Panoramic X-rays (also known as Panorex® or orthopantomograms) are wraparound photographs of the face and teeth. They offer a view that would otherwise be invisible to the naked eye. X-rays in general, expose hidden structures, such as wisdom teeth, reveal preliminary signs of cavities, and also show fractures and bone loss.
Panoramic X-rays are extraoral and simple to perform. Usually, dental X-rays involve the film being placed inside the mouth, but panoramic film is hidden inside a mechanism that rotates around the outside of the head.
Unlike bitewing X-rays that need to be taken every few years, panoramic X-rays are generally only taken on an as-needed basis. A panoramic x-ray is not conducted to give a detailed view of each tooth, but rather to provide a better view of the sinus areas, nasal areas and mandibular nerve. Panoramic X-rays are preferable to bitewing X-rays when a patient is in extreme pain, and when a sinus problem is suspected to have caused dental problems.
Panoramic X-rays are extremely versatile in dentistry, and are used to:
- Assess patients with an extreme gag reflex.
- Evaluate the progression of TMJ.
- Expose cysts and abnormalities.
- Expose impacted teeth.
- Expose jawbone fractures.
- Plan treatment (full and partial dentures, braces and implants).
- Reveal gum disease and cavities.