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Biocorrosion of 316LV steel used in oral cavity due to D esulfotomaculum nigrificans bacteria.

Authors :
Mystkowska, Joanna
Ferreira, Jose A.
Leszczyńska, Katarzyna
Chmielewska, Sylwia
Dąbrowski, Jan Ryszard
Wieciński, Piotr
Kurzydłowski, Krzysztof Jan
Source :
Journal of Biomedical Materials Research, Part B: Applied Biomaterials; Jan2017, Vol. 105 Issue 1, p222-229, 8p
Publication Year :
2017

Abstract

Corrosion processes of metallic biomaterials in the oral cavity pose a significant limitation to the life and reliable functioning of dental materials. In this article, the influence of environment bacteria Desulfotomaculum nigrificans sulfate reducing bacteria on the corrosion processes of 316LV steel was assessed. After 14 and 28 days of contact of the material with the bacterial environment, the surfaces of the tested biomaterial were observed by means of confocal scanning laser microscopy, and their chemical composition was studied using X-Ray Photoelectron Spectrometry and a scanning transmission electron microscopy. Corrosive changes, the presence of sulfur (with atomic concentration of 0.5%) on the surface of the biomaterial and the presence of a thin oxide layer (thickness of ∼20 nm) under the surface of the steel were observed. This corrosion layer with significant size reduction of grains was characterized by an increased amount of oxygen (18% mas., p < 0.001) in comparison to untreated 316LV steel (where oxygen concentration − 10% mas.). Image analysis conducted using APHELION software indicated that corrosion pits took up ∼2.8% of the total tested surface. The greatest number of corrosion pits had a surface area within the range of 100-200 μm<superscript>2</superscript>. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 222-229, 2017. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15524973
Volume :
105
Issue :
1
Database :
Complementary Index
Journal :
Journal of Biomedical Materials Research, Part B: Applied Biomaterials
Publication Type :
Academic Journal
Accession number :
120385356
Full Text :
https://doi.org/10.1002/jbm.b.33518