title: The techniques of oxygen-nitrous oxide sedation (relative analgesia) in the treatment of apprehensive children.
mesh_terms: D000293:Adolescent; D000766:Anesthesia, Dental / Q000379:methods*; D001007:Anxiety / Q000517:prevention & control*; D002648:Child; D002652:Child Behavior; D002675:Child, Preschool; D003729:Dental Care; D006801:Humans; D009609:Nitrous Oxide; D010100:Oxygen
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen