The mandible, lower jaw or jawbone is the biggest, most grounded and least bone in the human face. It structures the lower jaw and holds the lower teeth set up. The mandible sits underneath the maxilla. It is the main versatile bone of the skull. The bone is shaped in the embryo from a combination of the left and right mandibular prominences, and where these sides join, the mandibular symphysis, is as yet noticeable as a black out edge in the midline. Like different symphyses in the body, this is a midline enunciation where the bones are joined by fibrocartilage, yet this explanation intertwines in youth.