STEVENSON, Md.--(BUSINESS WIRE)--The securities litigation law firm of Brower Piven, A Professional Corporation, has commenced an investigation into possible breaches of fiduciary duty and other violations of state law by the Board of Directors of Sirona Dental Systems Inc. (NasdaqGS: SIRO) (“Sirona Dental” or the “Company”) relating to the proposed buyout of the Company by DENTSPLY International Inc. Under the terms of the transaction, Sirona Dental shareholders are anticipated to receive 1.81