Paper Title:
Investigation of the Bioactivity of Dental Ceramic / Bioactive Glass Composites Prepared by the Sol Gel Route
  Abstract

Sol-gel derived glasses have been reported to express considerably higher bioactivity than melt-derived ones. The use of the sol-gel method for the fabrication of dental ceramic bioactive glass composites has resulted in composites consisting of an amorphous glassy network into which crystals of Calcium Silicate (CS), Wollastonite (W), leucite (Lt) and Fluorapatite (FAp) are dispersed. Thus, the aim of the present study was the investigation of the bioactivity of sol-gel derived dental ceramic/bioactive glass composites, in the form of powders and in thermally treated disk shaped specimens. Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM) were used to characterize the reacted products. The sol-gel derived dental glass ceramic composites present high bioactivity compared to the respective melt-derived ones, which is attributed to the higher CaO content and the crystallization of bioactive W and CS crystal phases during the fabrication process. However, the powdered samples presented faster HCAp formation compared to the respective specimens, due to their higher surface energy.

  Info
Periodical
Key Engineering Materials (Volumes 396-398)
Main Theme
Edited by
Marcelo Prado and Cecília Zavaglia
Pages
119-122
DOI
10.4028/www.scientific.net/KEM.396-398.119
Citation
O. M. Goudouri, E. Kontonasaki, X. Chatzistavrou, L. Papadopoulou, P. Koidis, K. M. Paraskevopoulos, "Investigation of the Bioactivity of Dental Ceramic / Bioactive Glass Composites Prepared by the Sol Gel Route", Key Engineering Materials, Vols. 396-398, pp. 119-122, 2009
Online since
October 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: B.J.M. Leite Ferreira, M.G.G.M. Duarte, M. Helena Gil, Rui N. Correia, J. Román, Maria Vallet-Regí
581
Authors: G. Stanciu, S.G. Stanciu, C. Dan, Konstantinos M. Paraskevopoulos, Xanthippi Chatzistavrou, Eleana Kontonasaki, Petros Koidis
Abstract:Surface topography plays an important role in determining the functional performance of engineering materials as well as cell-material...
689
Authors: Akemi A. Nogiwa-Valdez, Dora A. Cortés-Hernández, J.M. Almanza-Robles, Alejandra Chávez-Valdez
Abstract:Zirconia-alumina composites with additions of a CaO-SiO2 glass are prepared by uniaxial pressing and sintering. In order to promote...
193
Authors: El-Sayed Ghaith, Toshihiro Kasuga, Masayuki Nogami
Abstract:Amorphous calcium silicate coating on a metallic titanium substrate for hard tissue replacement was prepared by a sol-gel method. Calcium...
235
Authors: Hua Ke, Yu Zhou, De Chang Jia, Cong Qin Ning
Abstract:Hydroxyapatite (HA)/titanium (Ti) composites were successfully fabricated by hot isostatic pressing at 850°C. The microstructure of 7T2HB...
1715