In order to avoid infections such as food debris falling into the extraction socket, it is common to chew on the affected side of the tooth at least 7 days after the extraction of an impacted tooth. In general, you should not chew on the affected side of the tooth for at least 7 days after the extraction. This is because during this time, the blood clot in the extraction socket has not matured, and if food debris, etc., falls into the extraction socket, it is likely to lead to a post-extraction infection. After 7 days, chewing food with the affected tooth is not completely prohibited, because at this time, the surface of the clot in the extraction socket has been covered with a complete epithelium, and the extraction socket has matured mechanically, even if there is food debris falling into the extraction socket at this time, as long as attention is paid to cleaning the oral cavity after meals, it will not cause infection in general. If there is any abnormality such as infection after extraction of retained teeth, it is recommended to consult a doctor in time to improve the relevant examination and standardize the treatment.