中华口腔医学研究杂志(电子版) ›› 2011, Vol. 5 ›› Issue (01) : 12 -18. doi: 10.3877/cma.j.issn.1674-1366.2011.01.003 × 扫一扫
基础研究
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Wen-yun ZHANG1,†(), Xing-xing LI1, Qing-hua CHEN1, Yan-bo YUAN1, Yu-hong XIAO1, Li-dou YANG1
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张文云, 李星星, 陈庆华, 袁艳波, 肖玉鸿, 杨立斗. 晶须-颗粒复合体对光固化复合树脂力学性能的影响[J/OL]. 中华口腔医学研究杂志(电子版), 2011, 5(01): 12-18.
Wen-yun ZHANG, Xing-xing LI, Qing-hua CHEN, Yan-bo YUAN, Yu-hong XIAO, Li-dou YANG. Effect of whisker-particles compound on mechanical properties of light-curing composite resins[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2011, 5(01): 12-18.
目的
研究硼酸铝晶须-二氧化硅颗粒(ABw-SiO2)复合体对光固化牙科复合树脂弯曲性能的影响。
方法
以ABw 和SiO2 比例、正硅酸乙酯(TEOS)用量、硅烷偶联剂用量和填料复合体用量作为实验因素,设计L9(3)4 正交试验,制作试件并测试其弯曲强度和弯曲弹性模量;利用扫描电镜观察熔附体形貌,并对弯曲性能最优组与最差组试件行断面扫描。 以未加填料的基质组作为阴性对照,Z100(A2 色)为阳性对照。
结果
最优组弯曲强度达(123.14±17.37)MPa,与基质组差异有统计学意义,与Z100(A2)复合树脂间差异无统计学意义;弯曲弹性模量为(8.75±0.459)GPa。
结论
正交试验因素对光固化牙科树脂的弯曲性能有显著影响;ABw-SiO2 填料复合体可以显著提高光固化牙科树脂的弯曲性能。
Objective
This study aimed to investigate the effect of aluminium borate whisker-SiO2 particles (ABw-SiO2) compound on the flexural properties of light-curing composite resins.
Methods
The influence of the mass ratio of ABw and nano-SiO2 particle, the dosage of TEOS, silane coupling agent and filler compound was studied. The orthogonal experiment of L9(3)4 was designed, using flexural properties as evaluation targets. The effects of the surface morphology of AlBw and the specimen fracture surfaces were characterized by SEM. The unfilled resin was used as negative control, while Z100 (shade A2) used as positive control.
Results
The optimal group had a flexural strength of (123.14 ± 17.37) MPa. It was significantly higher than the unfilled resin group (P<0.05), albeit there was no significant difference between the experimental composite and Z100. The optimal group had a flexural modulus of (8.75±0.45) GPa.
Conclusions
The influence of the mass ratio of ABw and nano-SiO2 particle, the dosage of TEOS, silane coupling agent and filler compound resulted in a significant increase of the flexural properties of dental composite resins by orthogonal design. ABw-SiO2 compound could significantly improve the flexural properties of light-curing dental composites.