Linked Life Data

14607497

Source:http://linkedlifedata.com/resource/pubmed/id/14607497

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-11-10
pubmed:abstractText
The anodic plasma-chemical (APC) process was used to modify CP titanium surfaces for biomedical applications. This technique allows for the combined chemical and morphological modification of titanium surfaces in a single process step. The resulting conversion coatings, typically several micrometer thick, consist mainly of titanium oxide and significant amounts of electrolyte constituents. In this study, a new electrolyte was developed containing both calcium-stabilized by complexation with EDTA-and phosphate ions at pH 14. The presence of the Ca-EDTA complex, negatively charged at high pH, favors incorporation of high amounts of calcium into the APC coatings during the anodic (positive) polarization. The coating properties were evaluated as a function of the process variables by XPS, GD-OES, Raman spectroscopy, SEM and tensile testing, and compared to those of calcium-free APC coatings and uncoated CP titanium surfaces. The maximal Ca/P atomic ratio in the coating produced with the new APC electrolyte was approximately 1.3, with higher Ca concentrations than reported in conventional APC coatings. The dissolution behavior of the incorporated, amorphous CaP phases was investigated by exposure to a diluted EDTA solution. The coatings produced in the new electrolyte system exhibit favorable mechanical stability. The new APC technology is believed to be a versatile and cost-effective coating technique to render titanium implant surfaces bioactive.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0142-9612
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
593-606
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Anodic plasma-chemical treatment of CP titanium surfaces for biomedical applications.
pubmed:affiliation
Laboratory for Surface Science and Technology, Department of Materials, Swiss Federal Institute of Technology (ETH), BioInterface Group, CH-8092 Zurich, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies