Nitrous oxide, commonly known as laughing gas, has been used in dentistry for over 150 years. It is a safe and effective sedative that can help patients relax during dental procedures. Nitrous oxide is administered through a mask that fits over the patient's nose. It takes effect quickly and wears off just as quickly, making it a good choice for short procedures.
Nitrous oxide is not a general anesthetic, so patients remain conscious and able to respond to the dentist's instructions. It can help to reduce anxiety, pain, and gagging. Nitrous oxide is also helpful for patients who have difficulty getting numb from local anesthesia.