In this Thursday, March 28, 2013, photo, Dr. Frank Wright, a forensic dentist, studying evidence in a bite mark analysis, which he practices on a regular basis in between seeing patients, is photographed at his office in Cincinnati. (AP Photo/Al Behrman)

Associated Press
In this Thursday, March 28, 2013, photo, Dr. Frank Wright, a forensic dentist, studying evidence in a bite mark analysis, which he practices on a regular basis in between seeing patients, is photographed at his office in Cincinnati. (AP Photo/Al Behrman)
In this Thursday, March 28, 2013, photo, Dr. Frank Wright, a forensic dentist, studying evidence in a bite mark analysis, which he practices on a regular basis in between seeing patients, is photographed at his office in Cincinnati. (AP Photo/Al Behrman)
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