National Research Development Corporation

Denfotex Ltd.

Institute of Dental Surgery

Michael F Wilson

Wilson Harvey

Jill A Williams

Gavin John Pearson

David John Clements

Peter W Greig-Smith

A method of filling a dental root canal is disclosed herein. The method includes gaining access to the dental root canal and introducing a flowable photosensitizer into the dental root canal. After introducing the flowable photosensitizer into the dental root operation is performed for activating the flowable photosensitizer by exposing the walls of the dental root canal to light via an optical fiber within the dental root canal. Activating the flowable photosensitizer at least partially kills bacteria within the dental root canal and pulp chamber. After activating the flowable photosensitizer, the dental root canal is obturated.

Method and apparatus for filling a dental root canal

Laser treatment

Compounds of formula (I), wherein X.sup.1 and X.sup.5 are each separately selected from hydrogen and C.sub.1-4 alkyl, halogeno and halogeno-substituted C.sub.1-4 alkyl groups: X.sup.2, X.sup.3 and X.sup.4 are each separately selected from hydrogen and C.sub.1-4 alkyl, hydroxy, C.sub.1-4 alkoxy and phenoxy groups; R.sup.1 and R.sup.2 are each separately selected from hydrogen and C.sub.1-4 alkyl groups; R.sup.3 and R.sup.4 are each hydrogen or together constitute the second bond of a carbon-carbon double bond joining --CR.sup.1 R.sup.3 and --CR.sup.2 R.sup.4 ; and Y is hydroxymethyl, formyl, cyano, carbamoyl, carbamoyl N-substituted by one or two of the same or different C.sub.1-4 alkyl groups, carboxy or a carboxylic ester or carboxylate salt, are of value as avian repellents.

Avian control

Dentine protection

Periodontal disease is treated with a composition comprising a topically-retainable carrier such as an alginate gel and a non-toxic electron acceptor, such as a ferric compound or a redox organic dye, especially methylene blue or patent blue V, which does not supply molecular oxygen.

Treatment of periodontal disease

Growing community of inventors

Esher, United Kingdom

Michael F Wilson