The duration of anesthesia after tooth extraction is usually about 1 and a half to 2 hours before it wears off. Therefore, it is recommended not to eat during this period for the following reasons: first, eating during this period may increase the bleeding. Second, it may cause food residues to fall into the alveolar sockets, leading to secondary infection. Third, when eating, it is easy to bite the cheek and tongue without any sensation due to anesthesia. Fourthly, if food falls into the alveolar sockets, it will affect the healing of the wound and there is a possibility of getting dry socket. Therefore, it is not allowed to eat anything within 2 hours after tooth extraction, and you must follow the doctor’s advice and seek medical attention promptly if you have pain and bleeding symptoms.