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| 纳米义齿基托树脂的制备及挠曲性能的研究 | |
| 引用本文： | 刘平先,许艳慧,肖群,李志安. 纳米义齿基托树脂的制备及挠曲性能的研究[J]. 口腔材料器械杂志, 2011, 20(2): 66-70 |
| 作者姓名： | 刘平先 许艳慧 肖群 李志安 |
| 作者单位： | 1. 湖北省口腔基础医学重点实验室,省部共建国家重点实验室培育基地,武汉大学口腔医学院,武汉,430079 2. 广州军区机关门诊部口腔科,广州 |
| 摘 要： | 目的在聚甲基丙烯酸甲酯粉（PMMA）中添加有机改性的蒙脱土制备纳米义齿基托树脂,以增强义齿基托树脂的挠曲性能。方法将蒙脱土经十六烷基三甲基溴化铵改性,形成有机化改性的蒙脱土,将其加入牙托粉中形成混和粉,混和粉与热凝牙托水调和后经加热固化形成纳米义齿基托树脂。用X射-线衍射（XRD）和透射电子显微镜（TEM）表征了固化后材料的结构,用三点挠曲试验测量固化后材料的挠曲强度和挠曲弹性模量。用一维方差分析法评价有机化蒙脱土的量对挠曲强度的挠曲弹性模量的影响。结果 XRD、TEM证实当蒙脱土在混合粉中的量为3%和5%时,蒙脱土在PMMA基质中形成部份剥离和插层结构;当蒙脱土在混合粉中的量为3%时,挠曲强度达最大,进一步增加蒙脱土的量,材料的挠曲强度降低。当混和粉中有机蒙脱土的量在1%~10%时,挠曲弹性模量随有机蒙脱土的量增加而增加。一维方差分析表明当混和粉中有机蒙脱土的量为3%时,实验组的挠曲强度与挠曲弹性模量均存在显著性差异（n=5,P〈0.05）。结论牙托粉中蒙脱土的量对义齿基托树脂的挠曲性能有显著性影响。 |
| 关 键 词： | 纳米树脂 义齿基托树脂 挠曲强度 蒙脱土 |
The preparation and flexural properties of Nano-denture base resin |
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| Liu Pingxian,Xu Yanhui,Xiao Qun,Li Zhian. The preparation and flexural properties of Nano-denture base resin[J]. Chinese Journal of Dental Materials and Devices, 2011, 20(2): 66-70 | |
| Authors: | Liu Pingxian Xu Yanhui Xiao Qun Li Zhian |
| Affiliation: | Liu Pingxian1,Xu Yanhui2,Xiao Qun1,Li Zhian1(1.Key Laboratory of Stomatologic Basic Medicine of Hubei Province,Training Baseof the State Key Lab of the Province for Joint Construction,Wuhan 430079,2.Stomatology Department ofO.P.D of the Organs of the Guangzhou Military Zone) |
| Abstract: | Objective The denture bases nanocomposites were prepared by adding organic montormollontrite(OMMT) into poly(methyl methacrylate) matrix.Methods The resulting composites were characterized by XRD,TEM and ISTRON 3365 flexural strength testing systems.One-way analysis of variance and Tukey's test were used to compare the difference in flexural strength and flexural modulus.Results The exfoliated-intercalated and intercalated denture base nanocmposite was formed when the content of OMMT was 3 wt % and 5 wt % i... |
| Keywords: | Nanocomposite Denture base resin Flexural strength Montormollontrite |
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