ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Hydroxyapatite (HAp) is a major inorganic component of human hard tissues, such asbones and teeth, and its content determines their microstructures and physical properties. ArtificialHAp shows strong biocompatibility and bioactivity and thus it has found broad applications intissue engineering for replacing damaged hard tissues. The artificial HAp, however, suffers from itsintrinsic low mechanical properties, so to meet mechanical requirements, HAp can be incorporatedwith stiff mineral phases (mullite, zirconia, alumina). The performance and long-term survival ofthese biomedical devices are also dependent on the presence of bacteria surrounding the implants. Inorder to reduce the incidence of implant-associated infections, several treatments have beenproposed, e.g. introduction of silver or fluoride in the HAp. The objective of this research is thesintering of composites based on calcium phosphate, mainly HAp supported on zirconia, for bonereplacement with better microstructural features. In fact the use of zirconia can enhance themechanical properties of bioceramics. Moreover the introduction of small amounts of silver, whichshould improve the antibacterial properties, will be taken into consideration since it is expected alsoto further toughen the whole structure
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.57.31.pdf
Permalink