SINGAPORE - A visit to the dentist can be nerve-racking at the best of times - and especially so during a pandemic. Now Singapore researchers have invented a tent-like device designed to protect dentists and patients worried about catching Covid-19. The Dental Dart, which is placed around the patient's head, will soon be available to clinics locally and around the world at an affordable price. It was developed by four researchers from the National University of Singapore (NUS) to help dental staff, who have a high risk of contamination due to their close proximity to patients and exposure to infectious droplets or particles during routine procedures.