After wisdom teeth are removed, the remaining cavity is able to repair itself and does not require special treatment, but you should pay attention to oral hygiene. After wisdom teeth extraction, there will be a localized cavity, which is also known as the extraction socket. Since human tissue and mucous membrane have self-repairing function, it does not need special treatment and can heal gradually. Generally after about a month, the soft tissues around the extraction socket can cover the socket basically. During the process of extraction socket restoration, attention should be paid to oral hygiene, especially in the early stage of extraction, it is recommended to use saline rinsing. At the same time, teeth should be brushed at least twice a day and mouth rinsing should be done after meals to avoid food residues left in the mouth and extraction socket. If any abnormal discomfort occurs, you should consult a doctor in time.