after polymerization, AFV demonstrated significant colour stability when immersed in DW, RW and CF for 1w (p<0.05).