摘要
目的:对纳米复合树脂牙科材料的制备方法进行研究,从工艺上解决纳米复合材料不够致密问题,使之能较多地应用于临床牙科材料中。方法:用双酚A-甲基丙烯酸缩水甘油酯(Bis-GMA)和双甲基丙烯酸二缩三乙二醇酯(TEGDMA)共同作为树脂基质,利用经过表面处理的纳米无机填料中的一种或者几种填料混合添加制备复合材料,同时采用原位分散法用高速搅拌和超声分散等制备工艺来改善纳米填料分散体系,运用DTA、XRD、SEM等实验手段对Bis-GMA/Nano(SiO2-ZrO2)纳米复合树脂材料进行性能测试及结构表征。结果:利用经过硅烷偶联剂表面处理的纳米SiO2和ZrO2可均匀分散在Bis-GMA基体中,所获得纳米颗粒增强体质量分数高达30%复合材料,制备出了一种力学性能好(致密性高、耐磨性强和硬度大)的数控加工用纳米复合树脂牙科材料。结论:该方法制备出的高性能Bis-GMA/nano(SiO2-ZrO2)复合树脂牙科材料,既美观又坚韧,能充分满足临床牙科修复学需要。
Objective To research the preparation method of nano-composite resin dental material for improving the low- density in nanometer composite resin so as to applyit widely in clinical dentistry material field, Methods The composite material was generated by adding one or several kinds of inorganic nanometer packing material with surface treatment to bisphenol A-biglycidyl methacrylate （Bis-GMA） and triethylene glycol dimethacrylate（TEGDMA） which were resin substrates. Orthotope dispersion method was applied to improve the nanometer packing material disperse system with high speed stirring and ultrasound disintegration. The significance testing and structural characterization of Bis-GMA/ Nano（SiO2-ZrO2） composite resin dental material were achieved by using the instrumentation of DTA, XRD, SEM. Results Nano-SiO2 and ZrO2 by silane coupling agent surface-treated could homodisperse in Bis-GMA precursor. The weight of the obtained nanometer particle reached up to 30% of the composite material. A novel kind of digital processing nanometer composite resin in dentistry was prepared with high-density and better-mechanical property. Conclusion The composite resin in dentistry Bis-GMA/nano （SiO2-ZrO2）has beautiful outlook, high-density,and satisfy demands in clinical dentistry prosthetics for high quality material.
出处
《医疗卫生装备》
CAS
2008年第9期1-3,共3页
Chinese Medical Equipment Journal
基金
国家"863"计划项目子课题(G02D8061970)
国家重点实验室开放基金项目(G02D9061310)
