Accidental displacement and migration of endosseous implants into adjacent craniofacial structures: A review and update

Abstract

Objectives: Accidental displacement of endosseous implants into the maxillary sinus is an unusual but potential complication in implantology procedures due to the special features of the posterior aspect of the maxillary bone; there is also a possibility of migration throughout the upper paranasal sinuses and adjacent structures. The aim of this paper is to review the published literature about accidental displacement and migration of dental implants into the maxillary sinus and other adjacent structures. Study Design: A review has been done based on a search in the main on-line medical databases looking for papers about migration of dental implants published in major oral surgery, periodontal, dental implant and ear-nose-throat journals, using the keywords “implant,” “migration,” “complication,” “foreign body” and “sinus.” Results: 24 articles showing displacement or migration to maxillary, ethmoid and sphenoid sinuses, orbit and cranial fossae, with different degrees of associated symptoms, were identified. Techniques found to solve these clinical issues include Cadwell-Luc approach, transoral endoscopy approach via canine fossae and transnasal functional endoscopy surgery. Conclusion: Before removing the foreign body, a correct diagnosis should be done in order to evaluate the functional status of the ostiomeatal complex and the degree of affectation of paranasal sinuses and other involved structures, determining the size and the exact location of the foreign body. After a complete diagnosis, an indicated procedure for every case would be decided. Key words:Implant, oral surgery, foreign body, paranasal sinuses, displacement, migration.

Migration of Dental Implants Into Maxillary Sinus During the Healing Period Due to Wrong Indication: Report of 2 Cases

“…In literature, generally, bone level implants were used in reported cases of migrated dental implants into the maxillary sinus. 2,8 In this present case report, bone level dental implants were used similar to the literature. The management of the displaced dental implants into maxillary sinus is still on debate.…”

Foreign Bodies in the Maxillofacial Region: Assessment With Multidetector Computed Tomography

“…Delayed acquisition is needed to find any soft tissues alteration due to PFBs and also to identify, if present, hemorrhagic delayed phenomena related to microfissuration of arterial or venous wall, thus preventing the formation of pseudoaneurysm. [31][32][33] Iatrogenic FBs…”

Unusual Case of Osseointegrated Dental Implant Migration into Maxillary Sinus Removed 12 Years after Insertion

“…The posterior maxilla is one of the regions where complications are more likely to occur and its rehabilitation may be a demanding challenge for oral surgeons. This area is often characterized by low bone density and quality, fast alveolar ridge reabsorption, maxillary sinus pneumatization, which could lead to a lack of primary stability, and sinus perforation with displacement of dental implants [3]. Use of short implants usually allows implant placement with residual bone vertical height; however, at certain times, it may be necessary to perform sinus floor elevation.…”