What should you do if bleeding continues hours after a tooth extraction?

The dentist may have provided gauze for you to apply to the wound. If you have followed their instructions, and the bleeding is more than oozing, you should contact them ( they may have an after hours number) or a local hospital. A wound will bleed for about a half-day, but excessive bleeding should be treated. A clot needs to form at the wound site, and anything that prevents this should be avoided, including frequently disturbing the site, blowing your nose a lot and coughing. Reduce activity, but keep the head elevated. See the Related Links below, and seek medical help if your situation seems out of the ordinary.