  -  A Tulsa-area dentist whose use was close down since his apparatus was rusty and his employees reused needles was obliged for a nation's initial delivery of hepatitis C between patients in a dental office, Oklahoma health officials pronounced Wednesday.  Citing genetic contrast achieved during a Centers for Disease Control and Prevention, Oklahoma's state epidemiologist pronounced there was during slightest one instance in that Dr. W. Scott Harrington's use widespread an spreading disease.  "This is a initial documented news of patient-to-patient delivery of hepatitis C pathogen compared with a dental environment in a United States," Dr. Kristy Bradley 