Under normal circumstances, stitches are usually removed 5-7 days after tooth extraction, and it is recommended that it should not be more than 2 weeks at the latest. After tooth extraction, if there is more trauma, gum tearing or bleeding, suture treatment is usually required, mostly seen in the extraction of obstructed teeth and ambiguous teeth. The sutures are usually removed in 5-7 days after surgery, and if the sutures cannot be removed for special reasons at the clinic, it is recommended that it should not be longer than 2 weeks. If the sutures are not removed for a long time, it is usually difficult to clean them and they are prone to attach food residues and plaque, which can affect the normal healing of the extraction wound. However, if the sutures are absorbable, they can be left in place and will be slowly absorbed by the body. It is recommended to follow the medical advice after tooth extraction, brush and rinse your mouth after 24 hours, maintain good oral hygiene, do not eat too hot or too hot food, do not smoke or drink, do not lick or sip the extraction wound to avoid delayed healing. If the tooth extraction is traumatic, take anti-inflammatory drugs to prevent infection.