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Comparison of Corrosion Behaviour in Presence of Oral Bacteria by Flore Laurent; Brigitte Grosgogeat; Lucien Reclaru; Francis Dalard; Michele Lissac is a Engineering article available to read on EtoBox.

What is Comparison of Corrosion Behaviour in Presence of Oral Bacteria about?

The aim of this study was to compare the resistance of the corrosion of dental alloys in a solution containing oral bacteria named Actinomyces viscosus (ATCC19246). In this paper, we explain the choice of this precise species of bacteria, then specify its culture in arti"cial saliva and the experimental precautions needed to avoid the pollution by other bacteria. The electrochemical behaviour of two dental alloys (Ni}Cr alloy and gold-based alloy) was investigated by electrochemical means in sterile Fusayama arti"cial saliva (AS), AS enriched with sterile yeast extract (YE) and YE modi"ed by introducing bacteria (AV). Open-circuit potentials, potentiodynamic curves, polarization resistance and impedance spectroscopy are the electrochemical procedures selected for this work. It has thus been shown that the open-circuit potential of the non-precious alloy is always lower than that of the gold precious alloy, and the colonization of metal surface by bacteria caused a drop in open circuit potential. The electrochemical impedance spectroscopy results have shown that the electrolyte resistance decreased between the AS, YE and AV milieu, in the presence of bacteria a slight decrease in po

Who reads Comparison of Corrosion Behaviour in Presence of Oral Bacteria?

Author

Flore Laurent; Brigitte Grosgogeat; Lucien Reclaru; Francis Dalard; Michele Lissac

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0142-9612)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)