Tulsa dentist whose clinic led thousands to get tested surrenders professional license

OKLAHOMA CITY (AP) -- A Tulsa-area dentist has surrendered his professional license after health officials shut down his practice claiming his equipment was rusty and his employees reused needles. Scott Harrington permanently surrendered his license Friday to the State Board of Dentistry. Harrington's two Tulsa-area clinics have been closed since March 2013, when state health officials urged about 7,000 of his current and former patients to get tested for the diseases.Health officials say investigators found rusty instruments and potentially contaminated drug vials at Harrington's clinics. They say a machine designed to sterilize tools wasn't being used properly.More than 4,200 patients were tested at state clinics, but health officials determined that only one individual contracted a disease, hepatitis C, at the clinics.