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Oral Diagnosis & Dental X Rays

Periapical X-ray Case

DENTAL X RAYS
Dental X-rays are pictures of the teeth, bones, and soft tissues around them to help find problems with the teeth, mouth, and jaw. X-ray pictures can show cavities, hidden dental structures (such as wisdom teeth), and bone loss that cannot be seen during a visual examination. Dental X-rays may also be done as follow-up after dental treatments.

The following types of dental X-rays are commonly used. The X-rays use small amounts of radiation.

 Bitewing X-rays show the upper and lower back teeth and how the teeth touch each other in a single view. These X-rays are used to check for decay between the teeth and to show how well the upper and lower teeth line up. They also show bone loss when severe gum disease or a dental infection is present.
 Periapical X-rays show the entire tooth, from the exposed crown to the end of the root and the bones that support the tooth. These X-rays are used to find dental problems below the gum line or in the jaw, such as impacted teeth, abscesses, cysts, tumors, and bone changes linked to some diseases.
 Occlusal X-rays show the roof or floor of the mouth and are used to find extra teeth, teeth that have not yet broken through the gums, jaw fractures, a cleft in the roof of the mouth (cleft palate), cysts, abscesses, or growths. Occlusal X-rays may also be used to find a foreign object.
 Panoramic X-rays show a broad view of the jaws, teeth, sinuses, nasal area, and temporomandibular (jaw) joints. These X-rays do not find cavities. These X-rays do show problems such as impacted teeth, bone abnormalities, cysts, solid growths (tumors), infections, and fractures.
• Digital X-ray is a new method being used in some dental offices. A small sensor unit sends pictures to a computer to be recorded and saved.
• Cephalometric X-ray: This side view of the head, used most commonly for orthodontic determinations of treatment. The soft tissues of the face are specially enhanced so as to be able to determine the changes to profile that orthodontic therapy will alter.

Panoramic X-ray Case

A full-mouth series of periapical X-rays (about 14 to 21 X-ray films) are most often done during a person's first visit to the dentist. Bitewing X-rays are used during checkups to look for tooth decay. Panoramic X-rays may be used occasionally. Dental X-rays are scheduled when you need them based on your age, risk for disease, and signs of disease.

Why It Is Done
Dental X-rays are done to:
• Find problems in the mouth such as tooth decay, damage to the bones supporting the teeth, and dental injuries (such as broken tooth roots). Dental X-rays are often done to find these problems early, before any symptoms are present.
• Find teeth that are not in the right place or do not break through the gum properly. Teeth that are too crowded to break through the gums are called impacted.
• Find cysts, solid growths (tumors), or abscesses.
• Check for the location of permanent teeth growing in the jaw in children who still have their primary (or baby) teeth.
• Plan treatment for large or extensive cavities, root canal surgery, placement of dental implants, and difficult tooth removals.
• Plan treatment of teeth that are not lined up straight (orthodontic treatment).

Without X-rays, dentists may miss the early stages of decay between teeth. Dental X-rays are pictures of the teeth, bones, and soft tissues around them to help find problems with the teeth, mouth, and jaw. Your dentist can talk to you about your X-rays right after they are done.