Dr Lee Shean Woei, IMU Alumni and Dental Officer at IMU Healthcare Oral Health Centre, shares preventive measures – 3C (Crowded Place, Confined Space, Close Conversation) and 3W (Wash, Wear, Warn) – practiced by dentists when treating patients during this Covid-19 period. Article is in Mandarin. Learn more about this at Dentist Practise 3C and 3W in Principle for Disease Prevention SOP (Sin Chew, 5 June 202o). Online version is available at Dentist Practise 3C and 3W in Principle for Disease Prevention SOP (Sin Chew, 5 June 202o)