Provisional crown-and-bridge resin

Details Provisional crown-and-bridge resin Provisional crown-and-bridge resin

C - Chemistry, Metallurgy

08

L

31/162, 400/5105

C08L 33/10 (2006.01) A61K 6/08 (2006.01) A61K 6/083 (2006.01) C08F 265/06 (2006.01)

Patent

CA 1134532

ABSTRACT OF THE DISCLOSURE A provisional crown-and-bridge resin comprising a liquid resin component and a powder component. The liquid resin component contains tetrahydrofurfuryl methacrylate as a major ingredient and is free from methyl methacrylate. It also contains an anti-oxidant and an accelerator. The pow- der component contains poly (ethyl methacrylate) as a major ingredient and a curing agent for the resin component. The powder is mixed with the resin shortly before application at a ratio of about two to about five parts of powder to one part of liquid resin by weight, to give a suitably flowing mixture. The resin component may also contain ethyl metha- crylate as a major ingredient and may contain ethoxylated bisphenol A dimethacrylate as a major ingredient. The pow- der may include a substantial proportion of amorphous silica and preferably incorporates a substantial amount of X-ray opaque barium glass.

368370

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