Oper Dent. 2021 Mar 1;46(2):188-196. doi: 10.2341/20-099-L.
The aim of this study was to compare the effects of accelerated aging on the overall color stability of potentially color adjusting commercial resin-based composite resins. Thirty specimens (10 mm diameter and 2.5 mm thick; n=6) were fabricated using five different materials: Estelite Omega, GC Kalore, Venus Pearl, Harmonize, and Omnichroma. Color measurements were taken for each sample using a spectrophotometer before and after submitting samples through the artificial aging process (Q-sun Xenon Test Chamber, 102 min light at 63°C black panel temperature; 18 min light and water spray per ASTM G155) for a total of 300 hours (12.5 days). The total color difference (ΔEab) was calculated using SpectraMagic NX software and analyzed using one-way analysis of variance and Tukey test. The results for color change (ΔEab) were statistically significant. Omnichroma and Venus Pearl presented superior color stability and the lowest overall color change, whereas GC Kalore and Harmonize presented significant color change that would be considered clinically unacceptable (ΔE*ab > 3.3).
本研究旨在比较加速老化对潜在颜色调节型商用树脂基复合树脂整体颜色稳定性的影响。使用五种不同材料（Estelite Omega、GC Kalore、Venus Pearl、Harmonize 和 Omnichroma）制作了 30 个样本（直径 10mm，厚 2.5mm；n=6）。使用分光光度计在每个样本进行人工老化处理（Q-sun 氙灯测试室，63°C 黑色面板温度下 102 分钟光；ASTM G155 规定的每 18 分钟光和水喷雾）之前和之后对每个样本进行颜色测量，总共有 300 小时（12.5 天）。使用 SpectraMagic NX 软件计算总色差（ΔEab），并使用单向方差分析和 Tukey 检验进行分析。颜色变化（ΔEab）的结果具有统计学意义。Omnichroma 和 Venus Pearl 表现出更好的颜色稳定性和最低的整体颜色变化，而 GC Kalore 和 Harmonize 则表现出明显的颜色变化，这将被认为是临床不可接受的（ΔE*ab > 3.3）。
