DENTAL X-RAY

Dental x-rays are a type of picture of the teeth and mouth. X-rays are a form of electromagnetic radiation, just like visible light. They are of higher energy, however, and can penetrate the body to form an image on film.

Structures that are dense (such as silver fillings or metal restoration) will block most of the photons and will appear white on developed film. Structures containing air will be black on film, and teeth, tissue, and fluid will appear as shades of gray.
Why do we need to x-ray your teeth?
The x-rays would show  a normal number, structure, and position of the teeth and jaw bones. For normal teeth, there are no cavities or other problems. Dental x-rays are also useful to identify the following:
  • The number, size, and position of teeth
  • Unemerged or impacted teeth
  • The presence and extent of dental caries (cavities)
  • Bone damage (such as from periodontitis)
  • Abscessed teeth
  • Fractured jaw
  • Malocclusion of teeth
  • Other abnormalities of the teeth and jaw bones

How the Test is Performed
The test is performed in the dentist's office. There are many types of dental x-rays. Some are:
  • Bitewing
  • Periapical
  • Palatal (also called occlusal)
  • Panoramic
The bitewing is when the patient bites on a paper tab and shows the crown portions of the top and bottom teeth together.

The periapical shows one or two complete teeth from crown to root.

A palatal or occlusal x-ray captures all the upper and lower teeth in one shot while the film rests on the biting surface of the teeth.

A panoramic x-ray requires a special machine that rotates around the head. The x-ray captures the entire jaws and teeth in one shot. It is used to plan treatment for dental implants, check for impacted wisdom teeth, and detect jaw problems. A panoramic x-ray is not good for detecting cavities, unless the decay is very advanced and deep.

How to Prepare for the Test
There is no special preparation. You just have to notify the dentist if you are pregnant.

How the Test Will Feel
The x-ray itself causes no discomfort. Some people find that biting on the piece of film makes them gag. Slow, deep breathing through the nose usually relieves this feeling.

Contact us for more information about Dental X-rays.

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