de Jesus Levi Saulo Rodrigues, Vieira Bruno Dezen, Sverzut Alexander Tadeu
Postgraduate program in Oral and Maxillofacial Surgery, Faculdade de Odontologia de Piracicaba - Universidade Estadual de Campinas - UNICAMP - Av. Limeira, 901 - Areião, Piracicaba - SP 13414-903, Brasil.
Division of Oral and Maxillofacial Surgery, Faculdade de Odontologia de Piracicaba - Universidade Estadual de Campinas - UNICAMP - Av. Limeira, 901 - Areião, Piracicaba - SP 13414-903, Brasil.
J Surg Case Rep. 2025 Sep 5;2025(9):rjae639. doi: 10.1093/jscr/rjae639. eCollection 2025 Sep.
Impacted mandibular third molars are classified by its relation with the second molars and with the ascending ramus of the mandible. Ectopic third molars do not obey this classification, being possibly found in the condylar region, in the ascending ramus of the mandible, in the coronoid process or in the base of the mandible. This article aim to present a case of an ectopic mandibular third molar associated with a dentigerous cyst that was removed using a Risdon's approach. A 49-year-old male patient was referred, after a radiographic finding, for evaluation of the lower right third molar (48) in an ectopic position associated with a radiolucent image, suggestive of cystic lesion, treated with extraoral submandibular approach. This case report can help other maxillofacial surgeons in decision making when they come across with a similar case, reducing the morbidity and improving the surgical results.
阻生下颌第三磨牙根据其与第二磨牙及下颌升支的关系进行分类。异位第三磨牙不符合这种分类，可能出现在髁突区、下颌升支、冠状突或下颌骨基底。本文旨在介绍一例与含牙囊肿相关的异位下颌第三磨牙病例，该病例采用里斯登入路进行了切除。一名49岁男性患者经影像学检查发现右下第三磨牙（48）异位，伴有透光影像，提示囊性病变，遂转诊来评估，采用口外下颌下入路进行治疗。本病例报告可帮助其他颌面外科医生在遇到类似病例时做出决策，降低发病率并提高手术效果。
