Bleeding can be stopped in 30~40 minutes after wisdom tooth extraction under normal circumstances, and you should bite the cotton roll for 30~40 minutes to stop bleeding after tooth extraction. Bleeding after tooth extraction under abnormal circumstances is one of the complications of tooth extraction, which is divided into primary bleeding and secondary bleeding.
1. Primary bleeding: occurs on the day of tooth extraction, after removing the cotton roll, there is still active bleeding, may be due to tearing of soft tissues, fracture of alveolar eminence, rupture of small blood vessels and other reasons. There may also be more than one bleeding caused by blood diseases.
2. Secondary bleeding: It is bleeding again because of subsequent infection or blood clot detachment, etc., when the bleeding has stopped on the day of tooth extraction.
If the bleeding is serious and difficult to stop, it is recommended to go to the hospital in time to clarify the cause of the bleeding and then carry out targeted treatment.