Dentistry – Prosthodontics – Tooth construction
Patent
1982-05-24
1984-11-13
Dean, R.
Dentistry
Prosthodontics
Tooth construction
A61C 1308
Patent
active
044823231
ABSTRACT:
A dental restoration includes a casting of a palladium/silver alloy which comprises 45-60 percent palladium, 25-45 percent silver, 3-15 percent tin and/or indium, 0.3-9.0 percent zinc, 0.1-1.0 percent silicon, up to 0.25 percent rhenium and/or iridium, and up to 5 percent in total of one or more of copper, magnesium, gallium and ruthenium. The dental restorations obtained by firing porcelain against castings of this alloy exhibit freedom from discoloration, and excellent bond strength is are obtained between the porcelain coating and the underlying alloy casting.
REFERENCES:
patent: 3929474 (1975-12-01), Ingersoll
patent: 3929475 (1975-12-01), Ingersoll
Dean R.
The J. M. Ney Company
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