Studies have shown that even with engineering controls such as water and high volume suction, that the removal of mercury dental fillings generates mercury contaminated particulate matter. Some of these particles will bypass suction controls and be deposited on the face and neck of the dentist and assistant, where it will continue to off gas or be absorbed into the skin, thus exposing dental professionals after their respirators have been removed. Faceshields are a vital component to preventing mercury particulate from landing on the face and neck of dental professionals. Likewise, safety glasses will protect your eyes. Faceshields with protection drapes will provide added protection from mercury particulate matter. Faceshields will be contaminated after each mercury filling removal and thus are one time use items, so please order a monthly amount equal to the number of amalgam removal sessions you perform each month. Any items present during an amalgam removal that will be reused should undergo thorough cleaning to remove mercury.