Relative analgesia (oxygen: nitrous oxide sedation) in general practice.
D000766:Anesthesia, Dental / Q000379:methods*; D000769:Anesthesia, Inhalation / Q000379:methods*; D006801:Humans; D009609:Nitrous Oxide / Q000008:administration & dosage / Q000378:metabolism
D009609:Nitrous Oxide