Introduction: Platelet-rich plasma (PRP) is an autologous product with a native
content of fibrinogen and a high concentration of platelets (5–10 times higher than
whole blood) Platelets contain growth factors that can trigger cell reproduction and
stimulate tissue regeneration or healing. So, we used PRP around implants to accelerate
healing and enhance bone formation quality. Aim: This clinical study aimed to assess
sinus tenting of simultaneous dental implants with and without PRP for maxillary sinus
lift without bone grafting. Methods: This clinical, trial was carried out on ten patients
required bilateral sinus lifts in upper posterior region. Implants inserted simultaneously
with the sinus lift procedure without grafting. Bilateral sinus tenting was performed for
each patient, then the patients were grouped as: Group I (patients' one side as a study
group): obtained a solid PRP was administered above and around the implant. Group < br />B (patients' other side as a control group): left without loading solid PRP. The secondstage
surgery had been conducted to expose the implant fixture & for prosthetic phase
completion after 6 months. Assessments were done clinically by Visual analog scale for
pain, measurement of edema, implant stability assessment by Osstel (ISQ), surgery time
factor and postoperative complication; and radiographically to assess the bone density,
vertical bone gain after six months and crestal bone changes. Results: No significant
difference existed between two groups in pain, edema scores, implant stability, bone
density and vertical bone gain at T0, no significance differences between two groups
were found in bone density, vertical and crestal bone changes at T6. Significance
differences between both groups existed with better results in study groups in pain and
edema at T1 and T2 and higher values of implant stability in study group at T6. Surgical
time was longer in study group. Tenderness and nasal obstruction were lesser in study
group and no nasal bleeding in both groups. Conclusions: Application of solid PRP in
sinus tenting procedure of simultaneous dental implants for maxillary sinus lift without
bone grafting can improve pain, edema scores and implant stability.