smith is one of dr. harrington s 7,000 patients who might have been exposed to those viruses because of what s called risky practices by the doctor and his staff. it makes my skin crawl. it s horrifying. reporter: marissa s mom says dr. harrington took out her daughter s wisdom teeth in june 2011. what do you remember about getting your wisdom teeth out? i just thought he was a really nice guy, like there wasn t going to be any problems. obviously now i don t really feel like that. reporter: melissa is a nurse and understands the risk of infection is low but she s infuriated. i m angry. i feel like he s kind of let us down. i feel like he s let a lot of people down. reporter: dr. harrington wasn t home when he visited. both he and his lawyer aren t returning repeated calls. this woman, who would only identify herself as a friend and a patient, dropped off an easter lily.
i don t like needles. i don t like, really, testing. after this whole ordeal, i just want to be free. reporter: free from hiv and hepatitis. one of the 7,000 patients who might have been exposed to those viruses because of what oklahoma investigators call risky practices by the doctor and his staff. it makes my skin crawl. i think it s horrifying. reporter: marissa s mom says dr. harrington took out her daughter s wisdom teeth in june of 2011. what do you remember about getting your wisdom teeth out? i thought he was a really nice guy. there won t be any problems. now i don t feel like that. reporter: melissa is a nurse and understands the risk of infection is low, but she s infuriated. i m angry. i feel like he s kind of let us down and let a lot of people down. reporter: dr. harrington wasn t home when he visited,
smith is one of dr. harrington s 7,000 patients who might have been exposed to those viruses because of what s called risky practices by the doctor and his staff. it makes my skin crawl. it s horrifying. reporter: marissa s mom says dr. harrington took out her daughter s wisdom teeth in june 2011. what do you remember about getting your wisdom teeth out? i just thought he was a really nice guy, like there wasn t going to be any problems. obviously now i don t really feel like that. reporter: melissa is a nurse and understands the risk of infection is low but she s infuriat infuriated. i m angry. i feel like he s kind of let us down. i feel like he s let a lot of people down. reporter: dr. harrington wasn t home when he visited. both he and his lawyer aren t returning repeated calls. this woman, who would only identify herself as a friend and a patient, dropped off an easter lily. but unlike hundreds getting tested, she won t telling me, quote, i trust him.
any problems. you know, so, obviously, now, i don t really feel like that. reporter: melissa is a nurse and understands the risk of infection is low, but she s infuriated. i m angry. you know, i feel like he s kind of let us down. i feel like he s let a lot of people down. reporter: dr. harrington wasn t home when he visited. both he and his lawyer aren t returning repeated calls. this woman, who would only identify herself as a friend and patient, dropped off an easter lily. but unlike hundreds getting tested, she won t, telling me, quote, i trust him. this neighbor says he s known harrington for years. when you heard about these charges, the complaint against him by the board of dentistry, what did you make of it? couldn t believe it. he seems highly competent to me. just a smart guy and i was just shocked when i heard it and i feel badly for him. i feel badly for his patients and i hope i really hope there s some other explanation. reporter: an explanation for