This is a special method for obtaining radiographs of the teeth- bearing jaws, both upper and lower. A specially constructed machine rotates around the jaw-bones, thus giving us an extremely good idea about the structure of the jaw-bones and are useful in a wide-variety of conditions including infections, tumors, congenital abnormalities, pre-implant evaluation and trauma. Cephalogram is an x-ray of the face, obtained so that accurate measurements of the face can be performed.