Reinforcement of acrylic denture base resin by incorporation of various fibers.
Reinforcement of acrylic denture base resin by incorporation of various fibers.
复制标题
通过掺入各种纤维来增强丙烯酸义齿基托树脂。
DOI：
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Pau
中科院分区：
文献类型：
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作者：
San;W. Liang;Pau
本研究旨在评估三种纤维增强后丙烯酸树脂力学性能的改善。将聚酯纤维（PE）、凯夫拉纤维（KF）和玻璃纤维（GF）切成2、4和6 mm长，并以1、2和3%（w/w）的浓度掺入。将树脂和纤维的混合物在70 ° C下在水浴中固化13小时，然后在90 ° C下在70 X 25 X 15 mm石模中固化1小时，所述石模由牙科烧瓶封闭。将固化的树脂块切割成适当的尺寸，并分别按照ASTM规范No.256和ISO规范No.1567的方法测试冲击强度和弯曲强度。在冲击强度测试中使用的样本被重新用于努普硬度测试。结果表明，随着纤维长度和纤维浓度的增加，复合材料的冲击强度有提高的趋势，尤其是纤维长度为3%和6 mm时，复合材料的冲击强度明显高于其他配方。与不含纤维的对照相比，各种配方的弯曲强度没有显著变化。努普硬度的评估揭示了各种制剂的复杂模式。3%、6 mm PE增强树脂的努普硬度与其他配方相当，但不含纤维的对照品除外，但对于临床使用，这不会对丙烯酸基托树脂的优点产生不利影响。得出结论，为提高强度，增强丙烯酸树脂的最佳配方是通过掺入3%，6 mm长的PE纤维。
This study was designed to evaluate improvements in the mechanical properties of acrylic resin following reinforcement with three types of fiber. Polyester fiber (PE), Kevlar fiber (KF), and glass fiber (GF) were cut into 2, 4, and 6 mm lengths and incorporated at concentrations of 1, 2, and 3% (w/w). The mixtures of resin and fiber were cured at 70 degrees C in a water bath for 13 h, then at 90 degrees C for 1 h, in 70 x 25 x 15 mm stone molds, which were enclosed by dental flasks. The cured resin blocks were cut to an appropriate size and tested for impact strength and bending strength following the methods of ASTM Specification No. 256 and ISO Specification No. 1567, respectively. Specimens used in the impact strength test were reused for the Knoop hardness test. The results showed that the impact strength tended to be enhanced with fiber length and concentration, particularly PE at 3% and 6 mm length, which was significantly stronger than other formulations. Bending strength did not change significantly with the various formulations when compared to a control without fiber. The assessment of Knoop hardness revealed a complex pattern for the various formulations. The Knoop hardness of 3%, 6 mm PE-reinforced resin was comparable to that of the other formulations except for the control without fiber, but for clinical usage this did not adversely affect the merit of acrylic denture base resin. It is concluded that, for improved strength the optimum formulation to reinforce acrylic resin is by incorporation of 3%, 6 mm length PE fibers.
影响因子：
5
作者：
GOLDBERG, AJ;BURSTONE, CJ
通讯作者：
BURSTONE, CJ