Analytical and electrochemical evaluation of the in vitro corrosion behavior of nickel-chrome and cobalt-chrome casting alloys for metal-ceramic restorations.
In this study we examined the hypothesis based on relevant literature survey that the in vitro corrosion behavior of a Cobalt-chrome dental casting alloy for metal-ceramic restorations is better than that of a Nickel-chrome dental casting alloy. The corrosion released metal ions were analysed by Inductively Coupled Plasma-Atomic Emission Spectroscopy. Moreover, the specimens were electrochemically tested by linear polarization. The statistical analysis of the results showed statistically significant differences in corrosion rates of Nickel-chrome alloy and Cobalt-chrome alloy calculated by analytical and electrochemical measurements. The hypothesis was confirmed and the results showed that the corrosion rates of the Cobalt-chrome alloy were lower than that of the Nickel-chrome alloy.
Yfantis
Constaninos
C
kyfantis@central.ntua.gr
Yfantis
Dimitrios
D
Anastassopoulou
Jane
J
Theophanides
Theophilos
T
D002858:Chromium Alloys / Q000737:chemistry*; D003343:Corrosion; D004563:Electrochemistry; D016876:Metal Ceramic Alloys / Q000737:chemistry*; D013499:Surface Properties
D002858:Chromium Alloys; D016876:Metal Ceramic Alloys