Dental restorative adhesive having improved fracture toughness

Details Dental restorative adhesive having improved fracture toughness Dental restorative adhesive having improved fracture toughness

1992-07-17

1993-11-30

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524445, 524449, 524451, 524492, 524493, 524494, A61K 609, C08K 334

Patent

active

052666093

ABSTRACT:
The invention relates to an improved, castable, synthetic resin material, suitable for use in dental and medical restorations, as a replacement for dental enamel and hydroxyapatite bone material. This material is also useful for electrical insulation. More specifically, the invention provides a filled reinforced resin matrix comprising a castable resin; from 5 to 50% vol of fibers of 50 .mu.m or less diameter; from 10 to 35% vol of a first particulate filler having a particle size range of 0.1 to 50 .mu.m; and from 5 to 25% vol of a second particulate filler having an ultimate particle size range of 10 to 100 nm.

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patent: 4239113 (1980-12-01), Gross et al.
patent: 4297266 (1981-10-01), Ibsen et al.
patent: 4389497 (1983-06-01), Schmitt et al.
patent: 4407984 (1983-10-01), Ratcliffe et al.
patent: 4649165 (1987-03-01), Kuhlmann

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