Effect of Ion Release on Antibacterial Activity of Melt-Derived and Sol-Gel-Derived Reactive Ceramics

Minna Vaahtio; Eveliina Munukka; Outi Leppäranta; Di Zhang; Erkki Eerola; Heimo O. Ylänen; Timo Peltola

doi:10.4028/www.scientific.net/KEM.309-311.349

Paper Titles

Effect of Electrical Polarization on the Behavior of Bioactive Glass Containing MgO and B₂O₃ in SBF
p.333

Electrovector Effect of Polarized and Chemically Treated Na₂O-CaO-P₂O₅-SiO₂-Al₂O₃ Bioglasses
p.337

Apatite-Forming Ability of Glass-Ceramics Containing Whitlockite and Diopside in a Simulated Body Fluid
p.341

Comparison of Antibacterial Effect of Three Bioactive Glasses
p.345

Effect of Ion Release on Antibacterial Activity of Melt-Derived and Sol-Gel-Derived Reactive Ceramics
p.349

Sintering Effects on Mechanical Properties of Hydroxyapatite-Titanium Dioxide (HA-TiO₂) Composites
p.355

Sintering Effect on Mechanical Properties of Composites of Bovine Derived Hydroxyapatite (BHA) with Titanium
p.359

An Inverted Observation Technique for Interactions Between Titanium Oxide and Cells on Commercially Pure Titanium
p.363

Titanium Oxide (TiO₂) Coatings Produced on Titanium by Oxygen-Plasma Immersion and Cell Behaviour on TiO₂
p.367

HomeKey Engineering MaterialsKey Engineering Materials Vols. 309-311Effect of Ion Release on Antibacterial Activity of...

Effect of Ion Release on Antibacterial Activity of Melt-Derived and Sol-Gel-Derived Reactive Ceramics

Abstract:

Four different bioreactive ceramics were prepared using a sol-gel method and a standard melting process. The aim was to study antibacterial effect of these materials on the growth of Staphylococcus epidermidis. The dissolution (Si and Ca ions) of fine (≤ 45 !m) ceramic powders in a tryptone soya broth (TSB) was investigated. Also the pH changes in TSB solution were measured. In addition the adherence of Enterococcus faecalis (Ef) to materials was investigated. The bacterial adhesion was studied using scanning electron microscopy (SEM). In the bacterial and the adhesion test, CaPSiO2 and S53P4 had the strongest antimicrobial effect against studied bacteria. It was shown that bioreactive sol-gel derived ceramic with sufficient high Ca ion release (> 270 ppm) can reach strong antibacterial effect also at lower pH values (< 9.6).