Dental porcelain compositions

Details Dental porcelain compositions Dental porcelain compositions

1998-07-17

2000-02-08

Koslow, C. Melissa

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

106 35, 4332021, 433206, 4332121, 427 229, 427 226, 427 227, 501 16, 501 17, 501 21, 501 24, 501 25, 501 26, 501 59, 501 57, 501 63, 501 64, 501 66, 501 67, 501 68, 501 69, 501 70, 501 72, C03C 816

Patent

active

060228199

ABSTRACT:
Porcelain compositions of the present invention comprise one or more glass or glass-ceramic powder components. Additionally, one or more opacifying agents, pigments, fluorescing agents and the like may be included in the composition. Based on volume percent, 10% of the particulate in the porcelain has a particle size of less than between about 1.1 microns and about 1.5 microns, 50% of the particulate in the porcelain has a particle size of less than between about 3 and about 6 microns, 90% of the particulate in the porcelain has a particle size of less than between about 8 and about 13.5 microns, and the maximum particle size of the particulate is greater than about 20 microns and less than about 60 microns. The mean particle size is preferably in the range of about 3.0 microns to about 6.5 microns.

REFERENCES:
patent: 4557691 (1985-12-01), Martin et al.
patent: 4806383 (1989-02-01), Poltz
patent: 5679144 (1997-10-01), Thiel et al.

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