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Corrosion of Ferromagnetic Alloys used for Magnetic Retention of Overdentures

Biomaterials, University of Nijmegen Dental School, Philips van Leydenlaan 25, 6500 HB Nijmegen, The Netherlands

P.R. Mezger

Biomaterials, University of Nijmegen Dental School, Philips van Leydenlaan 25, 6500 HB Nijmegen, The Netherlands

J.M. Van der Zel

Elephant Edelmetaal, Atoomweg 12, 1627 LE Hoorn, The Netherlands

E.H. Greener

Biological Materials, Northwestern University Dental School, 311 E. Chicago Ave., Chicago, Illinois 60611

Three ferromagnetic casting alloys intendedfor use with magnetically retained overdentures (compositions in wt%: #1, Pd 50, Co 47, Ga 2, Pt 1 ; #2, Pd 60, Co 37, Ga 2, Pt 2; #3, Pd 49, Co 46, Ga 2, Pt 2) were investigated. A 0.9% saline solution and an artificial saliva (Meyer) were used for evaluation of the electrochemical corrosion behavior of these alloys, utilizing standard potentiodynamic techniques.

All alloys investigated possessed a good corrosion resistance in the potential range of the oral environment (from - -100 to 300 mV versus SCE). In addition, alloys #1 and 3 appeared to be susceptible to pitting above +300 mV (SCE), while #2 was resistant to pitting and was found to passivate in 0.9% saline solution.

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Journal of Dental Research, Vol. 66, No. 9, 1456-1459 (1987)
DOI: 10.1177/00220345870660090901


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Vrijhoef, M.M.A. Articles by Greener, E.H. Search for Related Content PubMed PubMed Citation Articles by Vrijhoef, M.M.A. Articles by Greener, E.H. Social Bookmarking                         What's this?