Wisdom teeth removal and retention should be decided according to the degree of wisdom teeth obstruction, orientation and the presence of chewing function, and whether there are frequent complications such as inflammation. Therefore, wisdom teeth with the following comorbidities should be extracted: 1. Buccally oriented wisdom teeth that have no chewing function and often bite through the buccal mucosa may become the focal point of the disease that leads to buccal mucosal ulceration, infection, erosion, and even pre-cancerous lesions, and they should be extracted at an early stage. 2. 2. Vertical wisdom teeth with insufficient space for eruption and often associated with acute and chronic pericoronitis have become focal teeth that affect health and should be extracted. 3. Horizontal and proximally tilted wisdom teeth, although asymptomatic for the time being, the presence of the wisdom teeth can cause cavities in the cervical area of the distal and middle neighboring teeth of the second molar. In order to protect the second molar which has important chewing function, it is advocated to remove this kind of blocked wisdom teeth at an early stage. (4) Wisdom teeth that cause crowding and need to be removed for orthodontic treatment. Wisdom teeth that cause jawbone tumors need to be removed.