Compositions: coating or plastic – Coating or plastic compositions – Dental
Patent
1979-01-09
1980-02-19
McCarthy, Helen M.
Compositions: coating or plastic
Coating or plastic compositions
Dental
65 33, 433203, 106 397, 106 52, C03C 304, C03C 322, C09K 300
Patent
active
041893255
ABSTRACT:
A glass-ceramic containing Li.sub.2 O, CaO, Al.sub.2 O.sub.3, SiO.sub.2, platinum and Nb.sub.2 O.sub.5 is disclosed. It is highly suitable for use in dental restorations because of its combination of castability, chemical durability and mechanical strength. The aesthetic qualities of natural teeth may be reproduced by proper control of processing parameters, e.g. addition of coloring additives and devitrification heat treatment schedule. Dental restorations may be made by casting a melt in a conventional dental laboratory investment mold, followed by devitrification. Fracture of cast margins is avoided because of the mechanical strength and toughness of the glass-ceramic. Partial restorations can be bonded with dental cement directly to the tooth of a recipient without the need for building the restoration upon an undercoat of metal alloy.
REFERENCES:
patent: 2920971 (1960-01-01), Stookey
patent: 2998675 (1961-09-01), Olcott et al.
patent: 3006775 (1961-10-01), Chen
patent: 3013362 (1961-12-01), Calkins et al.
patent: 3157522 (1964-11-01), Stookey
patent: 3170780 (1965-02-01), Takehara
patent: 3170805 (1965-02-01), McMillan et al.
patent: 3238085 (1966-03-01), Hayami et al.
patent: 3282711 (1966-11-01), Lin
patent: 3537868 (1970-11-01), Kosaka
patent: 3573939 (1971-04-01), Beall
patent: 3625718 (1971-12-01), Petticrew
patent: 3804608 (1974-04-01), Gaskell et al.
patent: 3816704 (1974-06-01), Borom et al.
patent: 3867166 (1975-02-01), Sullivan
patent: 3885182 (1975-05-01), Chu
patent: 3940255 (1976-02-01), Harrington et al.
patent: 3951670 (1976-04-01), Bush
patent: 3973972 (1976-08-01), Muller
patent: 4017454 (1977-04-01), Muller
patent: 4055435 (1977-10-01), Sagara
MacCulloch, W. T., "Advances in Dental Ceramics", Brit. Dental J., 124, (1968), pp. 361-365.
Chu, G. P. K., "Dental Porcelain: The State of the Art", U. of So. Cal. Dental School; Yamada, H. N., ed. (1977), pp. 35-40.
Kasloff, Z., "Dental Porcelain: The State of the Art", U. of So. Cal. Dental School; Yamada, N. N., ed. (1977), pp. 241-244.
Hench, L. W. et al., "Glass-Ceramic Dental Restorations", presented at meeting of Int'l. Ass'n. of Dental Research, Chicago, Ill., Mar. 19, 1971, `APALS` Citations.
Rindone, G. E., "Influence of Platinum Nucleation on Crystallization of a Lithium Silicate Glass", J. Am. Cer. Soc. 41 (Jan. 1958), pp. 41-42.
Rindone, G. E., "Further Studies of the Crystallization of a Lithium Silicate Glass", J. Am. Cer. Soc. 45 (Jan. 1962), pp. 7-12.
Barrett Joy M.
Clark David E.
Hench Larry L.
Clarke Dennis P.
McCarthy Helen M.
The Board of Regents, State of Florida, University of Florida
LandOfFree
Glass-ceramic dental restorations does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Glass-ceramic dental restorations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glass-ceramic dental restorations will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-652000