(19)

(11)

EP 1 035 805 A1

(12)

(43) Date of publication: 20.09.2000 Bulletin 2000/38 (21) Application number: 98956733.4 (22) Date of filing: 25.11.1998

(51) International Patent Classification (IPC)7: A61C 5/12 (86) International application number: PCT/CA9801/091 (87) International publication number: WO 9927/866 (10.06.1999 Gazette 1999/23)

(84) Designated Contracting States: AT CH DE DK FR LI NL SE (30) Priority: 02.12.1997 CA 2223359 (71) Applicant: Mercor Dental Products Inc. Calgary, Alberta T2P 2T5 (CA)	(72) Inventors: MCKENNA, Mark, H. Canmore, Alberta T1N 2B7 (CA) HAGUE, Anthony, M. Canmore, Alberta T1W 1S4 (US) (74) Representative: Harding, Charles Thomas  D. Young & Co.21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)