Paper Title:
Magnesium Based Sol-Gel Derived Bioactive Glass Ceramics for Dental Tissue Regeneration
  Abstract

Scaffold-based tooth engineering is currently the most popular approach towards replacing dental tissues or even engineering a bio-tooth. Although, various scaffold materials have been employed in tooth regeneration, the scaffold-based tooth design has, until now, achieved only limited success. Recently, bioactive Mg-based ceramics have attracted interest as Mg plays an important role on skeletal metabolism and affects the quality and structure of hard dental tissues. Mg has been reported to improve the mechanical properties of calcium phosphate ceramics, control biodegradation rate and stabilize the cell-material interface improving cell attachment and growth. The aim of this study was the development of an experimental Mg-based ceramic material, with enhanced bioactivity and adequate mechanical properties, in order to be potentially used in dental tissue regeneration. The Mg-based ceramic was prepared by the sol-gel method, while the stabilization was performed at 1300, 1400 and 1450oC in order a fully crystalline material to be obtained. The characterization of the materials -before and after immersion is Simulated Body Fluid (SBF)- was performed by Fourier Tranform Infrared Spectroscopy (FTIR), X-Ray Diffractometry (XRD) and Scanning Electron Microscopy associated with an EDS analyzer (SEM-EDS), while the flexural strength of uniaxially pressed pellets was measured using a universal testing machine for 3- point bending tests (Instron 3344). FTIR spectra and XRD patterns of all powder samples before immersion in SBF solution confirmed the presence of three crystalline phases; akermanite, merwinite and diopside. The onset of apatite formation on the surface of all powders was observed even after three days of immersion, while the apatite formation on the surface of the sintered pellets was slightly delayed. Flexural strength values were in the range of 30Mpa. In conclusion, Mg-based glass-ceramics attain adequate mechanical integrity and high rate of bioactivity and could be potentially used in the construction of ceramic scaffolds for dental tissue regeneration.

  Info
Periodical
Key Engineering Materials (Volumes 493-494)
Main Theme
Edited by
Eyup Sabri Kayali, Gultekin Goller and Ipek Akin
Pages
884-889
DOI
10.4028/www.scientific.net/KEM.493-494.884
Citation
O. M. Goudouri, E. Theodosoglou, A. Theocharidou, E. Kontonasaki, L. Papadopoulou, X. Chatzistavrou, P. Koidis, K. M. Paraskevopoulos, "Magnesium Based Sol-Gel Derived Bioactive Glass Ceramics for Dental Tissue Regeneration", Key Engineering Materials, Vols. 493-494, pp. 884-889, 2012
Online since
October 2011
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: Bin Xiao, Wei Zhong Yang, Da Li Zhou, Guang Fu Yin, Huai Qing Chen
Abstract:Bioactive composite of apatite-wollastonite(AW)/β-tricalcium phosphate (β-TCP) was prepared. The nucleation and growth of bio-apatite on the...
1692
Authors: Ourania Menti Goudouri, Xanthippi Chatzistavrou, Eleana Kontonasaki, Nikolaos Kantiranis, Lambrini Papadopoulou, K. Chrissafis, Konstantinos M. Paraskevopoulos
Abstract:Thermal treatment of bioactive glasses can affect their microstructure and thus their bioactivity. The aim of this study was the...
131
Authors: Marziyeh Abbasi-Shahni, Saeed Hesaraki, Ali Asghar Behnam-Ghader, Masoud Hafezi-Ardakani
Abstract:In this study, nanocomposites based on of β-tri calcium phosphate (β-TCP) and 2.5-10 wt% merwinite nanoparticles were prepared and sintered...
582
Authors: M. Manda, Ourania Menti Goudouri, Lambrini Papadopoulou, Nikolaos Kantiranis, T. Zorba, K. Chrissafis, Konstantinos M. Paraskevopoulos, Petros Koidis
Abstract:End temperature of the firing cycle, during processing of dental ceramics, directs the interaction of both sintering and crystallization...
80
Authors: George Theodorou, Ourania Menti Goudouri, Lambrini Papadopoulou, Nikolaos Kantiranis, Subramaniam Yugeswaran, Akira Kobayashi, Konstantinos M. Paraskevopoulos
Abstract:The clinical use of plasma-sprayed hydroxyapatite (HA) coatings on metal implants has been widely investigated as the HA coating can achieve...
447