Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconia

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http://hdl.handle.net/10138/223851

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Perez-Tanoira , R , Horwat , D , Kinnari , T J , Perez-Jorge , C , Gomez-Barrena , E , Migot , S & Esteban , J 2016 , ' Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconia ' , Journal of Materials Science: Materials in Medicine , vol. 27 , no. 1 , 6 . https://doi.org/10.1007/s10856-015-5625-x

Title: Bacterial adhesion on biomedical surfaces covered by yttria stabilized zirconia
Author: Perez-Tanoira, Ramon; Horwat, David; Kinnari, Teemu J.; Perez-Jorge, Concepcion; Gomez-Barrena, Enrique; Migot, Sylvie; Esteban, Jaime
Contributor: University of Helsinki, Clinicum
University of Helsinki, Clinicum
Date: 2016-01
Language: eng
Number of pages: 9
Belongs to series: Journal of Materials Science: Materials in Medicine
ISSN: 0957-4530
URI: http://hdl.handle.net/10138/223851
Abstract: The aim of this study was to compare the bacterial adhesion of Staphylococcus spp. on Ti-6Al-4V with respect to Ti-6Al-V modified alloys with a set of Cubic yttria stabilized zirconia (YSZ) and Ag-YSZ nanocomposite films. Silver is well known to have a natural biocidal character and its presence in the surface predicted to enhance the antimicrobial properties of biomedical surfaces. Microbial adhesion tests were performed using collection strains and twelve clinical strains of Staphylococcus aureus and Staphylococcus epidermidis. The adherence study was performed using a previously published protocol by Kinnari et al. Both collection strains and clinical isolates have shown lower bacterial adhesion to materials modified with respect to the alloy Ti-6Al-4V and the modification with silver reduced the bacterial adhesion for most of all the strains studied. Moreover the percentage of dead bacteria have been evaluated, demonstrating increased proportion of dead bacteria for the modified surfaces. Nanocrystalline silver dissolves releasing both Ag+ and Ag-0 whereas other silver sources release only Ag+. We can conclude that YSZ with nanocrystalline silver coating may lead to diminished postoperative infections and to increased corrosion and scratch resistance of YSZ incorporating alloys Ti-6Al-4V.
Subject: STAPHYLOCOCCAL ADHESION
CERAMIC SURFACES
IN-VITRO
SILVER
INFECTION
ADHERENCE
TITANIUM
ALLOY
FILMS
VIVO
3125 Otorhinolaryngology, ophthalmology
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