Evaluation of the micro-mechanical and bioactive properties of bioactive glass-dental porcelain composite.
J Mech Behav Biomed Mater
; 86: 77-83, 2018 10.
Article
em En
| MEDLINE
| ID: mdl-29957447
ABSTRACT
The aim of this study was to evaluate microhardness and elastic modulus of a novel sol-gel derived dental ceramic -â¯58S bioactive glass composite (BP67 Bioactive Glass33.3%, Dental Ceramic66.7%) BP671 material by micro-indentation and to investigate its microstructure and bioactivity. The research hypotheses were that the values of microhardness (1) and elastic modulus (2) of the novel bioceramic composite and the commercial dental ceramic will be of the same order. The experimental sol-gel derived ceramics showed similar microstructural characteristics to a commercial feldspathic porcelain, and presence of additional calcium phosphate phases, which contributed its bioactivity. The formation of an apatite-like layer on the materials' surface observed by Fourier Transform Infrared (FTIR)2 spectroscopy, X-ray Diffraction (XRD)3 and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS)4 techniques after 12 days of maintenance in Conventional Simulated Body Fluid (cSBF)5 solution. The BP67 exhibited values of microhardness and modulus of elasticity which were not statistically significant different compared to dental ceramic, indicating the adequate mechanical integrity of the material. The results of this study suggest that the novel bioactive composite could be potentially applied in prosthetic dentistry, while its thermal and optical properties should be investigated in future studies.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Teste de Materiais
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Porcelana Dentária
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Fenômenos Mecânicos
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Vidro
Idioma:
En
Revista:
J Mech Behav Biomed Mater
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Grécia