After the extraction of the long pointed protrusion should go to the hospital to check the cause, common in the bone protrusion, need to be trimmed about 3 months after the extraction of the tooth, may also be caused by infection need medication or surgical treatment. 1. Bone protrusion: If the alveolar bone is not reset or the alveolar spacing is not repaired in time during tooth extraction, bone protrusion may appear during the wound healing process after tooth extraction, which is hard to touch with a tingling sensation, generally about 3 months after tooth extraction, the alveolar protrusion is repaired and the bone spurs are removed. 2. Infection: after tooth extraction, if the wound is infected, there may be redness, swelling and pain around the wound, visible pus formation, the general use of antibiotics (amoxicillin, metronidazole) anti-infection, abscess formation requires surgical incision and drainage. The specifics of the long cusp after tooth extraction need to first go to the hospital to check the cause of the targeted treatment.