Wisdom teeth are the third molars that usually erupt after puberty and can erupt 0 to 4 in adults. Many patients are often faced with the question of whether their wisdom teeth need to be extracted due to infection or the discovery of buried wisdom teeth during routine examinations. Wisdom tooth infections are usually caused by the weakening of chewing power and the reduction of jawbone volume due to the prolonged history of eating cooked food during human evolution, which may result in insufficient space to accommodate the third molar, resulting in third molar blockage and poor local hygiene, as well as possible destruction of adjacent teeth and formation of cysts. Usually, there are three types of cases according to the eruption of wisdom teeth: first, normal eruption with good chewing function; or even if they do not erupt normally, they have good chewing function after local treatment. In the second category, the wisdom teeth do not erupt normally and do not destroy the adjacent teeth or form other lesions In the third category, the wisdom teeth cannot be retained because of their own lesions; or they do not erupt normally and may affect the occlusal relationship, cause repeated inflammation or destroy the second molars, form cysts or tumors, etc. Due to the relatively complex anatomical structure of wisdom teeth, it is relatively difficult to remove wisdom teeth and may cause the most complications, whether wisdom teeth need to be removed is not exactly the same for different doctors, but all need to be determined through clinical and imaging examinations. Some patients have normal chewing function after removing the surface gingiva or part of the bone, so it is also not necessary to extract. Some wisdom teeth will gradually fuse with the surrounding bone and do not need to be treated, while some buried wisdom teeth will form lesions over time and need to be treated as soon as possible if such a trend is found. In the third category, wisdom teeth should be extracted as soon as possible. Figure 1: The picture on the left shows that the surface gingival coverage of the wisdom tooth does not erupt normally, but the surface gingiva has normal chewing function after removal. Figure 2: The left figure shows the buried tooth, which has no effect on the surrounding tissues and does not need to be treated; the right figure shows that the buried tooth has a tendency to form a cyst and needs to be extracted as soon as possible. Figure 3: The most common case of buried wisdom tooth, which needs to be extracted as soon as possible. Figure 4: The lower arrow shows that a cyst has formed around the wisdom tooth and needs to be treated as soon as possible; the upper arrow shows that the maxillary wisdom tooth is horizontally buried and obstructed, which will destroy the adjacent teeth and needs to be extracted. Figure 5: The wisdom tooth is not erupted at all, has no clinical symptoms, is found during oral X-ray examination, and has no effect in the short term, but will destroy the adjacent teeth after a long time, and still needs to be extracted. Belongs to the third category