The goal of Mandibular reconstruction is the restoration of form and function of the Mandibular apparatus. This needs reestablishing an acceptable appearance and Mandibular continuity, maintaining a pain-free Mandibular range of motion and relatively normal soft tissue relationships within the oral cavity to facilitate speech and swallowing, and providing a foundation on which to reconstruct the dentitionOromandibular reconstruction resulting from resection of benign tumour, malignant tumor, and osteomyelitis or osteoradionecrotic mandible remains a challenge for the surgeon today. Mandibular defects following ablative surgery for malignant tumours of the head and neck region impact both form and function and require a multidisciplinary approach to optimize functional and cosmetic outcomes. Comprehensive reconstructive strategies require the restoration of facial dimensions, including width, height, and projection. To achieve optimal functional and aesthetic results, reconstructive surgeons must be able to replace the skeletal buttresses, restore the external/internal soft tissue envelope, eliminate fistulas, and provide a foundation for dental rehabilitation. The geometric design of the inferior border of the mandible defines the aesthetic contour of the lower third of the face. This horizontal buttress or mandibular plane defines a soft tissue cephalometric parameter formed by a line that connects menton to gonion. Replacement of the dentoalveolar segment allows for ideal placement of endosteal implants and eventual rehabilitation with an implant-bone prosthesis at the level of the occlusal plane.