Ceramics-Silikáty 56, (4) 331 - 340 (2012) |
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SYNTHESIS AND CHARACTERIZATION OF BIOACTIVE GLASS/FORSTERITE NANOCOMPOSITES FOR BONE AND DENTAL IMPLANTS
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Kamalian Reza 1, Yazdanpanah Abolfazl 1, Moztarzadeh Fathollah 1,
Ravarian Roya 2,
Moztarzadeh Zoha 3,
Tahmasbi Mohammad 4,
Mozafari Masoud 5,2
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1 Biomaterials Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology,
P. O. Box: 15875-4413, Tehran, Iran
2 School of Chemical and Biomolecular Engineering, The University of Sydney,
New South Wales, NSW 2006, Australia
3 Institute of Bioinformatic, Münster University, Münster, Germany
4 School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
5 Helmerich Advanced Technology Research Center, School of Material Science and Engineering,
Oklahoma State University, OK 74106, USA
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Keywords: Nanocomposite, Bioactive CaO–P2O5–SiO2 glass, Forsterite bioceramic, Sol-gel method, Bone implant
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In this research, bioactive glass (BG) of the type CaO–P2O5–SiO2 and nanocrystalline forsterite (NF) bioceramic were
successfully synthesized via sol–gel processing method. Heat-treatment process was done to obtain phase-pure nanopowders.
After characterization of each sample, the nanocomposite samples were prepared by cold pressing method and sintered at
1000oC. The samples were fully characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM),
energy dispersive spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR) analyses. The average nanocrystallite
size was determined using the Debye-Scherrer’s formula 19.6 nm. The bioactivity was examined in vitro with respect to
the ability of hydroxyapatite (HAp) layer to form on the surfaces as a result of contact with simulated body fluid (SBF).
According to the obtained results, the prepared nanocomposite enhances the fracture toughness of the BG matrix without
deteriorating its intrinsic properties as bioactivity. |
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