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Calcium aluminate coated and uncoated free form fabricated CoCr implants: A comparative study in rabbit
Author(s) -
Palmquist A.,
Jarmar T.,
Hermansson L.,
Emanuelsson L.,
Taylor A.,
Taylor M.,
Engqvist H.,
Thomsen P.
Publication year - 2009
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.31380
Subject(s) - rabbit (cipher) , calcium , aluminate , materials science , biomedical engineering , chemical engineering , chemistry , composite material , metallurgy , medicine , computer science , cement , engineering , computer security
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. © 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2009