TITLE:
Nanoindentation Study on Mechanical Properties of Nano-SiO2/Dental Resin Composites
AUTHORS:
Chao Zha, Jianhua Hu, Ainong Li, Shangyu Huang, Hanxing Liu, Gang Chen, Anqi Lei, Zuoqi Zhang, Bei Li, Zhengzhi Wang
KEYWORDS:
Indentation, SiO2 Nanoparticles, Dental Resin Composites, Mechanical Properties
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.6 No.4,
April
12,
2018
ABSTRACT: The micro/nano-scale indentation tests were performed to explore the performance of bisphenol-α-glycidyl methacrylate (Bis-GMA)/triethylene glycol dimethacrylate (TEGDMA) dental resin composites. The effect of the filling content of nano-SiO2 particles on the mechanical properties of the dental composites was studied as well. The experimental results showed that the incorporation of the nano-SiO2 particles at low concentrations (up to 10 wt.%) can apparently increase the hardness and elastic modulus of the dental rein composites. The plasticity index indicates a best elastic recovery capability at a proper amount (4 wt.%) of the nanoparticles. Combined with the infrared spectrum, the mechanical enhancement mechanisms of the dental resin composites were analyzed.