Sirona announces appointment of John Sweeney as director of investor relations

Author: Mendoza College

LONG ISLAND CITY, N.Y. & BENSHEIM, Germany--(BUSINESS WIRE)--Sept. 7, 2006--Sirona
(Nasdaq: SIRO), one of the leading global manufacturers of high-quality dental equipment and
technologies, today announced the appointment of Gregory P. Leahy as General Counsel and John Sweeney as Director of Investor Relations.

For the past three years, Mr. Sweeney was Director of Investor Relations for Weight Watchers International, Inc. Prior to that assignment, Mr. Sweeney was an associate equity research analyst at Smith Barney. Mr. Sweeney received his M.B.A. from the University of Notre Dame and is a Chartered Financial Analyst.