Department of Restorative Dentistry & Prosthodontics, The University of Texas School of Dentistry at Houston, Houston, Texas, USA.
Department of Preventive & Restorative Dental Sciences, University of California, San Francisco, California, USA.
Am J Dent. 2024 Aug;37(4):201-205.
To compare staining and artificial accelerating aging-dependent changes in color, translucency, and gloss of cloud-shade and one-shade resin composite.
The "cloud-shade" composites were Filtek Easy Match Universal Restorative (FU) and SimpliShade (SS): three shades each (light, medium and dark), while the "one shade" composites were Admira Fusion x-tra (AD) and Venus Diamond One (VE). Polymerized composite specimens (10 mm in diameter, 2 mm-thick) were polished using PoGo disks for 40 seconds. Color, translucency, and gloss measurements were performed before and after exposure to 3.8-day staining in coffee or wine (equivalent to a year of service with a 15-minute exposure per day), or exposure to 150 kJ/m² of accelerated aging (n= 5 per condition x three conditions, for a total of 15 specimens per shade). Color and translucency were measured using a benchtop spectrophotometer, and CIEDE2000 color differences (ΔE₀₀) and translucency parameter (TP₀₀) were calculated. Gloss (gloss units, GU) was measured using a small-area gloss meter. Gloss retention percentages after staining and aging were calculated. A two-way ANOVA was used to compare the effect of material and procedure, while a Tukey's post hoc multiple comparison test was used to assess differences among levels within each variable (α= 0.05).
The AD exhibited the best color stability upon staining, while VE was the most stable when exposed to artificial aging. Statistically significant differences were recorded among materials and procedures (P< 0.001), and their interactions (P< 0.01). AD also exhibited the highest TP stability upon staining, while the TP of FU was the most stable when exposed to artificial aging. Statistically significant differences were recorded among materials and procedures (P< 0.001), and their interactions (P< 0.01). Gloss retention upon staining and aging was greater than 90% for all tested materials. Statistically significant differences were recorded among materials (P< 0.001), procedures (P< 0.05), and their interactions (P< 0.01).
Staining and artificial accelerated aging changes in color, translucency parameter, and gloss retention of cloud-shade and one-shade resin composites were material- and procedure-dependent.
比较云影色和单色调树脂复合材料在染色和人工加速老化过程中颜色、半透明度和光泽度的变化。
“云影色”复合材料为 Filtek Easy Match Universal Restorative（FU）和 SimpliShade（SS）：每种各三个色号（浅色、中色和深色），而“单色调”复合材料为 Admira Fusion x-tra（AD）和 Venus Diamond One（VE）。聚合后的复合材料试件（直径 10mm，厚度 2mm）用 PoGo 盘抛光 40 秒。在咖啡或红酒中进行 3.8 天染色（相当于每天暴露 15 分钟，服务一年）或暴露于 150kJ/m²的人工加速老化后，对颜色、半透明度和光泽度进行测试（每种条件下 5 个试件×3 种条件，共每个色号 15 个试件）。使用台式分光光度计测量颜色和半透明度，并计算 CIEDE2000 色差（ΔE₀₀）和半透明度参数（TP₀₀）。使用小面积光泽计测量光泽度（光泽单位，GU）。计算染色和老化后的光泽保持率百分比。采用双因素方差分析比较材料和程序的效果，采用 Tukey 事后多重比较检验评估每个变量内各水平之间的差异（α=0.05）。
AD 在染色后表现出最佳的颜色稳定性，而 VE 在人工老化后表现出最稳定的颜色。材料和程序之间存在显著差异（P<0.001），且相互作用之间也存在显著差异（P<0.01）。AD 在染色后也表现出最高的 TP 稳定性，而 FU 的 TP 在人工老化后最稳定。材料和程序之间存在显著差异（P<0.001），且相互作用之间也存在显著差异（P<0.01）。所有测试材料的染色和老化后光泽保持率均大于 90%。材料之间存在显著差异（P<0.001），程序之间也存在显著差异（P<0.05），且相互作用之间也存在显著差异（P<0.01）。
云影色和单色调树脂复合材料的颜色、半透明度参数和光泽度保持率的变化取决于材料和程序。
