Nitrous oxide, often referred to as “laughing gas,” is a safe and effective sedative that can help patients relax during dental procedures. It is administered through a mask that fits over the nose and mouth. As the patient inhales the gas, they will feel a sense of relaxation and euphoria. Nitrous oxide is a particularly good option for patients who are anxious about dental procedures or who have a strong gag reflex. It can also be used to help patients who are sensitive to pain. After the procedure, the effects of nitrous oxide wear off quickly, allowing the patient to return home shortly after the appointment.