Which of the following items of personal protective equipment will protect the airway from aerosol contamination?

A face mask is designed to create a barrier that reduces the risk of inhaling airborne pathogens, including aerosols generated during dental procedures. These masks filter out large particles and some smaller ones, providing a critical line of defense for dental professionals and patients against the transmission of infectious agents. By covering the nose and mouth, a face mask effectively minimizes the risk of respiratory exposure to contaminants that may be present in the aerosolized environment typical of many dental treatments.

In contrast, nitrile gloves primarily protect the hands from contact with potentially infectious materials and do not provide any airway protection. Safety glasses safeguard the eyes from splashes or debris but do not address inhalation risks. A visor offers face protection but may not provide the same level of airway filtration as a face mask. Therefore, a face mask is the most suitable personal protective equipment for protecting the airway from aerosol contamination in a dental setting.