Novel F-releasing Composite with Improved Mechanical Properties
Novel F-releasing Composite with Improved Mechanical Properties
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DOI：
10.1177/0022034508328254
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发表时间：
2009-01-01
影响因子：
7.6
通讯作者：
Diwan, R. M.
中科院分区：
文献类型：
--
作者：
Ling, L.;Xu, X.;Diwan, R. M.
近年来，作者一直在开发新型的含三元氟化锆螯合物的牙科释氟复合材料。本研究的目的是通过改进单体和光引发剂的配方来改善这些复合材料的物理和机械性能。假设亲水单体的减少和光引发剂的改进可以降低吸水性并显着提高复合材料的力学性能。采用傅里叶变换近红外光谱（FT-NIR）研究了不同光引发剂组成的复合材料的转化率。测试了含有乙氧基化双酚A二甲基丙烯酸酯（EBPADMA）、1，6-己二醇二甲基丙烯酸酯（HDDMA）、三甘醇二甲基丙烯酸酯（TEGDMA）和2，2-双[ 4-（2-羟基-3-甲基丙烯酰氧基丙氧基）苯基]-丙烷（BisGMA）的不同组成的十种实验复合材料的挠曲强度、粘度和吸水性。含有20%合成的氟化物释放单体、30%BisGMA、30%EBPADMA和20%HDDMA的实验复合材料显示出显著更高的氟化物释放和再充电，但物理和机械性能与含有40%BisGMA、40%EBPADMA和20%HDDMA的对照复合材料相似。
In recent years, the authors have been developing novel fluoride-releasing dental composites containing ternary zirconium fluoride chelates. The aim of this study was to improve the physical and mechanical properties of these composites by improving the formulation of the monomers and photoinitiators. The hypothesis was that reduction of hydrophilic monomers and improvement of the photo initiators could reduce water sorption and significantly increase the mechanical properties of the composite. The degree of conversion of the composites containing different compositions of photoinitiators was studied by Fourier transform near-infrared spectroscopy (FT-NIR). Ten experimental composites containing different compositions of ethoxylated bisphenol-A dimethacrylate (EBPADMA), 1,6-hexanediol dimethacrylate (HDDMA), triethylene glycol dimethacrylate (TEGDMA), and 2,2-bis[ 4-(2-hydroxy-3-methacryloyloxypropoxy) phenyl]-propane (BisGMA) were tested for flexural strength, viscosity, and water sorption. The experimental composite containing 20% synthesized fluoride-releasing monomer, 30% BisGMA, 30% EBPADMA, and 20% HDDMA showed significantly higher fluoride release and recharge, but physical and mechanical properties similar to those of the control composite containing 40% BisGMA, 40% EBPADMA, and 20% HDDMA.