Nanoindentation Study on Mechanical Properties of Nano-SiO2/Dental Resin Composites

Chao Zha, Jianhua Hu, Ainong Li, Shangyu Huang, Hanxing Liu, Gang Chen, Anqi Lei, Zuoqi Zhang, Bei Li, Zhengzhi Wang
2018 Journal of Materials Science and Chemical Engineering  
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-SiO 2 particles on the mechanical properties of the dental composites was studied as well. The experimental results showed that the incorporation of the nano-SiO 2 particles at low concentrations (up to 10 wt.%) can apparently increase the hardness and elastic
more » ... rdness 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.
doi:10.4236/msce.2018.64008 fatcat:iiwzoh54uzb2lehmbpa6qbbltu