Corrosion and tarnishing characteristics of low gold content dental casting alloys

Corrosion resistance evaluation of Pd-free Ag-Au-Pt-Cu dental alloys

“…Potential I, shown as a peak potential in forward scan, corresponds to the corrosion potential (Ecorr) 1) . Corrosion potential is the potential at which the sample current changes from cathodic to anodic 5) . Potential II, referred to as the breakdown potential (Ebd) 2,4,5) , corresponds to a potential at which a rapid increase in current density and active corrosion initiate 2) .…”

“…Corrosion potential is the potential at which the sample current changes from cathodic to anodic 5) . Potential II, referred to as the breakdown potential (Ebd) 2,4,5) , corresponds to a potential at which a rapid increase in current density and active corrosion initiate 2) . Potential III, shown as a peak potential in reverse scan, corresponds to the zero current potential (Ezc) 1) .…”

“…The summation of current densities gives a measure of the average corrosion rate of an alloy in the range of voltages anticipated 5) .…”

“…The summation of current densities gives a measure of the average corrosion rate of an alloy in the range of voltages anticipated 5) . In previous studies, Corso Jr et al 4) and Fioravanti et al 5) integrated the current densities from −0.3 to +0.3 V and anticipated the corrosion rates of the dental alloys.…”

“…For this reason, the corrosion resistance of dental alloys in the mouth has been evaluated by diverse means and methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] . The corrosion of dental alloys is an electrochemical phenomenon, generally understood as a multiple electrode reaction which comprises the occurrence of both anodic oxidation and cathodic reduction reactions.…”