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  • 2005-2009  (2)
  • 2006  (2)
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  • 2005-2009  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Comparison of Antibacterial Effect of Three Bioactive Glasses (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 309-311 (May 2006), p. 345-348 
    Details
    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: Antibacterial effects of three powdered bioactive glasses were compared by measuring the pH of the simulated body fluid in immediate contact with the glass powder particles and by cultivating four microorganisms in the powder-solution mixtures. After individual cultivation with the microorganisms the bioactive glasses showed ability to kill bacteria, but the effects were very dependent on glass composition and on the microorganism as well as on cultivation time. Theresults indicated that antimicrobial property of bioactive glasses correlates with their ability to change the pH of the body fluid in immediate contact with the glass. However, the increase in pH is not the only factor influencing the antimicrobial properties
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/50/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.309-311.345.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    In Vitro Reactivity of Bioactive Glass Fibers (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 49 (Oct. 2006), p. 246-251 
    Details
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: Implants with long lasting bioactivity and mechanical sustainability would be of interestin several novel clinical applications. By processing bioactive glass fibers and biodegradablepolymers into 3D structures, bone formation ability of glasses and flexibility of polymers can becombined. In order to achieve desired physiological response, reactivity of bioactive glass fibersmust be specified. Bundles of fibers within the range of bioactivity were soaked in the simulatedbody fluid at stationary conditions for several time intervals after which the cross-sectional surfacesof the fibers were studied with SEM-EDXA. The reaction layers and precipitations formed on thefiber surfaces suggest that the fibers react according to three mechanisms depending on the glasscomposition. Fibers with a high in vitro bioactivity showed the formation of distinct and thick silica–rich and calcium phosphate –rich layers already at one day’s immersion. Fibers of mediumbioactivity did not show any clear silica –rich layer but a formation of calcium phosphateprecipitations or layers at one day’s immersion. Slow glasses showed sporadic calcium phosphateprecipitation only after the longest immersion times. The results indicate that the medium and slowglasses are interesting alternatives for applications where a long term mechanical durabilitysuggested by their slow reactivity in combination with their osteoconductive tendency is desired
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.49.246.pdf
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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