Water Saliva Aerosol Defender The Covid-19 pandemic, currently ongoing worldwide, concerns a disease whose transmission occurs by air. This represents a risk to the health of dental operators who, during the delivery of therapies, are unable to maintain the usual safety distance from the patient. Given the number of procedures that generate a high quantity of aerosols, operators are highly exposed to the risk of coming into contact with salivary fluids, mucus and blood from positive, symptomatic and asymptomatic patients. WS Aerosol Defender is part of the set of measures and devices that aim to effectively interrupt the epidemiological chain.