Do wisdom teeth always need to be extracted?

Wisdom teeth do not necessarily need to be extracted—it depends on the specific situation. Wisdom teeth, also known as third molars, grow at the end of the alveolar bone. Generally, there is insufficient space for their growth, and with additional obstruction from adjacent teeth and soft tissues, they often erupt in abnormal positions, directions, or heights. Only a small number of wisdom teeth can grow in normally; most emerge crookedly, pressing against neighboring teeth, some only partially erupting while others remain completely impacted. Even if wisdom teeth are not causing pain, caution is still necessary. Clinically, the following are common indications for wisdom tooth extraction: - Dental caries in the wisdom tooth: apart from simple, shallow occlusal decay that can be easily restored, interproximal caries or deep cavities usually require extraction. - Causing damage to adjacent teeth: extraction is recommended. - Causing pericoronitis: extraction is advised after the inflammation subsides. - The opposing wisdom tooth is missing, leading to over-eruption that affects occlusion: extraction should be performed. - Impacted wisdom teeth that frequently cause inflammation or are diagnosed as potential sources of infection should be removed. - Wisdom teeth associated with odontogenic cysts or tumors must be extracted. - To ensure orthodontic treatment outcomes, wisdom teeth are often removed. - When impacted wisdom teeth are suspected as the cause of unexplained neuralgia or considered a focus of infection ("focal tooth"), extraction is indicated.