ENDODONTICS CLEARWATER, TRINITY & TAMPA, FL Dr. Kasem, Dr. Haller, Dr. Korn, Dr. Sainsbury, and Dr. DeCandia offer Root Canal Treatment, Retreatment, Mircosurgerical Treatment (Apicoectomy/Root Resorption Repair/Root Perforation Repair), and Traumatic Injuries. Our offices in Pinellas, Pasco, and Hillsborough counties are open Monday-Friday 8:00AM until 5:00PM.