Retrieval of displaced implants inside the maxillary sinus: two case reports and a short review.

Objective: The aims of this paper are to demonstrate two cases of implant migration into the maxillary sinus and to give a short review of the literature on this subject.

Clinical Procedure: Two patients were diagnosed with implant migration into the maxillary sinus. After thorough radiographic examination which revealed the exact position of the implants inside the maxillary sinus, removal was performed through a bony window in the anterior-lateral aspect of the maxillary sinus for both cases.