Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/10556

TitleBiotribocorrosion behavior of titanium in the presence of biofilms
Author(s)Souza, J. C. M.
Ariza, E.
Henriques, Mariana
Oliveira, Rosário
Teughels, W.
Rocha, L. A.
Celis, J. P.
KeywordsWear
Corrosion
Biofilm
Titanium
Issue date27-Mar-2009
CitationWORKSHOP ON BIOTRIBOLOGY-BRIDGING ENGINEERING AND MEDICINE, 2, Guimarães, Portugal, 2009 – “The 2nd Workshop on Biotribology - Bridging engineering and medicine : book of abstracts.” [S.l. : s.n, 2009].
Abstract(s)In the oral cavity, restorative surfaces such as of titanium-based implant systems are in contact with several acidic substances originated from dietary intake and microbial metabolism. During the mastication, a simultaneous corrosion-wear process known by Biotribocorrosion can take place on the surfaces which are in relative contact motion. The objective of this work is to investigate the in-vitro simultaneous corrosion-wear behavior of titanium in the presence of biofilms. Electrochemical tests of titanium surfaces covered or not by mixed oral biofilms (Streptococcus mutans and Candida albicans) were carried out in artificial saliva. After stabilization of open circuit potential of titanium in artificial saliva, reciprocating wear sliding tests were performed against an alumina ball at different loads using a tribometer equipped with a test viewer software. Moreover, electrochemical measurements were carried during the wear sliding tests. Worn and unworn surfaces were analyzed by different SEM techniques. Biofilms decreased significantly the friction of titanium surfaces. However, the presence of biofilms affected negatively the corrosion resistance of titanium probably due to acids release from the biofilms.
TypeAbstract
URIhttp://hdl.handle.net/1822/10556
AccessOpen access
Appears in Collections:CEB - Resumos em Livros de Atas / Abstracts in Proceedings
CIICS - Resumos em livros de actas / Abstracts in proceedings

Files in This Item:
File Description SizeFormat 
JSOUZA_Biotribology2010.pdfJSOUZA_Biotribology200921,43 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID