Corrosion behaviour of titanium after short-term exposure to an acidic environment containing fluoride ions.

Journal of Materials Science. Materials in Medicine
Ludek Joska, Jaroslav Fojt

Abstract

The negative effect of fluoride ions on titanium has been known in dentistry for a long time. The presented work was aimed at the interaction between titanium and model saliva following a short-term exposure of a specimen to a model medical preparation rich in fluoride ions. The experimental work was carried out using titanium grade 2 in a physiological solution (pH non-adjusted, 5.8, 4.2; 5000 ppm F-) and in model saliva. Electrochemical measurement techniques were supplemented with XPS analysis. The presence of fluoride ions resulted in partial degradation of the passive layer even in a slightly acidic environment. The decrease of pH to the value of 4.2 and the presence of 5000 ppm F- caused titanium activation followed by a slow repassivation in model saliva. Formation of low soluble compound rich in fluorine explains experimental data. Short medical treatment can result in relatively long period of increased titanium corrosion.

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Citations

Oct 18, 2012·Journal of Materials Science. Materials in Medicine·E MatykinaE Rivero
Oct 29, 2013·The Journal of Prosthetic Dentistry·Valentim Adelino Ricardo BarãoCortino Sukotjo
Mar 10, 2012·Journal of the Mechanical Behavior of Biomedical Materials·Mathew T MathewMarkus A Wimmer
Jun 5, 2015·Journal of the Mechanical Behavior of Biomedical Materials·I GolvanoA Aginagalde
Aug 8, 2015·Materials Science & Engineering. C, Materials for Biological Applications·Jaroslav FojtVaclav Sefl
Feb 22, 2011·Journal of Dental Research·V A BarãoC Sukotjo
Sep 9, 2018·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Ashwaq A Al-HashediFaleh Tamimi
Sep 30, 2010·Biomedical Materials·Ludek JoskaLadislav Cvrcek
May 6, 2019·Journal of Molecular Medicine : Official Organ of the Gesellschaft Deutscher Naturforscher Und Ärzte·Wen-Qing ZhuJing Qiu

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