Manufacture and cytotoxicity of a lead-free piezoelectric ceramic as a bone substitute-consolidation of porous lithium sodium potassium niobate by cold isostatic pressing / 国际口腔科学杂志·英文版
International Journal of Oral Science
;
(4): 99-104, 2009.
Article
in English
| WPRIM
| ID: wpr-269729
ABSTRACT
<p><b>AIM</b>The piezoelectric properties and cytotoxicity of a porous lead-free piezoelectric ceramic for use as a direct bone substitute were investigated.</p><p><b>METHODOLOGY</b>Cold isostatic pressing (CIP) was applied to fabricate porous lithium sodium potassium niobate (Li0.06Na0.5K0.44) NbO3 specimens using a pore-forming method. The morphologies of the CIP-processed specimens were characterized and compared to those of specimens made by from conventional pressing procedures. The effects of the ceramic on the attachment and proliferation of osteoblasts isolated from the cranium of 1-day-old Sprague-Dawley rats were examined by a scanning electron microscopy (SEM) and methylthiazol tetrazolium (MTT) assay.</p><p><b>RESULTS</b>The results showed that CIP enhanced piezoelectricity and biological performance of the niobate specimen, and also promoted an extracellular matrix-like topography of it. In vitro studies showed that the CIP-enhanced material had positive effects on the attachment and proliferation of osteoblasts.</p><p><b>CONCLUSION</b>Niobate ceramic generated by CIP shows a promise for being a piezoelectric composite bone substitute.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Osteoblasts
/
Oxides
/
Potassium
/
Pressure
/
Skull
/
Stress, Mechanical
/
Surface Properties
/
Tetrazolium Salts
/
Thiazoles
/
Biocompatible Materials
Limits:
Animals
Language:
English
Journal:
International Journal of Oral Science
Year:
2009
Type:
Article
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