Evaluation of Autogenous Demineralized Dentin Graft for Ridge Preservation With and Without Injectable Platelet Rich Fibrin

after atraumatic extraction, collection of whole venous blood (9 ml) in sterile vacutainer tubes will be done without anticoagulant added, vacutainer tubes will be then placed in a centrifugal machine at 700 revolutions per minute (rpm) for 3 min with a tube filled with water to maintain the balance during the centrifuging process. ADDG particles prepared by demineralization of tooth particles in 0.6N hydrochloric acid for 30 min to achieve demineralization then washed twice in saline and dried with sterile gauze. Graft particles will be loaded at the defect site to restore ridge form, large metal condenser was used to adapt the graft to the defect and stabilizing the graft with sutures.