Generally about 20 days after tooth extraction, you can clean your teeth, because the wound after extraction needs time to heal, and you can clean your teeth after the connective tissue replaces the granulation tissue is basically completed, if inflammation and infection occurs, you need to clean your teeth after the inflammation is eliminated. 1. The wound formed by tooth extraction will form a blood clot after 15~30 minutes, the blood clot will be mechanized after about 24 hours to form granulation tissue, the connective tissue will start to replace the granulation tissue after 3~4 days, and the whole process will be completed in about 20 days after tooth extraction. 2. Early scaling may lead to dislodging of the blood clot, causing pain, and may also lead to bacteria entering the extraction wound and causing infection, affecting its normal healing. It is recommended to visit a regular medical institution to receive professional treatment.