what do periapical x rays show?
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Periapical X-rays show the whole tooth — from the crown, to beyond the root where the tooth attaches into the jaw. Each periapical X-ray shows all teeth in one portion of either the upper or lower jaw. Periapical X-rays detect any unusual changes in the root and surrounding bone structures.
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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 palate, cysts, abscesses or growths.
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Symptom: Constant and severe pain and pressure, swelling of gum and sensitivity to touch. Possible problem: A tooth may be abscessed, causing an infection in the surrounding tissue and bone. What to do: See your endodontist for evaluation and treatment to relieve the pain and save the tooth.
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All X-rays can be harmful, though the radiation dose of bitewings is relatively low. Of all the medical radiation patients receive, dental X-rays account for less than 3 percent. But the harm from radiation is cumulative. Every X-ray adds to the risk of damage that can lead to cancer.
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The machine sends a beam of radiation through your body. Your hard, dense bones block that beam, so they show up as white on the film below you. The radiation also goes through softer tissue like muscle and fat, which appear in shades of gray in the X-ray. The air in your lungs will look black in the image.
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An X-ray can provide details of the bones in the spine, but not the nerves and discs. However, an X-ray can tell a doctor how much narrowing has occurred between the vertebrae and whether bone spurs have developed. An MRI is often more helpful at diagnosing a pinched nerve.
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The frequency of getting X-rays of your teeth often depends on your medical and dental history and current condition. Some people may need X-rays as often as every six months; others with no recent dental or gum disease and who visit their dentist regularly may get X-rays only every couple of years.
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Cavities between teeth are rarely seen without X-rays unless they are very large or when teeth break. The following pictures are the same teeth in the X-rays above: Once cavities are exposed, it is not surprising that they are always larger than they look in X-rays.
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Prescribing of Dental X-rays The HARP Act requires that dental x-rays be prescribed by a dentist before they can be taken. A clinical rationale for taking the x-ray or x-rays, therefore, must first be determined by the dentist.
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Pulp stones generally do not have significant clinical implications as they are usually not a source of pain, discomfort or any form of pulpitis. However, when the tooth concerned will undergo endodontic treatment such as root canal treatment, presence of large pulp stones will be clinically significant.
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When decay under a crown is small, it is often difficult to detect. On a radiograph (x ray), the x ray beam would have to be placed at precisely the right angle to see the decay.
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An X-ray of the aching tooth can help identify an abscess. Your dentist may also use X-rays to determine whether the infection has spread, causing abscesses in other areas.
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A periapical tooth abscess usually occurs as a result of an untreated dental cavity, an injury or prior dental work. Dentists will treat a tooth abscess by draining it and getting rid of the infection. They may be able to save your tooth with a root canal treatment, but in some cases the tooth may need to be pulled.
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Not all types of teeth pain are indications for a root canal. But signs of infection severe enough to require a root canal include: Serious teeth pain when eating or when you put pressure on the area. Teeth pain and sensitivity to hot or cold that lingers after the hot or cold stimuli have been removed.
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X-rays are taken to get images of the internal structures such as organs, tissues or bones. They are very useful in the diagnosis of bone fractures, inflammations, internal bleeding, infections or even tumours.
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X-rays use beams of energy that pass through body tissues onto a special film and make a picture. They show pictures of your internal tissues, bones, and organs. Bone and metal show up as white on X-rays. X-rays of the belly may be done to check the area for causes of abdominal pain.
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There are two main types of dental X-rays: intraoral (the X-ray film is inside the mouth) and extraoral (the X-ray film is outside the mouth). Intraoral X-rays are the most common type of X-ray.