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Calcium Aluminate Coated and Uncoated Free Form Fabricated CoCr Implants: A Comparative Study in Rabbit
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Experimental Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
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2009 (English)In: Journal of Biomedical Materials Research - Part B Applied Biomaterials, ISSN 1552-4973, Vol. 91B, no 1, 122-127 p.Article in journal (Refereed) Published
Abstract [en]

The purpose of this study was to compare the integration in bone of uncoated free form fabricated cobalt chromium (CoCr) implants to the same implant with a calcium aluminate coating. The implants of cylindrical design with a pyramidal surface structure were press-fit into the limbs of New Zealand white rabbits. After 6 weeks, the rabbits were sacrificed, and samples were retrieved and embedded. Ground sections were subjected to histological analysis and histomorphometry. The section counter part was used for preparing an electron transparent transmission electron microscopy sample by focused ion beam milling. Calcium aluminate dip coating provided a significantly greater degree of bone contact than that of the native CoCr. The gibbsite hydrate formed in the hardening reaction of the calcium aluminate was found to be the exclusive crystalline phase material in direct contact with bone.

Place, publisher, year, edition, pages
2009. Vol. 91B, no 1, 122-127 p.
Keyword [en]
CoCr, calcium aluminate, free form fabrication, FIB, TEM, bone
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-148287DOI: 10.1002/jbm.b.31380ISI: 000269897100014PubMedID: 19402147OAI: oai:DiVA.org:uu-148287DiVA: diva2:401836
Available from: 2011-03-04 Created: 2011-03-04 Last updated: 2016-04-14Bibliographically approved

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Hermansson, LeifEngqvist, Håkan

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