Maxillofacial surgery deals with major surgery of jaw bone tumour, oral cancers, temporomandibular joint, congenital facial defects, jaw bone fracture etc. This branch of surgery has come up more recently with advanced surgical technique and bone grafting has become a regular job for maxillofacial surgeons in the reconstruction of acquired or congenital jaw defect. Various types of bone grafts, such as- xenogenic bone grafts, autogenic bone grafts, allogenic bone have been successfully transplanted time to time by some authors. However, the success of bone grafting is still a challenging issue in the maxillofacial surgery. Autogenous bone graft is the gold standard for reconstruction of mandibular defects.