Commonly referred to as laughing gas, nitrous oxide is used in surgery and dentistry for its pain blocking and reducing effects. It is known as “laughing gas” due to the euphoric effects of inhaling it. The administration of nitrous oxide is used to enhance patient comfort and relieve anxiety for patients of all ages. The gas (a nitrous oxide and oxygen mixture) is inhaled through a face mask. The amount of gas that you receive is monitored and controlled by the dentist to ensure your safety. You will begin to relax and will not recognize pain, so the dentist can perform your dental work while you stay completely comfortable. The effects of nitrous oxide decrease once the mask is removed, such that if the gas is the only anesthesia that you receive, you will very likely be capable of driving yourself home following the visit and can continue your daily activities as normal.