 SALT LAKE CITY, June 30, 2021 GLOBE NEWSWIRE -- SINTX Technologies, Inc. NASDAQ: SINT SINTX or the Company, an original equipment manufacturer of silicon nitride ceramic for medical and non-medical applications, announced today it has moved into the next phase of its relationship with O2TODAY and sold the first shipment of FleX SN-AP antipathogenic silicon nitride powder to O2TODAY for integration into a proprietary line of masks and filters. 