The average healing time for a broken jaw is six weeks. If the fractured segments of the jaw are properly aligned and undisturbed during healing, the jaw should heal and be as strong as in was before the fracture occurred.he pain will be a pulsating throb with occasional sharp pangs. A broken jaw is also likely if your jaw sticks out farther than normal or is indented. There will be swelling on the side of the face where the jaw is broken.