Document Detail

Bone-like apatite layer formation on the new resin-modified glass-ionomer cement.
MedLine Citation:
PMID:  18622768     Owner:  NLM     Status:  MEDLINE    
In this study, the apatite-forming ability of the new resin-modified glass-ionomer cement was evaluated by soaking the cement in the simulated body fluid. The Fourier Transform Infrared (FTIR) spectrometer and X-Ray Diffraction (XRD) patterns of the soaked cement pointed to the creation of poorly crystalline carbonated apatite. It was found that the releasing of calcium ions from the soaked cement will dominate the undesirable effect of polyacrylic acid on apatite formation. Consequently, the ionic activity products (IAPs) of the apatite in the surrounding medium increased which accelerated apatite nucleation induced by the presence of the Si-OH and COOH groups. Accordingly, the apatite nuclei started to form via primary heterogeneous nucleation and continued by secondary nucleation. Therefore, nucleation and growth occurs as in the layer-by-layer mode so that finite numbers of monolayers are produced. Subsequent formation of film occurs by formation of discrete nuclei (layer-plus-island or SK growth).
Jhamak Nourmohammadi; S K Sadrnezhaad; A Behnam Ghader
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Publication Detail:
Type:  Journal Article     Date:  2008-07-15
Journal Detail:
Title:  Journal of materials science. Materials in medicine     Volume:  19     ISSN:  0957-4530     ISO Abbreviation:  J Mater Sci Mater Med     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-09-26     Completed Date:  2008-12-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9013087     Medline TA:  J Mater Sci Mater Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3507-14     Citation Subset:  IM    
Biomaterial Department, Material and Energy Research Center, P.O. Box 14155-4777, Tehran, Iran.
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MeSH Terms
Acrylic Resins / chemistry*
Apatites / chemistry*
Biocompatible Materials / chemistry
Body Fluids / chemistry
Bone Cements / chemistry
Bone Substitutes / chemistry
Ceramics / chemistry
Computer Simulation
Glass Ionomer Cements / chemistry*
Microscopy, Electron, Scanning
Spectroscopy, Fourier Transform Infrared
Surface Properties
X-Ray Diffraction
Reg. No./Substance:
0/Acrylic Resins; 0/Apatites; 0/Biocompatible Materials; 0/Bone Cements; 0/Bone Substitutes; 0/Ceramics; 0/Glass Ionomer Cements

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