Benzinga's Top Upgrades By: Benzinga via Benzinga September 22, 2014 at 09:30 AM EDT Analysts at Baird upgraded Sirona Dental Systems (NASDAQ: SIRO) from Neutral to Outperform. The target price for Sirona Dental Systems ... Read More >> Related Stocks: Dun & Bradstreet Leggett & Platt Polished.com Inc.