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Multispectroscopic investigation of silanised glass particles for dental fillers

S. SIMON1,* , R.V. F. TURCU1, T. RADU1, M. MOLDOVAN2, V. SIMON1

Affiliation

  1. Babes - Bolyai University, Faculty of Physics, 400084 Cluj-Napoca, Romania
  2. Babes - Bolyai University, Raluca Ripan Institute of Chemistry, 400294 Cluj-Napoca, Romania

Abstract

Aluminosilicate glasses containing similar aluminium oxide amount, considered as components of dental glass-ionomer cements are investigated. The paper aims a correlation between the surface structure of dental glass fillers and their bioactivity in simulated body fluid (SBF). Analyses carried out by Fourier Transform Infrared (FTIR), Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR) and X-ray photoelectron spectroscopy (XPS) on samples before and after immersion in SBF show differences regarding both structural units and bioactivity, function of silanisation degree. The investigation methods used in this study complementary contribute to highlight the changes of the local structure on the surface interacting with SBF. The results show that using gamma-methacryloxypropyl trimethoxysilane the less silanised glass filler is more bioactive than the highly silanised ones..

Keywords

Glass ionomer, Silanisation; Bioactivity, MAS-NMR, FTIR, XPS.

Submitted at: Sept. 24, 2009
Accepted at: Nov. 19, 2009

Citation

S. SIMON, R.V. F. TURCU, T. RADU, M. MOLDOVAN, V. SIMON, Multispectroscopic investigation of silanised glass particles for dental fillers, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 11, pp. 1660-1670 (2009)