Synthesis of Silica Hybrid Nanoparticles and the Effect of Their Addition on the Hardness of the Dental Nanocomposites

Abstract

The objective of this study is to investigate the effect of silica hybrid nanoparticles on the hardness of the dental nanocomposites. The silica hybrid nanoparticles were synthesized by sol-gel method. The powders were modified with 3-methacryloxy-propyltrimethoxy silane (γ-MPS) either by co-condensation method or one-pot method. The silanized silica were then mixed with  a mixture of bisglycidyl methacrylate (BisGMA), triethylene glycol methacrylate (TEGDMA), camphorquinone (CQ) and dimethylaminoethyl methacrylate (DMAEMA) to form dental nanocomposites.  The hardness of the nanocomposites were determined using vickers hardness. The results shown that hardness of the dental composites using silica hybrid nanoparticles synthesized via one-pot method was higher compared to the synthesized via co-condensation method. Transmission Electron Microscope (TEM), and Fourier Transform Infrared Spectroscopy (FTIR) were used for characterization.