Dental implant migration in grafted maxillary sinus
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Published on: October 18, 2021
Pablo Galindo-Moreno1, Miguel Padial-Molina, Elena Sánchez-Fernández
1Department of Oral Surgery and Implant Dentistry, School of Dentistry, University of Granada, Granada, Spain. pgalindo@ugr.es
Background:
Migration of oral implants through a previously consolidated graft is an extremely rare event. We reported 2 cases of migration at least 6 months postimplantation in sinus grafted in 2 stages, consequently over 6-month graft maturation period.
Case Description:
Sinus elevations and implants placement in 2 patients were performed. Clinical and radiographic follow-up after the prosthetic rehabilitation showed displacement of 1 implant in each patient through the histopathologically verified stable grafts.
Clinical Implications:
Implants migration through composite graft after maxillary sinus elevation was reported. Reasons for this to occur might be due to the following: fail to achieve implant primary stability, Schneiderian membrane perforation, or graft resorption due to increased osteoclastic activity.