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| | >=Objective To determine the rheological properties of the photo-polymerized composite resin reinforced with retentive filler (RF) and its rheological difference with normal filler (NF)composite resin.Methods Rheological properties of the composite resins,such as viscosity,shear stress and creep compliance,were measured with dynamic stress rheometer at room temperature (25℃)Results The viscosity of the composite resin reinforced with RF is higher than that of NF compositeresin (P<0.01);at the beginning,the ... | | 目的:探讨含RF 填料复合树脂的流变性及其与普通填料复合树脂的差异。方法:采用动态应力流变仪DSR-200,在室温(25℃)时测试含RF 填料复合树脂和普通填料复合树脂的流变性,如粘度、剪切应力和柔量等。结果:含RF 填料复合树脂的粘度大于普通填料复合树脂(P<0.01);随剪切应力的增大,前者的粘度开始基本保持不变,而后者会降低,当剪切应力大于203.18Pa 时,两者的粘度随剪切应力的增大而增加;含RF 填料复合树脂的柔量明显小于普通填料复合树脂(P<0.01)。结论:两种复合树脂的流变性有较大差异,因而其临床应用特性也就有所不同。 | | 文摘来源 | |   |
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