Fracture toughness of zirconia nanoparticle-filled dental composites

被引：0
作者：
K. S. Chan
D. P. Nicolella
B. R. Furman
S. T. Wellinghoff
H. R. Rawls
S. E. Pratsinis
机构：
[1] Southwest Research Institute®,Particle Technology Laboratory, Department of Mechanical and Process Engineering
[2] University of Texas Health Science Center,undefined
[3] ETH Zurich,undefined
[4] Southwest Research Institute®,undefined
来源：
Journal of Materials Science | 2009年 / 44卷
关键词：
Fracture Toughness; High Fracture Toughness; Crack Deflection; Tetragonal ZrO2; Dental Composite;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The fracture toughness of dental composites containing zirconia nanoparticles dispersed in a bisphenol A glycol dimethacrylate-based monomer blend (GTE) was studied for several yttria contents. Three-point bend test bars with and without a notch were tested at ambient temperature to determine elastic modulus, flexure strength, and fracture toughness. The ZrO2 nanoparticles increased the fracture toughness of the nanocomposites compared to previous results for the matrix and Schott glass-filled nanocomposites. X-ray diffraction analyses revealed mostly tetragonal ZrO2 in the nanocomposites before and after testing, in agreement with a theoretical analysis. The enhancement in fracture toughness in ZrO2-filled nanocomposites was caused mainly by the higher values of particle toughness and interface toughness in GTE/ZrO2 compared to those of GTE/Schott glass nanocomposites.
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页码：6117 / 6124
页数：7
相关论文
共 77 条
[1]  
Furman B(2000)undefined Crit Rev Biomed Eng 28 439-undefined
[2]  
Rawls HR(2000)undefined J Korean Res Soc Dent Mater 27 3-undefined
[3]  
Wellinghoff ST(1999)undefined Dent Mater 15 120-undefined
[4]  
Dixon H(1999)undefined Dent Mater 15 219-undefined
[5]  
Nicolella D(1997)undefined ACS Polym Prepr 38 167-undefined
[6]  
Rawls HR(2005)undefined Adv Funct Mater 15 830-undefined
[7]  
Furman B(2008)undefined Colloid Surf A 315 79-undefined
[8]  
Wellinghoff ST(2007)undefined Eng Fract Mech 74 1857-undefined
[9]  
Nicolella D(2000)undefined Acta Mater 50 4555-undefined
[10]  
Dixon H(1982)undefined J Mater Sci 17 240-undefined
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