Hong Kong police have arrested a 72-year-old local man for allegedly practising dentistry illegally at a shop used by a mainland Chinese dental clinic to promote its business in the city, following calls from the local industry for tighter regulatory oversight of such activities. The arrest was made during a joint operation conducted by police and the Department of Health on Thursday at a shop on 37 King’s Road in North Point. The shop had been used to advertise a mainland clinic’s services,...