Dental restorative compositions of improved X-ray opacity

Details Dental restorative compositions of improved X-ray opacity Dental restorative compositions of improved X-ray opacity

1979-01-03

1980-09-02

Derrington, James H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4229, 260 4237, 260 4252, 26099811, 433228, C08K 322, C08K 336, C08K 340

Patent

active

042205824

ABSTRACT:
Dental restorative compositions of improved X-ray opacity are described. These compositions comprise from 30% to 85% by weight of the composition of a finely divided inorganic filler and from 15% to 70% by weight of the composition of a liquid resin binder. The filler comprises at least 60% by weight of the filler of a ground barium glass that has a barium oxide (BaO) content greater than about 22.5% by weight of the glass. By appropriate selection of the binder, the composition may cure in a single stage of curing, or it may set in two stages, to provide a period of time during which it can be carved to a desired shape.

REFERENCES:
patent: 3751399 (1973-08-01), Lee et al.
patent: 3769336 (1973-10-01), Lee et al.
patent: 3808170 (1974-04-01), Rogers
patent: 3826778 (1974-07-01), Dietz
patent: 3959212 (1976-05-01), Rockett
patent: 4017454 (1977-04-01), Muller
patent: 4028325 (1977-06-01), King
patent: 4029632 (1977-06-01), Gross et al.
(I) Bowen, R. L., X-R-Opaque Reinforcing Fillers for Composite Materials, J. Dent. Res., 48, pp. 79-82 (1969). _
(II) Bowen, R. L., A New Series of X-Ray-Opaque Reinforcing Fillers forComposite Materials, J. Dent. Res., 51,177 (1972). _

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