الفهرس 
Evaluation of implant stability after sinus floor elevation in posterior upper edentulous area using titanium mesh with simultaneous implant placement : A preliminary study
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Abstract
The current study was conducted on 12 maxillary sinuses, The purpose of present study was directed onto evaluating the stability of the implants placed simultaneously after graft-less sinus floor elevation using titanium mesh and assess the validity of this one-stage graftless sinus lift with immediate implant insertion technique. The study group comprised 12 patients in whom a total of 17 implants are inserted simultaneously in 12 sinuses. Only blood clots occurring from bleeding due to the surgical procedure filled the secluded compartment space beneath the lifted sinus membrane, where the stable titanium mesh allowing for stable blood clot formation. The patients were clinically and radiographically evaluated preoperatively, immediate and six months postoperatively using multislice CT (MSCT), the clinical evaluation included assessment of any complications during surgery, implant stability monitoring and postoperative healing. Radiographic evaluation involved MSCT radiographs taken for every patient to evaluate the density and changes that occurred in the bone. Evaluation the implant stability was performed using the resonance frequency analysis by the Osstell device. RFA readings was measured immediately after placement implants and after 6 months at the stage of implant loading. All implants achieved primary stability even in a thin residual bone height except one implant shown insufficient primary Implant stability (less than 60 ISQ), six months at the stage of prosthesis fabrication, its secondary stability was inadequate to receive the final restoration and postponed for more and longer follow up (later on, this failed implant was lost and replaced and still in healing period)