If the tooth is too severely damaged, decayed or if there is an infection of some sort and treatment cannot cure the infection, it must be removed.
Usually before the extraction process dentist gives a local anesthetic to numb the area of tooth extraction. In some cases (many of the teeth need to be extracted or the tooth pulling process is a difficult one and requires surgery) a general anesthetic may be used, so a patient will sleep through the procedure and won’t feel any discomfort.
Dental extraction can cause a variety of complications (swelling, bruising, dry socket, infection, prolonged bleeding, nerve injury, etc.). The most dangerous one is when bacteria in the mouth enters the bloodstream and thus can cause different kinds of infections in the body. In these situations antibiotics are prescribed by dentist. It reduces the risk of infections up to 70%.