Factors controlling antibacterial properties of bioactive glasses

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Zhang D, Munukka E, Hupa L, Ylanen H, Viljanen MK, Hupa M
Förläggare: Trans Tech Publications Ltd.
Publiceringsår: 2007
Tidskrift: Key Engineering Materials
Tidskriftsakronym: KEY ENG MAT
Volym: 330-332
Nummer: 1, Bioceramics
Artikelns första sida, sidnummer: 173
Artikelns sista sida, sidnummer: 176
Antal sidor: 4
ISSN: 1013-9826


Abstrakt

Factors controlling the antibacterial ability of three bioactive glasses were studied by comparing the changes in the SBF during immersion of the glasses with their response to four microorganisms. After immersion of 100 mg/ml fine powder (< 45 mu m) of the glasses in the SBF for 1, 2, 4, 8, 16, 27 and 48 hours, the immersion solutions were filtered and the pH in the bulk solution was measured. Ionic concentrations of Na, K, Ca, Mg, P and Si ions in the immersion solutions were determined by ICP-OES. The antibacterial activity of the glasses showed good correlation with the changes of the pH values in the SBF solutions. No correlation was found between the ionic concentration and the antibacterial ability of the three glasses against the four tested microorganisms. The results suggest that, the antimicrobial effect of the glass powder against the microorganisms tested is mostly dependent on the increase of the pH in the solution to values detrimental for the bacteria growth.


Nyckelord

antibacterial property, in-vitro, ionic concentration, pH, SBF

Senast uppdaterad 2019-09-12 vid 03:32