纳米金刚石表面改性对义齿黏附剂黏度的影响

目的:观察不同表面处理的纳米金刚石作为功能填料加入到高分子树脂类义齿黏附剂中,对义齿黏附剂黏度产生的影响。方法:以不同比例配方的改性和非改性纳米金刚石作为功能填料,加入到义齿黏附剂中,测试其黏度。采用SPSS17.0软件包对数据进行统计学分析。结果:添加比例在0.1wt%以下时,义齿黏附剂黏度随着比例的增加而下降;0.1wt%时,黏度降低最显著;添加比例在0.1wt%以上时,义齿黏附剂黏度随着比例的增加而增加。金刚石改性与否对黏度的影响有显著差异。结论:偶联剂化学接枝到金刚石表面,改性后的金刚石在乙醇中的分散稳定性得到提高;适当比例的纳米金刚石能显著降低义齿黏附剂的黏度,增加其流动性;同时,改性纳米金刚石的作用显著高于未经改性的金刚石。

Effect of surface modified nano-diamond on viscosity of dental adhesives

PURPOSE: Different surface modified ultrafine-diamond(UFD) was added into dental adhesives as filler,then the influence of dental adhesive properties was observed.The main matrix of dental adhesive was high polymer resin.METHODS: Different content of non-modified UFD(n-UFD) or modified UFD(m-UFD) were added into dental adhesives,then the viscosity of materials were measured.The data was processed with SPSS17.0 software package.RESULTS: The viscosity of dental adhesives was decreased when the proportion of UFD was less than 0.1wt%,especially when it was 0.1wt%;but was significantly improved when the proportion was more than 0.1wt%.The effect of UFD and surface-modified UFD on the viscosity was significantly different.CONCLUSIONS:The results show that silane coupling was chemically-grafted on the surface of UFD,the dispersion and stability of UFD in ethanol was improved;And a quantity of UFD with special content could reduce the viscosity of dental adhesives and improve the flowability obviously.The m-UFD was superior to n-UFD.