Request A Quote

Airborne Viruses in Dentists

Published On: 18th Jun 2020

With the easing of the lockdown, dental surgeries are beginning to return to their daily routines. It has never been more important than now to ensure that the indoor air within practices is as pure as possible and providing the highest protection for both patients and staff. On paper there are many ways of achieving indoor air cleanliness, but the actual effectiveness of each method needs to be carefully considered.

Air conditioning fan coil and cassette systems are common within surgeries and as air recirculation systems they cannot simply be turned off as they are needed for air conditioning and temperature control. As a consequence, they will circulate any existing viruses and other airborne contaminants within a space.

They rely on different types of removeable mechanical air filters including fibreglass, fabric, electrostatic and ultra-violet. High efficiency particulate air filters (HEPA) are also an option and recognised for protection against allergies and can be up to 99.97% effective in screening contaminants. However, the challenge being set by the presence of new airborne viruses such as COVID-19 means that alternative, more effective solutions need to be considered. Due to the small size of such viruses, traditional filtration technologies are unable to trap viral particles.

In its section on air disinfection, The Handbook of COVID-19, Prevention and Treatment (The First Affiliated Hospital, Zhejang University School of Medcine) states that, “ plasma air sterilisers can be used and continuously run for air disinfection in an environment with human activity.” These types of steriliser use bipolar ionisation, a non-selective rapid killing technology offering a unique and safe approach to killing airborne viruses less than 2.5 microns in size (the COVID-19 virus often travels in biological aerosols from coughing and sneezing which range from 0.5 to 3 microns).

Independent testing has been carried out by Tayra, the Madrid based specialist HVAC company, and backed by the Spanish Ministry of Defence Biological Laboratory in Spain. It has proven the effectiveness of ionization technology developed by world leading manufacturer Plasma Air in the reduction of MS2 Bacteriophage, a surrogate for SARS-CoV2 (COVID-19), in indoor environments.

Plasma Air Ionization Proven to Reduce Coronavirus Surrogate MS2 Bacteriophage by 99% in Independent Spanish Testing


Adding a Plasma Air bipolar ionisation system to fan coil or AC systems’ air handling unit will distribute millions of positively and negatively charged oxygen ions into the air of an occupied space to remove viruses and other pathogens from the breathing zone. Plasma Air’s bipolar ionisation technology is a more effective solution than any other type of air filtration and is cost effective to run with low maintenance requirements.

Air Craft specialises in Indoor Air Quality solutions and the application of Plasma Air technology. “Whilst until now our proposition has been simply to improve indoor air quality, this pandemic has set new, much more serious challenges. Research and scientific testing tells us that proven Plasma Air technology represents the most effective solution for maximum effect and protection,” says Air Craft Managing Director Darren Johnson.

Please contact us for more information on Plasma Air solutions and details of the independent testing that supports the use of the company’s bipolar ionisation technology.