Bone grafts have been employed for repair for more than a hundred years. It is a dynamic process and is extensively used in reconstructive surgery. During the last twenty years it has undergone numerous advances. Bone, which has been lost as a result of resection, resorption or sequesterization, will not repair by normal process of healing. So they are to be replaced by means of alloplast, bone grafts or its substitutes, bone transport. For a successful regeneration, bone graft when applied should heal, become incorporated, revascularise and eventually assume the desired form. Autogenous bone graft harvesting is a means for restoration of jaw continuity that supports function via supporting prostheses and / or osseointegrated fixtures as well as standing up to functional loading over time.Through a better understanding of the biology of bone healing, bone regeneration and bone remodeling in combination with grafting procedures it is possible to have predictable successful reconstructive results.