牙科复合修复材料泊松比的测量

Measurement of Poisson's ratio of dental composite restorative materials.

作者信息

Chung Sew Meng, Yap Adrian U Jin, Koh Wee Kiat, Tsai Kuo Tsing, Lim Chwee Teck

机构信息

Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore, 5 Lower Kent Ridge Road, Singapore 119074, Singapore.

出版信息

Biomaterials. 2004 Jun;25(13):2455-60. doi: 10.1016/j.biomaterials.2003.09.029.

DOI:10.1016/j.biomaterials.2003.09.029

PMID:14751729

Abstract

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 37 degrees C. 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.

摘要

本研究的目的是使用静态拉伸试验方法测定树脂基牙科复合材料的泊松比。本研究中使用的材料来自同一制造商（3M ESPE），包括微填料（A110）、小填料（Z100和Filtek Z250）、聚酸改性（F2000）和可流动（Filtek Flowable [FF]）复合材料。材料在37℃水中浸泡1周后测定其泊松比。使用单轴测试系统以0.5 mm/min的十字头速度进行拉伸试验。数据采用单向方差分析/事后Scheffe检验和Pearson相关检验进行分析，显著性水平为0.05。平均泊松比（n = 8）范围为0.302至0.393。FF的泊松比显著高于所有其他评估的复合材料，A110的泊松比高于Z100、Z250和F2000。填料体积分数较低的材料泊松比更高。