Wisdom teeth with only a stump left should be extracted to avoid pericoronitis or odontogenic gap infection. Wisdom tooth stumps have no value for preservation and need to be extracted in a timely manner. It is easy for bacteria to grow around the stump, resulting in wisdom tooth pericoronitis, poor oral hygiene leading to apical infections, and serious cellulitis of the maxillofacial region. And wisdom teeth itself in the oral cavity in the last position, do not need to bear a lot of chewing function, plus itself is the stump, and the opposite jaw teeth without contact, no bite, after the extraction of chewing food efficiency is not much impact. Therefore, wisdom teeth stumps are recommended to be removed as early as possible in the absence of infection, and when inflammation exists, it is necessary to take oral medication to relieve it and then remove it, which can be done by visiting a dentist.