Effect of resin matrix composition on the translucency of experimental dental composite resins
Effect of resin matrix composition on the translucency of experimental dental composite resins
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DOI：
10.1016/j.dental.2009.07.011
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发表时间：
2009-12-01
期刊：
影响因子：
5
通讯作者：
van Noort, Richard
中科院分区：
文献类型：
--
作者：
Azzopardi, Natasha;Moharamzadeh, Keyvan;van Noort, Richard
目标.本研究的目的是探讨树脂基质组成对实验性牙科复合树脂透明性的影响。配制三种类型的未填充树脂基质（基于TEGDMA、基于UDMA和基于BisGMA）并进行光固化。此外，六个不同的实验牙科复合树脂与恒定的填料加载，但不同的单体的类型和含量的BisGMA制作。制备具有15.5mm直径和1.0mm厚度的每种测试材料的盘（N=3）并光固化。使用UV/维斯分光光度计测量每个样品的总透射率和漫透射率值，读数范围为380至700 nm。使用CIE Lab系统测量颜色差异。通过单因素方差分析和Tukey检验进行的统计分析表明，三种未填充树脂之间的透光率值无统计学显著差异。然而，随着填料的加入，含BisGMA的复合树脂显示出比基于UDMA和TEGDMA的复合树脂显著更高的透射率值。回归分析表明，树脂基质中BisGMA的含量与总透光率和弥散透光率呈线性相关。树脂基质中BisGMA的用量对含二氧化硅填料的牙科复合树脂的透光性有显著影响。(C)2009年牙科材料学院。由爱思唯尔有限公司出版。保留所有权利。
Objectives. The purpose of this study was to investigate the effect of the resin matrix composition on the translucency of experimental dental composite resins.Methods. Three types of unfilled resin matrices (TEGDMA-, UDMA-and BisGMA-based) were formulated and light cured. In addition, six different experimental dental composite resins with constant filler loading but varying in the type of monomer and the content of BisGMA were fabricated. Discs of each test material with 15.5mm diameter and 1.0mm thickness were prepared (N=3) and light cured. Total and diffuse transmittance values for each sample were measured using a UV/VIS spectrophotometer with the range of readings from 380 to 700 nm. Difference in color was measured using the CIE Lab system.Results. Statistical analysis by one-way ANOVA followed by Tukey's test showed that there was no statistically significant difference in transmittance values between the three unfilled resins. However, with the addition of filler, BisGMA-containing composite resins showed significantly higher transmittance values than the UDMA-and TEGDMA-based composite resins. Regression analysis revealed that there was a linear correlation between the percentage of BisGMA in the resin matrix and the total and diffuse translucency.Significance. The amount of BisGMA used in the resin matrix has a significant effect on the translucency of silica filler-containing dental composite resins. (C) 2009 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.