Clearing the Air: Understanding Airborne Transmission of SARS-CoV-2, Air Quality and Viable Control Methods for Dental Offices

Research shows that long- and short-range aerosol inhalation are the predominant transmission modes for SARS-CoV-2 over other transmission pathways. Droplets generally fall within 6’ but if projected can travel much further. Aerosols can travel miles on air currents. The highest risk for exposure in dentistry is up-close inhalation of dense viral loads in aerosols, but pathogens can travel and concentrate wherever air stagnates. Studies show viable and infectious virus present in air during normal activities such as talking without aerosol generating procedures (AGPs). Respirators should be utilized for personal protective equipment (PPE) even without AGPs. Dental air quality standards are needed and the presenters offered their perspective, along with information on potential strategies to clean the air in dental offices.