Postgraduate teaching of relative analgesia with nitrous oxide and oxygen.
D000698:Analgesia; D000700:Analgesics; D000758:Anesthesia; D000766:Anesthesia, Dental; D004497:Education, Dental; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen
D000700:Analgesics; D009609:Nitrous Oxide; D010100:Oxygen
ANESTHESIA, DENTAL; EDUCATION, DENTAL; NITROUS OXIDE; OXYGEN