An extraction is the removal of a tooth. Extractions are always the last resort in dentistry, but there are several reasons why a tooth might need to be extracted. Teeth can be damaged by trauma, decay, and infection. When extractions are required, the tooth and the area around it are numbed completely. A small amount of bleeding is normal, as your mouth will replace the removed tooth root by forming a blood clot in the area. Caring for your mouth after an extraction is very important. Your dentist will explain how you should care for the area of the extraction. It is important to allow your mouth time to heal, so avoid activities like smoking, drinking through a straw, or eating foods that may dislodge the blood clot and aggravate the area.