Lateral Window Maxillary Sinus Elevation With Simultaneous Implant Placement: A Step-by-Step Surgical Technique.

Maxillary sinus pneumatization following tooth loss can result in reduced vertical bone height in the posterior maxilla, limiting the available bone for dental implant placement. The lateral window sinus elevation technique allows access to the sinus cavity and elevation of the Schneiderian membrane to facilitate bone augmentation. This technical report presents a step-by-step surgical technique for lateral window maxillary sinus elevation with bone grafting, membrane placement, and simultaneous implant placement. The procedure includes surgical access through a lateral bony window, elevation of the sinus membrane, placement of particulate bone graft material within the subantral space, insertion of a dental implant achieving primary stability, coverage with a resorbable barrier membrane, and tension-free primary closure of the surgical site. This report focuses on intraoperative surgical steps, providing a structured description of the technique for clinicians performing sinus augmentation procedures in the posterior maxilla.