title: Administration of local anesthesia and nitrous oxide analgesia by dental hygienists?
mesh_terms: D000766:Anesthesia, Dental; D000769:Anesthesia, Inhalation; D000772:Anesthesia, Local; D003756:Dental Hygienists; D006801:Humans; D009609:Nitrous Oxide
chemical_list: D009609:Nitrous Oxide