title: Relative analgesia. An evaluation of the efficacy and safety.
mesh_terms: D000293:Adolescent; D000766:Anesthesia, Dental / Q000379:methods*; D000769:Anesthesia, Inhalation / Q000379:methods*; D001794:Blood Pressure / Q000187:drug effects; D002648:Child; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D009609:Nitrous Oxide / Q000494:pharmacology; D010100:Oxygen / Q000494:pharmacology; D012119:Respiration / Q000187:drug effects
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen