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(11)

EP 1 968 450 A1

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(43) Date of publication: 17.09.2008 Bulletin 2008/38 (21) Application number: 06837936.1 (22) Date of filing: 16.11.2006

(51) International Patent Classification (IPC):  A61B 6/14(2006.01) G03B 42/04(2006.01) (86) International application number: PCT/US2006/044714 (87) International publication number: WO 2007/061865 (31.05.2007 Gazette 2007/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 17.11.2005 US 737499 P (71) Applicant: DENTSPLY INTERNATIONAL, INC. York, PA 17405-0872 (US)	(72) Inventors: STECK, John, E. Round Lake, IL 60073 (US) BROWN, Kimberly, C. Huntly, IL 60142 (US) SULLIVAN, Nicole, L. Elgin, IL 60120 (US) (74) Representative: Blodig, Wolfgang  Wächtershäuser & Hartz Patentanwälte Weinstrasse 8 80333 München 80333 München (DE)