Wisdom teeth should be extracted in the case of recurrent inflammation, food impaction or no opposing teeth. 1. Ambidextrous: anterior or horizontal blocked teeth, and the gap between the front teeth, easy to retain food debris, causing wisdom teeth pericoronitis recurrence, localized swelling, and even limited mouth opening and other symptoms, but also easy to lead to caries of the front teeth, as soon as possible to remove the wisdom teeth. 2. Food impaction: Due to the variation of wisdom teeth form, it is easy to appear with the front teeth of the poor adjacency, food impaction, the gums produce stimulation is also easy to lead to the occurrence of dental caries, need to be extracted as soon as possible. 3. Wisdom teeth without opposing teeth: the opposing congenital wisdom teeth are missing, or have been extracted, wisdom teeth elongation, affecting the bite and embedded food, such wisdom teeth also need to be removed as soon as possible. Most of the wisdom teeth need to be removed. It is recommended to consult a doctor as soon as possible for examination and removal of wisdom teeth.