Division of Comprehensive Oral Health, University of North Carolina, Adams School of Dentistry, Chapel Hill, North Carolina, USA.
Restorative Dentistry Unit. College of Dentistry, Ajman University, Ajman, UAE.
J Esthet Restor Dent. 2021 Sep;33(6):899-905. doi: 10.1111/jerd.12640. Epub 2020 Aug 14.
To determine color and translucency stability of present-day resin-based restorative materials.
Disk-shaped (1.0 × 10 mm) resin composites (Filtek Universal, 3M ESPE; Spectra ST, Dentsply Sirona; Gradia Direct X, GC America; Estilite Quick, Tokuyama; Harmonize, Kerr; ACTIVA Bioactive-Restorative, Pulpdent) were prepared and divided into four staining groups (n = 5); coffee (55°C), grape juice (5°C), deionized water (25°C) and thermocycling (20 000 cycles, 5°C to 55°C with a 30-second dwell time). Spectrophotometer measurements were taken at baseline and 14 days for each group and the color stability (CIEDE2000) and changes in the translucency parameter (RTP ) and luminous transmittance of each composite were determined. A 2-way analysis of variance (ANOVA) using maximum likelihood estimations was used for analysis for these changes, with subsequent pairwise comparisons using Bonferroni-corrected Student's t tests and an experiment-wise α = 0.05.
A significant interaction (P < .0001) between material and treatment was found for each change in the esthetic property tested over 14 days. Multiple significant differences between materials for each treatment and between treatments for each material were identified.
The severity of color change and translucency of resin-based materials are dependent on their type, mostly affected by the coffee staining medium. Nano-filled resin composite is most resistant to color change and with stable translucency after artificial aging.
Nano-filled resin composite may be the most esthetically durable resin- based restorative material. Micro-hybrid resin composite and resin-modified glass ionomer restorative material are susceptible to color change and losing their translucency. Hot coffee solution may shorten the esthetic lifespan of a resin-based material.
确定当前树脂基修复材料的颜色和透明度稳定性。
制备圆盘状（1.0×10mm）树脂复合材料（Filtek Universal，3M ESPE；Spectra ST，Dentsply Sirona；Gradia Direct X，GC America；Estilite Quick，Tokuyama；Harmonize，Kerr；ACTIVA Bioactive-Restorative，Pulpdent），并将其分为四个染色组（n=5）；咖啡（55°C）、葡萄汁（5°C）、去离子水（25°C）和热循环（20000 次循环，5°C 至 55°C，停留时间 30 秒）。在基线和每组的 14 天分别对分光光度计进行测量，并确定每种复合材料的颜色稳定性（CIEDE2000）和透明度参数（RTP）以及光透射率的变化。使用最大似然估计的 2 方式方差分析（ANOVA）来分析这些变化，随后使用经 Bonferroni 校正的学生 t 检验进行两两比较，实验水平α=0.05。
在 14 天的时间里，在所测试的每种美学性能的变化中，都发现材料和处理之间存在显著的相互作用（P<0.0001）。对于每种处理的每种材料以及每种材料的每种处理，都确定了多个显著的材料差异。
树脂基材料的颜色变化和透明度的严重程度取决于其类型，主要受咖啡染色介质的影响。纳米填充型树脂复合材料对颜色变化的抵抗力最强，人工老化后透明度稳定。
纳米填充型树脂复合材料可能是最具美学耐用性的树脂基修复材料。微混合树脂复合材料和树脂改性玻璃离子体修复材料容易发生颜色变化和失去透明度。热咖啡溶液可能会缩短树脂基材料的美学寿命。
