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)


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.


Corrosion Potential Open Circuit Potential Polarization Resistance Corrosion Current Artificial Saliva 
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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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