title: Biocorrosion of 316LV steel used in oral cavity due to Desulfotomaculum nigrificans bacteria.
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 μm2. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 222-229, 2017.
authors.affiliation: Department of Materials Science and Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Bialystok, 15-351, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Mystkowska
authors.affiliation: School of Medicine, Stanford University, Stanford, California.|Division of Infectious Diseases, California Institute for Medical Research, San Jose, California.
authors.forename: Jose A
authors.initials: JA
authors.lastname: Ferreira
authors.affiliation: Department of Microbiology, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Bialystok, 15-222, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Leszczyńska
authors.affiliation: Department of Microbiology, Faculty of Medicine with the Division of Dentistry and Division of Medical Education in English, Medical University of Bialystok, Bialystok, 15-222, Poland.
authors.forename: Sylwia
authors.initials: S
authors.lastname: Chmielewska
authors.affiliation: Department of Materials Science and Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, Bialystok, 15-351, Poland.
authors.forename: Jan Ryszard
authors.initials: JR
authors.lastname: Dąbrowski
authors.affiliation: Division of Materials Design, Faculty of Materials Engineering, Warsaw University of Technology, 02-507, Warsaw, Poland.
authors.forename: Piotr
authors.initials: P
authors.lastname: Wieciński
authors.affiliation: Division of Materials Design, Faculty of Materials Engineering, Warsaw University of Technology, 02-507, Warsaw, Poland.
authors.forename: Krzysztof Jan
authors.initials: KJ
authors.lastname: Kurzydłowski
mesh_terms: D018441:Biofilms / Q000254:growth & development*; D003343:Corrosion; D045859:Desulfotomaculum / Q000502:physiology*; D006801:Humans; D009055:Mouth / Q000382:microbiology*; D013232:Steel / Q000737:chemistry*
chemical_list: D013232:Steel
keywords: Desulfotomaculum nigrificans; FIB-SEM; aphelion; biocorrosion; sulfate-reducing bacteria