Utilization of collagen vs PRF membrane over the graft following sinus lift procedure and before suturing

Assessment of the effect of membrane overlying bone marrow aspirate concentrate - bovine graft mixture in sinus lift procedure

Inclusion Criteria:

• Patients who has as deficient as 4 mm vertical bone height in posterior maxilla that need bone augmentation before delayed implant placement.
• Highly motivated patients
• Age more than 18 years

Exclusion Criteria:

• Patients suffering from any systemic disease or those under any medication that may interfere with normal bone healing.
• Patients suffering from any sinus pathosis.
• Patients with conditions that could potentially compromise Bone Marrow ( BM)quality, including history of hematologic malignancy, current chemotherapy, BM suppressive and anti-platelet medications, previous BM Aspiration, or acute illness.
• Heavy smoker (> 20 cigarettes daily)