ISSN:
1013-9826
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
Apatite formation on the surface of materials in body environment is an essential conditionto show osteoconduction after implantation in bony defects. This study reports the novel technique forproviding the apatite-forming ability to titanium metals by only controlling the spatial gap andthermal oxidation. Two pieces of titanium thermally oxidized at 400 °C were set together like V-letterwith varied mouth opening. They showed the formation of apatite on both facing surface afterexposure to a simulated body fluid (SBF) proposed by Kokubo and his colleagues, when the gap wasless than approximately 600 μm. Moreover, specimens with micro-grooves of 500 μm in depth and200-1000 μm in width was able to form apatite in SBF with in 7 days, after they were thermallyoxidized at 400 oC. These results indicated that the titanium metals were provided withapatite-forming ability, i.e. osteoconduction, due to controlled gap with thermally oxidized surface.Hence, we conclude that bioactive titanium substrate showing osteoconduction can be produced bydesigned machining followed by thermal oxidation at an appropriate temperature
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.361-363.621.pdf
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