Gold-palladium alloys for dental materials

Details Gold-palladium alloys for dental materials Gold-palladium alloys for dental materials

1994-07-20

1997-12-09

Simmons, David A.

Alloys or metallic compositions

Gold base

Palladium containing

420508, 4332001, 433207, C22C 502

Patent

active

056957149

ABSTRACT:
Gold-palladium alloys with a high gold content for dental applications should, for reasons of biocompatibility, not contain any toxically dubious components. For particularly corrosion-resistant and biocompatible Type 4 alloys, tin is needed as the only base-metal component in amounts between 0.7 and 5.8 wt % if one remains within defined limits in a palladium-tin diagram of FIG. 1, for Pt values less than 2%. Such alloys contain, in addition to gold and tin, 6 to 25 wt % palladium, 0 to 12 wt % platinum and 0 to 2 wt % of at least one of iridium, rhodium and/or ruthenium.

REFERENCES:
patent: 2050040 (1936-08-01), Coleman et al.
patent: 2980998 (1961-04-01), Coleman et al.
patent: 3666540 (1972-05-01), Burnett
patent: 3716356 (1973-02-01), Burnett
patent: 4008080 (1977-02-01), Wagner
patent: 4062676 (1977-12-01), Knosp
patent: 4205982 (1980-06-01), German
patent: 4218244 (1980-08-01), Knosp
patent: 5240172 (1993-08-01), Steinke et al.

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