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We performed a 6-year retrospective review and found 3 cases with displaced implants in the maxillary sinus. Detailed information, including surgical indications and dental implant removal methods, is provided. Dental implants can be dislocated to the maxillary sinus perioperatively or postoperatively. Endoscopic sinus surgery can be performed to remove the implant and restore sinus patency. If the implant is displaced to deeper areas (commonly anterior and inferior) of the maxillary sinus, a prelacrimal recess approach can provide a panoramic view of the maxillary sinus and is a good alternative to the Caldwell-Luc operation in terms of mucosal preservation and postoperative complications.<\/jats:p>","DOI":"10.1177\/0145561320931304","type":"journal-article","created":{"date-parts":[[2020,6,11]],"date-time":"2020-06-11T16:19:21Z","timestamp":1591892361000},"page":"995S-998S","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Removal of Displaced Dental Implants in the Maxillary Sinus Using Endoscopic Approaches"],"prefix":"10.1177","volume":"100","author":[{"given":"Po-Hung","family":"Chang","sequence":"first","affiliation":[{"name":"Department of Otolaryngology\u2013Head and Neck Surgery, Chang Gung Memorial Hospital, Kwei-Shan, Taoyuan, Taiwan"},{"name":"School of Medicine, Chang Gung 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