ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Bioactive ceramics such as hydroxypatite (HA) promote and enhance biological fixation.There is still a discussion on the desired longevity of the coating. Stable coatings require anoptimum between resorption rate, flexural strength and adhesive strength of the coating.Ceramic coatings containing fluorapatite (FA, Ca5(PO4)3F) and calcium zirconium phosphate(CZP, CaZr4(PO4)6) promise lower resorption rates than conventional HA coatings in the biologicalmilieu. It is hoped that they can improve the long-term stability of implants by eliminating thedetrimental resorption of coating material. For the in vivo studies plasma sprayed coatings weregenerated. The materials were implanted into the distal femur epiphysis of rabbits and investigatedafter 2, 4, 6, 12, and 24 weeks postoperatively. Histological analysis was preformed on the areassurrounding the implant. The amount of osseointegration was determined by using theautomatically image analysis. The bonding strengths were compared with HA coating and uncoatedtitanium alloy. According to available data, there is inhibition of mineralization of bone at theinterface of calcium zirconium phosphate ceramics of the described composition
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.641.pdf
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