Dentists must be knowledgeable about imaging techniques in order to interpret all normal anatomical structures in the teeth and jawbone, and radiographs that can be seen on intraoral, panoramic and other extraoral radiographs. In addition, the dentist must be able to distinguish deviations in radiographic form and density from normal structures. Therefore, in order to obtain quality radiographic images, panoramic radiography technique must be known in detail, from positioning technique to irradiation factors.

Panoramic imaging provides a better image with a lower dose than a full mouth series, which usually consists of 14 or more periapical projections. Panoramic images are of some value in the diagnosis of periodontal disease, especially in the most advanced cases. However, panoramic projections should only be used when intraoral projections cannot be obtained, because panoramic images do not have the detail and definition required to evaluate periodontal disease, especially in the early stages of the disease.