Sirona Files Shelf Registration Statement on Behalf of Shareholder

Business Wire, August 20, 2008

LONG ISLAND CITY, N.Y. -- Sirona Dental Systems, Inc., (Nasdaq: SIRO), a leading global manufacturer of technologically advanced, high quality dental equipment, announced today that it filed a shelf registration statement with the Securities and Exchange Commission.

The shelf registration statement was filed on behalf of Sirona Holdings Luxco S.C.A. ("Luxco"), a Luxembourg-based holding entity owned by funds managed by Madison Dearborn Partners ("MDP"), Beecken Petty O'Keefe and certain members of the Sirona management team. The shelf registration statement registers for resale (and other dispositions) 36,972,480 shares of the Company's stock.

In the event that any of the shares covered by the registration statement are sold by Luxco, the selling shareholder will receive all of the net proceeds from the sale of the common stock.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. A copy of the prospectus included in the registration statement may be obtained from the Company at the address below.

About Sirona Dental Systems, Inc.

Sirona develops, manufactures, and markets a complete line of dental products, including the CAD/CAM restoration equipment (CEREC), digital and film-based intra-oral, panoramic and cephalometric X-ray imaging systems, dental treatment centers and handpieces.

This press release contains forward-looking information that involve substantial risks and uncertainties or other factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. You can identify these statements by the use of words such as "may," "could," "estimate," "will," "believe," "anticipate," "think," "intend," "expect," "project," "plan," "target," "forecast", and similar words and expressions which identify forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements are not guarantees of future performance and involve known and unknown risks and uncertainties, and other factors. Readers are cautioned not to place undue reliance on such statements, which speak only as of the date hereof. For a discussion of such risks, uncertainties and other matters that could cause actual results to differ materially, including risks relating to, among other factors, the market for dental product and services, pricing, future sales volume of the Company's products, the possibility of changing economic, market and competitive conditions, dependence on products, dependence on key personnel, technological developments, intense competition, market uncertainties, dependence on distributors, ability to manage growth, dependence on key suppliers, dependence on key members of management, government regulation, acquisitions and affiliations, readers are urged to carefully review and consider various disclosures made by the Company in its Annual Report on Form 10-K and in its reports on Forms 10-Q and 8-K filed with the U.S. Securities and Exchange Commission. The Company assumes no obligation to update any forward-looking statements contained in this document or the attachments to reflect new information or future events or developments after the date any such statement is made.