الفهرس 
Acknowledgment:Only 14 pages are availabe for public view
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Abstract
The aim of this study was to evaluate the clinical effectiveness of using two different reamers for the lateral approach sinus floor augmentation, by assessing:
1- Tear of sinus membrane using periodontal probe measured in mm.
2- Amount of bone gain after augmentation of the sinus floor using cone beam volumetric tomograph