Video: Rogue B.C. dentist arrested in Toronto Tung Sheng Wu, also known as David Wu, is believed to have been practicing dentistry illegally in B.C. since the 1990s. Aug. 7, 2012. College of Dental Surgeons of British Columbia Published Sunday, Nov. 17, 2013 11:21PM EST Last updated Sunday, Nov. 17, 2013 11:23PM EST