Richard A Pollak

US Patent:

44499388, May 22, 1984

Filed:

Feb 19, 1982

Appl. No.:

6/350404

Inventors:

Richard B. Pollak - Los Angeles CA

Assignee:

Lee Pharmaceuticals, Inc. - So. El Monte CA

International Classification:

A61K 608

US Classification:

523116

Abstract:

A biologically compatible non-toxic composition which when mixed, is useful as an in situ curing endodonic filling material. The composition has two separately packaged components. One component is a paste which contains a low viscosity hydroxy terminated polydialkylsiloxane and a non-reactive silicone oil diluent having a viscosity of from about 20 to 20,000 centistrokes at 25. degree. C. and comprising a polydialkylsiloxane. The other component is a liquid which includes (i) the reaction product resulting from the refluxing at ambient pressure and a temperature of about 150. degree. to about 175. degree. C. under a nitrogen blanket in the absence of air and moisture a dialkyltindicarboxylate in which the alkyl groups have from 1 to about 8 carbon atoms and the carboxylate groups contain from about 10 to about 18 carbon atoms and a tetraalkyl orthosilicate, in the molar ratio of 1 to 3; (ii) uncombined alkyl orthosilicate and (iii) a non-reactive silicone oil diluent having a viscosity of from 20 to 120,000 centistrokes at 25. degree. C. and comprising a polydialkylsiloxane. The method of treating a root canal in need of endodontic filling which comprises the steps of forming a mixture by thoroughly mixing, with each 1.