Linked Life Data

9490218

Source:http://linkedlifedata.com/resource/pubmed/id/9490218

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-3-3
pubmed:abstractText
Implants that were coated with hydroxyapatite ceramic (H-A.C.) under atmospheric condition in vivo often showed local areas of delamination. By applying the H-A.C. coating using the vacuum plasma spraying (VPS) technique, the mechanical characteristics of the coating was decidedly improved. We used a standardized rabbit model to compare a coating produced by this new technique with an implant conventionally plasma sprayed under atmospheric condition (APS). Cylindrical implants, 6 x 4 mm in size with a region flattened to a depth of 800 microns, were inserted into distal rabbit femurs underneath the patella. The flattened surfaces were coated with either a 150-micron APS-H-A.C. layer or a 150-micron VPS-H-A.C. layer plasma sprayed on an underlying 50-micron porous titanium layer. The animals were killed after 84 or 365 days. After 84 days histomorphologic evaluation revealed that more than 86% of each surface was covered with mature bone, while the VPS-H-A.C. coating demonstrated an almost two times greater tensile strength than the APS-H-A.C. coating. After 365 days both coatings showed a bony coverage of more than 94%. Again the tensile strength testing revealed much higher values for the VPS-H-A.C. coating. This study demonstrates that after 84 days as well as after 365 days in vivo, the VPS-H-A.C. coating had a significantly greater load capacity than an H-A.C. coating applied under atmospheric condition, and an equal affinity for bone.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
D
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1432-9417
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
335-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
[Animal experiments for testing a hydroxyapatite ceramic coating under vacuum conditions].
pubmed:affiliation
Klinik für Zahn-, Mund-, Kiefer- und Plastische Gesichtschirurgie, Medizinische Fakultät, RWTH Aachen.
pubmed:publicationType
Journal Article, English Abstract