Title: Do oral biofilms influence the wear and corrosion behavior of titanium?
Authors: Souza, J.C.M. ×
Henriques, M.C.
Oliveira, R.
Teughels, Wim
Celis, Jean-Pierre
Rocha, L.A. #
Issue Date: May-2010
Publisher: Harwood Academic Publishers
Series Title: Biofouling vol:26 issue:4 pages:471-478
Abstract: The main aim of this work was to study the simultaneous wear-corrosion of titanium (Ti) in the presence of biofilms composed of Streptococcus mutans and Candida albicans. Both organisms were separately grown in specific growth media, and then mixed in a medium supplemented with a high sucrose concentration. Corrosion and tribocorrosion tests were performed after 48 h and 216 h of biofilm growth. Electrochemical corrosion tests indicated a decrease in the corrosion resistance of Ti in the presence of the biofilms although the TiO(2) film presented the characteristics of a compact oxide film. While the open circuit potential of Ti indicated a tendency to corrosion in the presence of the biofilms, tribocorrosion tests revealed a low friction on biofilm covered Ti. The properties of the biofilms were similar to those of the lubricant agents used to decrease the wear rate of materials. However, the pH-lowering promoted by microbial species, can lead to corrosion of Ti-based oral rehabilitation systems.
ISSN: 0892-7014
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Periodontology
Chemical and Extractive Metallurgy Section (-)
× corresponding author
# (joint) last author

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