Aim : The aim of present study was to evaluate BMAC/bovine graft utilization in Sinus membrane augmentation on bone quality and quantity. Methodology: sixteen patients suffering from atrophic posterior maxilla with sinus pneumatization were randomly divided into two equal groups: study group: the sinus membrane was elevated with BMAC/bovine graft whereas the control group recieved bovine graft only for sinus floor augmentation.

All patients will be evaluated at 1 week, 4 months to measure bone height and bone core biopsy for histological assessment at 4 months during implant placement.

Aim : The aim of present study was to evaluate BMAC/bovine graft utilization in Sinus membrane augmentation on bone height gain and quality of bone on histological assessment.

Methodology: sixteen patients suffering from atrophic posterior maxilla with sinus pneumatization were randomly divided into two equal groups: study group: the sinus membrane was elevated with bone marrow aspirate concentrate loaded on bovine graft whereas the control group recieved bovine graft only for sinus floor augmentation.

All patients will be evaluated at 1 week, 4 months by CBCT to measure bone height and bone core biopsy for histological assessment at 4 months during implant placement.

Inclusion Criteria:

• Patients with missing upper posterior teeth and atrophic posterior maxilla with a residual bone height ranging from 4 to 6 mm
• 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

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 BM quality, previous BMA, or acute illness.
• Heavy smoker (> 20 cigarettes daily)