Background/aim: The aim of this study was to investigate the effects of conscious sedation with 40% nitrous oxide/oxygen (N2O/O2) on cognitive functions.
Materials And Methods: Forty dental patients referred to the sedation unit at Gazi University Faculty of Dentistry Department of Oral and Maxillofacial Surgery received a combination of 40% N2O/O2 inhalation for conscious sedation. Psychometric tests were applied three times: before sedation, during sedation, and at the end of the recovery, for assessing cognitive functions.