Regeneration of hard and soft tissue is mediated by a wide range of intra and extracellular events that are controlled by signaling molecules. In the past fewyears, the use of autologous platelet concentrates (PCs) has gained great popularity in a variety of fields such as dentistry, oral surgery, orthopedics, sports medicine, dermatology, ophthalmology, cosmetic and plastic surgery. Platelet concentrate preparations are now considered a life tissue with plenty of elements that could enhance regeneration. Owing to its easy ways of preparations and its low cost it is now a booming area of research and clinical applications. This book provide a simple explanation for different ways of its preparations and biological background behind each type.