Measurement of Poisson's ratio of dental composite restorative materials
Measurement of Poisson's ratio of dental composite restorative materials
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DOI：
10.1016/j.biomatcrials.2003.09.029
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发表时间：
2004-06-01
期刊：
影响因子：
14
通讯作者：
Lim, CT
中科院分区：
文献类型：
--
作者：
Chung, SM;Yap, AUJ;Lim, CT
本研究的目的是使用静态拉伸测试方法确定树脂基牙科复合材料的泊松比。本次调查中使用的材料来自同一制造商 (3M ESPE)，包括微填充 (A110)、迷你填充（Z100 和 Filtek Z250）、聚酸改性 (F2000) 和可流动 (Filtek Flowable [FF]) 复合材料。材料的泊松比是在37℃水中调理1周后测定的。使用单轴测试系统以0.5毫米/分钟的十字头速度进行拉伸测试。使用单向方差分析/事后 Scheffe 检验和 Pearson 相关检验以 0.05 的显着性水平对数据进行分析。平均泊松比 (n = 8) 范围为 0.302 至 0.393。 FF 的泊松比明显高于所有其他评估的复合材料，并且 A110 的泊松比高于 Z100、Z250 和 F2000。填料体积分数较低的材料的泊松比较高。 (C) 2003 Elsevier Ltd. 保留所有权利。
The aim of this study was to determine the Poisson ratio of resin-based dental composites using a static tensile test method. Materials used in this investigation were from the same manufacturer (3M ESPE) and included microfill (A110), minifill (Z100 and Filtek Z250), polyacid-modified (F2000), and flowable (Filtek Flowable [FF]) composites. The Poisson ratio of the materials were determined after 1 week conditioning in water at 37degreesC. The tensile test was performed with using a uniaxial testing system at crosshead speed of 0.5 mm/min. Data was analysed using one-way ANOVA/post-hoc Scheffe's test and Pearson's correlation test at significance level of 0.05. Mean Poisson's ratio (n = 8) ranged from 0.302 to 0.393. The Poisson ratio of FF was significantly higher than all other composites evaluated, and the Poisson ratio of A110 was higher than Z100, Z250 and F2000. The Poisson ratio is higher for materials with lower filler volume fraction. (C) 2003 Elsevier Ltd. All rights reserved.