title: [Analgesia by nitrous oxide and oxygen].
mesh_terms: D000698:Analgesia / Q000379:methods*; D000766:Anesthesia, Dental / Q000379:methods; D000769:Anesthesia, Inhalation / Q000379:methods*; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen
vernacular_title: Analgesia pelo óxido nitroso e oxigênio.