Powder of dental metal, a process for the preparation thereof, a

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Post sintering operation

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Details

419 35, 419 47, 433207, 433208, B22F 500, B22F 700, A61C 1308

Patent

active

053624386

ABSTRACT:
This invention relates to a powder substantially of dental metal, which powder is suitable for the manufacture of a dental restoration such as a crown or a bridge, comprising a substructure of dental metal and a fired on coating of a dental ceramic material. The powder comprises a core substantially of a dental metal, which core is coated with one or more layers substantially of metal which protect the dental metal of the core during sintering against oxidation and/or reduce the temperature at which the powder is sintered.
The invention also relates to a process for the manufacture of a dental restoration such as a crown or a bridge, comprising a substructure of a dental metal and a fired on coating of a dental ceramic material. This process comprises mixing a powder substantially of dental metal into a paste-like slurry, placing on a refractory model the resulting paste in the form of the restoration to be made, heating the composite thus obtained to a temperature sufficient to sinter the powder of dental metal to a massive metal mass, and firing on a coating of a dental ceramic material on the substructure thus obtained, optionally after finishing the surface. As powder of dental metal the powder according to the invention is used.

REFERENCES:
patent: 3502466 (1970-03-01), Vickery
patent: 4011077 (1977-03-01), Kaufman
patent: 4060414 (1977-11-01), Kaufman
patent: 4092223 (1978-05-01), Kaufman
patent: 4309457 (1982-01-01), Kawasumi et al.
patent: 4309458 (1982-01-01), Kawasumi et al.
patent: 4661071 (1987-04-01), Bell et al.
patent: 4742861 (1988-05-01), Shoher et al.
patent: 4814008 (1989-03-01), Shoher et al.
patent: 4855101 (1989-08-01), Mohs et al.
patent: 4970050 (1990-11-01), Groll et al.
patent: 4997373 (1991-03-01), Tanaka et al.
patent: 5106303 (1992-04-01), Oden et al.
patent: 5118296 (1992-06-01), Eldred

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