Abstract
Two-hundred-and-forty-one treatment sessions with nitrous oxide oxygen sedation were performed in 194 patients undergoing ambulatory oral surgery procedures. Removal of mesiodentes and tooth transplants were the most frequent procedures in age groups under 13 years, while removal of impacted teeth was predominant in older age groups. Local anesthesia was used in addition to inhalation sedation in 238 sessions. Median gas volume rate was 10 l/min, median concentration 50% and median duration of procedures 31 min. In 10 sessions (4.1%) sedation was not accepted, while in 25 (10.4%) sessions the procedure could be completed with some difficulty. No potentially dangerous complications were noted. Side effects occurred in 18 sessions in 16 patients. All side effects were minor and easily handled. Logistic regression analysis revealed that failure, defined as poor acceptance and/or presence of side effects, was associated with ASA class 2 and general apprehension, especially based on previous negative experience with medical or dental treatment. Nitrous oxide oxygen sedation is a reliable, efficient and safe adjunct to local anesthesia in both healthy children and adults undergoing ambulatory oral surgery procedures.
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