[Sedation and analgesia with nitrous oxide].

Analgesic-sedation with nitrous-oxide has been used in 609 patients with excellent clinical results. The average concentrations used have been 40% N2O and 60% O2 and a flow of eight liters per minute. Patients have behaved very cooperatively when treated previously with analgesic-sedation allowing us to perform treatment such as scaling and root planning and other clinical procedures without applying local anesthetics. Analgesic-sedation is a very technique-sensitive procedure and a thorough training of clinical personal is completely mandatory.