Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1990-03-21
1991-11-12
Ryan, Patrick J.
Stock material or miscellaneous articles
Composite
Of inorganic material
106 113, 106 114, 106 126, 420585, 433206, 433207, 433209, 4332121, 4332281, 428457, 428469, 428472, 428701, 428688, 428702, 428704, B32B 1500
Patent
active
050647318
ABSTRACT:
A dental prosthesis comprises an inner layer portion and an outer layer portion. The outer layer portion is a dental porcelain material, while the inner layer portion is a sintered product which, after sintering, is composed of:
(i) 40 to 95% by weight of one or (two or) more electric conductive ceramic materials selected from the group consisting of nitride ceramics, boride ceramics and carbide ceramics, all having a specific electric resistance of 10.sup.-1 .OMEGA..multidot.cm or below, and
(ii) 5 to 60% by weight of the following (A) and/or (B):
REFERENCES:
patent: 4321042 (1982-03-01), Scheicher
patent: 4327014 (1982-04-01), Kawahara et al.
patent: 4451236 (1984-05-01), Tarasov et al.
patent: 4468251 (1984-08-01), Hausselt et al.
patent: 4556389 (1985-12-01), Ueno et al.
Hayashi Shohei
Inamochi Takashi
Kitamura Masaaki
Miyazaki Takashi
G-C Dental Industrial Corp.
Ryan Patrick J.
Turner Archene
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