Wisdom teeth, also known as third molars, are the last teeth to erupt in the oral cavity, usually at the age of about 18. In the growth process of wisdom teeth, they often need to be extracted because of insufficient space for eruption or special location, causing various complications; some wisdom teeth have no obvious clinical discomfort, so they should be conservatively treated or extracted according to the specific situation. For wisdom teeth that are properly positioned, not enough to induce pericoronitis, and not causing damage to themselves or neighboring teeth, and do not produce obvious clinical discomfort, such as food impaction and pain, they do not need to be extracted. The main indications for wisdom tooth extraction are blockage, adjacent tooth lesion, decay, pericoronitis, etc. In addition, the upper and lower wisdom teeth can sometimes come into contact with the posterior alveolar nerve and the inferior alveolar nerve, resulting in obvious neuralgia, earache, migraine and other symptoms; in case of the above diseases caused by wisdom teeth, it is usually clinically recommended to remove them.