الفهرس 
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Abstract
The present study was carried out in the Department of Surgery, Anesthesiology and Radiology, Faculty of Veterinary Medicine, Zagazig University. It was divided into two parts; (Part I) was a clinical survey of dental affections. (Part II) was an experimental study that was conducted on dogs. This part was Performed to evaluate and compare the osteogenic regenerative ability of Platelet-Rich Fibrin (PRF), Platelet-Rich Plasma (PRP) and Nano hydroxyapatite (NHA) particles on the empty alveolar cavity after open surgical dental extraction of upper canine teeth.