title: An approach to gas evacuation in the dental operatory.
mesh_terms: D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000397:Air Pollution / Q000517:prevention & control*; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D000777:Anesthetics; D003748:Dental Equipment / Q000592:standards
chemical_list: D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000777:Anesthetics