Vallittu P K
NIOM-Scandinavian Institute of Dental Materials, Haslum, Norway.
J Prosthodont. 1998 Sep;7(3):170-6. doi: 10.1111/j.1532-849x.1998.tb00200.x.
This study compared weave patterns and glass compositions of five glass fiber materials found in commercial fiber-reinforced dental composites.
A scanning electron microscope (SEM) was used to investigate the woven structure of five glass fiber products, and an energy-dispersive x-ray spectrometer (SEM/EDS) was used to determine the elemental composition of these glass fibers in the bulk and at the surface of the fiber. Five fibers of each product were analyzed.
The fiber products were either unidirectional rovings or bidirectional weaves. More precisely, the woven structures were linen weave, twill weave, or twill weave ribbon. SEM/EDS analysis revealed that the composition of the glass fibers was typical for E (electrical)-glass fibers with one exception. One product intended for use in fixed prosthodontics included unidirectional fibers with a composition consistent with a modified high-tensile-strength R-glass. Boron oxide found on the surface of glass fibers would likely contribute to an increased potential for corrosion of fiber-reinforced composite.
The predominant fiber composition in these products is E-glass. Because the degree of hydrolytic stability of polymer-fiber composites over time may lead to material failure in permanent restorations, this property should be investigated further.
本研究比较了市售纤维增强牙科复合材料中五种玻璃纤维材料的编织图案和玻璃成分。
使用扫描电子显微镜（SEM）研究五种玻璃纤维产品的编织结构，并使用能量色散X射线光谱仪（SEM/EDS）测定这些玻璃纤维在纤维整体和表面的元素组成。对每种产品的五根纤维进行了分析。
纤维产品为单向粗纱或双向编织。更确切地说，编织结构为平纹编织、斜纹编织或斜纹编织带。SEM/EDS分析表明，玻璃纤维的成分是典型的E（电气）玻璃纤维，但有一种产品除外。一种用于固定修复的产品包含单向纤维，其成分与改性高强度R玻璃一致。在玻璃纤维表面发现的氧化硼可能会增加纤维增强复合材料的腐蚀可能性。
这些产品中主要的纤维成分是E玻璃。由于聚合物-纤维复合材料随时间的水解稳定性程度可能导致永久修复体材料失效，因此应进一步研究该性能。
