Poggio Claudio, Ceci Matteo, Beltrami Riccardo, Mirando Maria, Wassim Jaffal, Colombo Marco
Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of PaviaPaviaItaly.
Acta Biomater Odontol Scand. 2016 Aug 10;2(1):95-101. doi: 10.1080/23337931.2016.1217416. eCollection 2016 Dec.
The aim of this study was to evaluate the color stability of different restorative materials (one microfilled composite, one nanofilled composite, one nanohybrid composite and one Ormocer-based composite) after exposure to different staining solutions (coffee, coca-cola and red wine). All materials were polymerized into silicon rings (2 mm ×6 mm ×8 mm) to obtain specimens identical in size. Thirty cylindrical specimens of each material were prepared. They were immersed in staining solutions over a 28-day test period. A colorimetric evaluation according to the CIE system was performed by a blind trained operator at 7, 14, 21, 28 days of the staining process. The Shapiro-Wilk test and Kruskal-Wallis ANOVA were applied to assess significant differences among restorative materials. The paired -test was applied to test which CIE parameters significantly changed after immersion in staining solutions. All restorative materials showed clinically perceptible color differences after immersion in coffee. and values showed the highest variability. Coca cola and red wine did not influence the color stability for all restorative materials except for Filtek Supreme XTE. Coffee caused a significant color change in all types of tested composite resins. Filtek Supreme XTE demonstrated alone a staining susceptibility to red wine; no other significant differences among the materials were demonstrated. Long-term exposure to some food dyes (coffee in particular) can significantly affect the color stability of modern esthetic restorative materials regardless of materials' different composition.
本研究的目的是评估不同修复材料（一种微填料复合树脂、一种纳米填料复合树脂、一种纳米混合复合树脂和一种基于硅氧烷陶瓷的复合树脂）在接触不同染色溶液（咖啡、可口可乐和红酒）后的颜色稳定性。所有材料均聚合到硅环（2毫米×6毫米×8毫米）中，以获得尺寸相同的试样。每种材料制备30个圆柱形试样。在28天的测试期内，将它们浸泡在染色溶液中。在染色过程的第7天、14天、21天和28天，由一名经过盲法训练的操作人员根据CIE系统进行比色评估。应用Shapiro-Wilk检验和Kruskal-Wallis方差分析来评估修复材料之间的显著差异。应用配对检验来测试浸泡在染色溶液后哪些CIE参数发生了显著变化。所有修复材料在浸泡在咖啡中后均出现临床上可察觉的颜色差异，L和b值显示出最高的变异性。除了Filtek Supreme XTE外，可口可乐和红酒对所有修复材料的颜色稳定性均无影响。咖啡在所有类型的测试复合树脂中均引起了显著的颜色变化。Filtek Supreme XTE单独表现出对红酒的染色敏感性；材料之间未显示出其他显著差异。长期接触某些食用色素（尤其是咖啡）会显著影响现代美学修复材料的颜色稳定性，而与材料的不同成分无关。
