Dental composite material and process

Details Dental composite material and process Dental composite material and process

1988-12-01

1990-08-28

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 66, 501 69, 106 35, 65 181, 65 184, 65 214, 65 22, C03C 1100

Patent

active

049525301

ABSTRACT:
A composite suitable for use as dental composite is provided by a glass material having a softening range of at least 10.degree. C. and having a particle size of less than 250 mesh to provide a precursor mix. The precursor mix is mixed with a fugitive pore forming material and a binder to form a pressable mix. The pressable mix is pressed at a pressure in excess of 5,000 pounds per square inch to form a sinterable mix. The sinterable mix is sintered for a period of time sufficient to remove said fugitive pore forming material and to form a sintered mass for crushing to form particles of less than 250 micrometers in size to be incorporated into a dental composite.

REFERENCES:
patent: 4381918 (1983-05-01), Ehrnford
patent: 4392828 (1983-07-01), Ehrnford
patent: 4503157 (1985-03-01), Hatahira
patent: 4527979 (1985-07-01), McLean et al.
patent: 4567030 (1986-01-01), Yuasa et al.
patent: 4744759 (1988-05-01), Bowen
Jones, "Composites Bite Into New Applications", Chemical Week (8/27/86), pp. 43-44.

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