Metal ceramic alloy description

By Dr. Vishaal Bhat on Thursday 3 July 2008 with 0 comments



Noble:

  • gold-platinum-palladium
  • gold-platinum-silver
  • gold-palladium
  • palladium-silver
  • high palladium

Base:

  • nickel-chrome
  • nickel-chromium-beryllium
  • cobalt-chromium

Characteristics of noble metals: corrosion resistant and oxidation resistant

Characteristics of base metals: low cost, high sag resistance, hard, etchable

Which is best?

Base metals have increased hardness and strength---they are good for long span

FPDs, but bad for finishing a polishing. They have an excellent bond to

porcelain. High nobles are costly with poor sag resistance and less hard.

Category: Dental Materials Notes , Prosthodontics Notes

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