title: Non-polluting dental analgesia.
abstract: Three anaesthetic circuits for use in nose-piece application of inhalation analgesia are described. An ejector flowmeter is used for the scavenging of overspill gas.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control; D000766:Anesthesia, Dental / Q000295:instrumentation*; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D003814:Dentistry, Operative; D006801:Humans