Laughing gas tooth extraction is a popular treatment method. Nowadays, oral treatment advocates comfort treatment, where the patient inhales laughing gas first and is in a state of relaxation. At this time, the patient is injected with anesthesia, which minimizes the patient’s pain threshold and makes it almost impossible to feel any pain. After the anesthetic has taken effect, the tooth is extracted with the aid of laughing gas, the patient’s tension is relieved and the extraction process may be forgotten by the patient. Tooth extraction through laughing gas can improve the comfort level of dentistry treatment, basically by inhaling laughing gas to make the patient emotionally relieved first, and then follow the normal tooth extraction process.