الفهرس 
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Abstract
To compare clinically and radiographically the effect of leukocytes and platelets-rich fibrin (L-PRF) on the stability and crestal bone resorption of immediately placed and early loaded implants. Twenty implants (Screw-plant, Spectra system, USA) were placed in the maxillary anterior and premolar regions of 10 patients. In a split-mouth design, each patient received two implants, one implant was placed with L-PRF plug (test) and the other implant (control) was placed without L-PRF plug in fresh extraction sockets