Objective To compare the clinical effect of the Ni-Cr alloy,Gold-plating Ni-Cr alloy,Titanium alloy and Au-Pd alloy coping of the porcelain-fused-to-metal(PFM).

Study on smoothness of gold-paste layer fused to Ni-Cr alloy;

A study on the attrition resistance of the gold-paste layer fused to Ni-Cr alloy;

The Effect on Anti-acid Corrosion Resistance of Ni-Cr Alloy Coating Titanium;

The investigate about the best gilded technical parameter which answers to the clinical demand about nickel-chromium alloy.;

The coping of porcelain fused to metal crown is made usually from Nickel-chromium alloy, because of its excellent mechanical properties, good metal-ceramic bond strength and relatively low cost.

[Background] Because of favorable mechanical properties and low cost, Nickel-chromium alloys are widely used in crowns and bridges to replace compromised teeth .

Objective:The purpose of this study was to determine the electrochemical corrosion characteristics of Ni-Cr alloys,which was electroplated with non-cyanogen gold coating treatment in vitro.

Ni-Cr alloys are prepared by self-made multi-function and high gradient directional solidification and arc melting equipment.

Ni-Cr alloys, as the non-precious base-metal of porcelain-fused-to-metals, are and will be widely used in our country, especially in the inland, for their low cost.