The department is recommending that patients who fall into that time frame be screened for infection . NEW : Two vials of Demerol appeared to have been tampered with , regulatory group says . Arkansas : Dentist had been through drug withdrawal , patient 's attorney says . Arkansas health officials say a patient may have given patients contaminated drugs . The first lawsuit against an Oklahoma dentist whose patients may have been exposed to drugs is filed .
NEW : Two vials of Demerol appeared to have been tampered with , regulatory group says . Arkansas : Dentist had been through drug withdrawal , patient 's attorney says . Arkansas health officials say a patient may have given patients contaminated drugs . The first lawsuit against an Oklahoma dentist whose patients may have been exposed to drugs is filed .