The Corrosion of Dental Ni - Cr Alloys

An in Vitro Evaluation
  • Jean-Marc Meyer
Part of the NATO ASI Series book series (NSSA, volume 171)

Abstract

Dental casting alloys based on the mickel-chromium system have been developped firstly as an economical alternative to gold alloys. They include a wide range of compositions, with nickel being between 69 and 81 weight percent, and chromium between 12 and 26%. They may contain up to 12% of cobalt, and/or up to 12% of molybdenum. Minor alloying elements like Fe, Al, Mn, Ti, Ta, Ga, Nb, Si, B, Be, P and Sn may be added. It becomes therefore evident that the nickel-based dental casting alloys do not form a homogeneous group of alloys, and that the mechanical properties and the electrochemical behavior of a single alloy can not be representative of the whole family of Ni-Cr alloys. Furthermore, the variations in the oral environment (e.g. pH value) will not have the same effects on different alloys.

Keywords

Titanium Nickel Sulfide Mercury Urea 

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References

  1. Fusayama, K., Katayori, T., Nomoto, S., 1963, Corrosion of Gold and Amalgam Placed in Contact with Each Other, J. Dent. Res., 42: 1183.CrossRefGoogle Scholar
  2. Lee, J., Lucas, L., O’Neal, J., Lacefield, W., and Lemons, J., 1985, In Vitro Corrosion Analyses of Ni-base Alloys, 63rd Gen. Sess. IADR, Las Vegas, J. Dent. Res., 64: 317, Abstract 1285.Google Scholar
  3. Mansfeld, F., 1973, Tafel Slopes and Corrosion Rates from Polarization Resistance Measurements, Corrosion, 29: 397.CrossRefGoogle Scholar
  4. Mazille, H.M.J., Brugirard, J., 1981, Problèmes de corrosion de quelques métaux et alliages dentaires: comparaison de cas cliniques et d’essais de laboratoire, in: «Métallurgie Dentaire», P. Guiraldenq and J. Blanc-Benon, eds., Pyc Edition, Paris.Google Scholar
  5. Meyer, J.M., 1977, Corrosion Resistance of Nickel-Chromium Dental Casting Alloys, Corrosion Science, 17: 971.CrossRefGoogle Scholar
  6. Meyer, J.M., 1985, Corrosion of Dental Root Posts, in: »Corrosion et Dégradation des Biomatériaux et leurs Incidences Cliniques (Premier Colloque Européen), Strasbourg, Mars 1984,» Conseil de 1’Europe, Strasbourg.Google Scholar
  7. Meyer, J.M., Nally, J.N., 1974, Influence of Artificial Salivas on the Corrosion of Dental Alloys, 11th Annual Meeting, IADR, Continental European Division, Brussels.Google Scholar
  8. Meyer, J.M., Niney, C., 1985, Unpublished results.Google Scholar
  9. Meyer, J.M., Wirthner, J.M., Barraud, R., Susz, C.P., and Nally, J.N., 1979, Corrosion Studies on Nickel-Based Casting Alloys, in: “Corrosion and Degradation of Implant Materials, ASTM STP 684,” B.C. Syrett and A. Acharya, Eds., American Society for Testing and Materials, Philadelphia.Google Scholar
  10. Phillips, R.W., 1973, Tarnish and Corrosion, in: “Science of Dental Materials”, W.B. Saunders Company, Philadelphia.Google Scholar
  11. Stern, M., Geary, A.L., 1957, A Theoretical Analysis of the Shape of Polarization Curves, J. Electrochem. Soc. 104: 56.CrossRefGoogle Scholar
  12. Wirz, J., Johner, M., Pohler, O., 1980, Korrosionsverhalten verschiedener Schrauben und Stifte in Wurzelkanal, Schweiz. Mschr. Zahnheilk., 90: 217.Google Scholar
  13. Wiskott, A., 1980, Une approche de l’analyse des courbes de polarisation selon Mansfeld, Thèse No. 358, University of Geneva.Google Scholar
  14. Zidan, O., 1985, Etched Base-Metal Alloys: Comparison of Relief Patterns, Bond Strengths and Fracture Modes, Dental Materials, 1: 209.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • Jean-Marc Meyer
    • 1
  1. 1.School of DentistryUniversity of GenevaGeneva 4Switzerland

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