[Investigations of chemical corrosion of Ni/Cr-alloys]

Dental final and auxiliary materials have to be biocompatible. Before using sumptuous biological testing methods corrosions studies allow to check up this property. Our investigations have been carried out by anodic polarization measurements. We tested traditional and further developed Ni/Cr-based alloys in independence to pH-value and composition of the electrolyte. The result is that the new with the help of an extensive experimental program developed Ni/Cr-based alloy Gisadent NCS 1 (Institute of Non-Precious Metals, Freiberg, GDR) shows a good corrosion resistance in comparison with other commercial products.