After a tooth removal, the area is like an open wound. The blood from the surrounding bone flows into the area and forms a clot. This clot promotes healing of the socket. The initial healing takes a 7-10 days. It takes 5-6 weeks for the area to heal completely. A mild discomfort in the extracted area for the first 2-3 days is normal. Your dentist will instruct you on the post extraction care. In cases of a wisdom tooth removal, where some amount of bone is trimmed, the socket may take a little longer time to heal.