The wisdom tooth, scientifically known as the third molar, is the eighth tooth from the center backwards. It is the last of all teeth to erupt, and erupts around the age of 20. Clinically, gum swelling and pain caused by the eruption of the wisdom tooth is common, and the inflammation around the crown of the wisdom tooth becomes “wisdom tooth pericoronitis. As people nowadays eat increasingly fine food without excessive chewing, the jawbone gradually becomes narrower, and there is no excessive wear and tear on the teeth that erupt first; by the time the wisdom teeth erupt, there is no extra space for their full growth. As a result, the wisdom teeth can only partially erupt or cannot erupt at all, leading to the phenomenon of blockage, which does not play a chewing role. What’s worse, because the blind pocket formed by the gums wrapped around the wisdom teeth can easily hide food debris, which cannot be removed by brushing, and the warm and humid environment in the blind pocket makes the retained food debris easy to rot, so bacteria can take advantage of the situation and lead to infection. Therefore, wisdom teeth often make recurring peri-coronitis, painful, only to be removed to cure. Conversely, if you insist on not removing them and delay the disease, the inflammation will spread down the surface of the jaw bone to the cheek, first swelling and pain, and then penetrating the buccal muscle to the subcutaneous area, forming a subcutaneous fistula. The inflammation can break through the skin to form a fistula that drains pus and leaves a more visible scar on the face, damaging the appearance. In addition, the latent food debris can produce acid and cause continuous damage to the front second molars, leading to “worm teeth” and periodontal inflammation of the second molars. In severe cases, the second molar may also need to be extracted. In mild cases of pericoronitis, a pericoronial rinse can be performed in the hospital and oral antibiotics can be administered if necessary; however, in severe cases, systemic medication is required. Although the extraction of obstructed wisdom teeth has always been a complicated procedure and requires a high level of skill, due to the continuous improvement of surgical instruments, it is now possible to completely abandon the hammer chisel and instead use a turbine head with minimal vibration to extract the tooth, which greatly reduces the patient’s pain. As long as the procedure is performed by an experienced surgeon, there is little risk. It is worth noting that the extraction operation is not suitable when pericoronitis occurs in wisdom teeth and should be performed after the inflammation has been eliminated. The difficulty of extracting wisdom teeth with different degrees of obstruction varies, as does the healing recovery time after the operation.