An orthopantomogram (OPG) is a common radiograph used to identify the hard tissues of the oral cavity and surrounding skeletal structures. It is an extra-oral radiograph that approximates the focal trough of the mandible
An OPG is an X-ray of the lower face. Like all X-rays, it involves using short blasts of low-level radiation to create images of inside the body – in this case, of the bones and teeth..
