实验室研究两种当代树脂复合材料暴露于香料后颜色的变化。

A laboratory investigation of colour changes in two contemporary resin composites on exposure to spices.

机构信息

Department of Operative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Malaysia.

出版信息

Aust Dent J. 2013 Dec;58(4):468-77. doi: 10.1111/adj.12099. Epub 2013 Aug 19.

DOI:10.1111/adj.12099

PMID:24320904

Abstract

BACKGROUND

The aim of this study was to evaluate colour stability upon exposure to spices of a nano-filled and a micro-hybrid resin composite finished either with Sof-Lex™ discs (SLD) or against plastic strips (PS).

METHODS

Forty cylindrical specimens of 3 mm thickness were fabricated from Filtek Supreme XT ™ (FS) and Gradia Direct X™ (GD). The top surface of each specimen was polished with SLD while the bottom surface was finished against PS. All samples were immersed in staining solutions (0.1% weight turmeric, paprika and tamarind) and distilled water at 37 °C. Colour after 0, 24, 72 and 168 hours of immersion was recorded with a reflection spectrophotometer using CIE Lab* parameters and the results were statistically analysed with repeated measures of ANOVA and Bonferroni post hoc tests.

RESULTS

Among all the staining solutions tested, the highest colour deviation was obtained in the turmeric group. FS finished against PS showed significantly more colour changes compared to specimens polished with SLD, while GD finished against PS were found to be more resistant to colour changes.

CONCLUSIONS

Within the limitations of this study all the spices tested have the potential to stain resin composites with turmeric causing the most significant discolouration. Micro-hybrid and nano-filled resin composites appeared to respond differently to staining by spices when either finished with PS or polished with SLD.

摘要

背景

本研究旨在评估纳米复合树脂和微混合树脂复合材料在暴露于香料后的颜色稳定性，这些复合材料使用 Sof-Lex™ discs（SLD）或塑料条（PS）完成表面处理。

方法

从 Filtek Supreme XT™（FS）和 Gradia Direct X™（GD）中制备了 40 个 3 毫米厚的圆柱形样本。每个样本的上表面用 SLD 抛光，下表面用 PS 完成。所有样品均在 37°C 的染色溶液（0.1%重量的姜黄、辣椒粉和罗望子）和蒸馏水中浸泡。使用 CIE Lab*参数，在 0、24、72 和 168 小时后用反射分光光度计记录颜色，并使用重复测量方差分析和 Bonferroni 事后检验对结果进行统计学分析。