Wu, who also goes by the name Tung Sheng Wu, was not present in court. He was found guilty "in absentia" and his whereabouts remain unknown.
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The B.C. College of Dental Surgeons been trying to find him since August, when officials searched his Burnaby home and seized dental supplies and shot video of dirty and outdated equipment.
Since then, a private investigator the college hired has been following up on almost two-dozen tips on Wu's whereabouts without any luck.
Wu did not show up for a court date in late September, and today was his last chance to tell the court how he ran the alleged illegal practice for more than a decade, seeing at least 1,500 patients.
The college argues he endangered the health of people who sought his underground dentistry, and say he should face both jail time and fines.
Meanwhile, Fraser Health says it has contacted 450 of Wu's former patients, urging them to get tested for hepatitis and HIV.
Officials say so far not one of them has tested positive for an infection as a result of seeing Wu.