A Comparative Study between the Effects of Platelet-Rich Plasma& Effect of Blood Clot Mixed with Hydroxyapatite in Elevating Maxillary Sinus

Sinus augmentation is a common approach for patients with severe alveolar ridge atrophy. Purpose of study: The objective was to compare the hydroxyapatite + PRP with hydroxyapatite + Blood Clot in maxillary sinus grafts.