Inhalation sedation using Nitrous Oxide (N2O) and Oxygen (O2) is an ideal clinical sedative. After about five minutes of breathing the gas, a euphoria overtakes the anxiety that many people experience in the dental chair. Couple this “laughing gas”, as many refer to it, with some music of your choice using cordless headphones, and your dental procedure changes from a stressful ordeal to a blissful experience.