Panoramic X-ray views the whole mouth. Panoramic X-ray is preferred by dentists on first examination. They are helpful on detection of cysts, tumors, embedded teeth and decays. It is a 2D film. In some situations after panoramix x-ray, dental tomography which provides a 3D view and more detailed information can be used. Dental tomography can be used to gather information on bone density, width and mandibular nerves in the area where dental implant is considered.
Nowadays, dental x-rays are commonly used digitally. They get faster results and detailed view with less exposure to radiation.