Transcrestal Sinus Lift Using Osseodensification Versus Lateral Window Technique

Patients will be prepared for surgery with local anesthesia and thorough oral cavity disinfection. A full thickness crestal incision will be made slightly towards the palate to enhance the possibility of achieving primary wound closure. A conservative flap will be raised, extending slightly beyond the alveolar crest, to minimize flap-related issues. After preparing the osteotomy site using Densah burs and elevating the sinus to the desired height, the implant will be inserted into the osteotomy site.

A crestal incision with an anterior vertical releasing incision exposes the sinus's lateral wall. A mucoperiosteal flap is carefully reflected, revealing the sinus. A bony window is created using a Piezoelectric device, and after elevation, the sinus floor is carefully lifted with various curettes. Implant osteotomies follow standard placement protocol, with precautions against sinus membrane perforation. Nanobone is used as graft material, mixed with saline and gently packed into the sinus. A resorbable membrane is placed on the window's outer surface, secured with circumferential resorbable sutures, and the flap is sutured for closure.