The method of computed tomography ( CT) scan of the jaw and teeth


1. When appointed?

2. Contraindications

3. How to prepare?

CT jaw and teeth - it is non-invasive and quite informative diagnostic method that is used in maxillofacial surgery and dentistry.Computed tomography allows not only time to diagnose cysts, tumors, inflammatory diseases, fractures, fistulae, but also to monitor the results of an implant.In addition, CT can provide information about the width and height of the upper and lower jaw, as well as the location of the mandibular canal and maxillary sinus condition.

CT jaw and teeth performed in the supine position on a movable couch, which is connected to the scanner.If necessary, the contrast imaging radiologist introduces examinee intravenously special staining solution based on iodine or barium.For pictures couch slides into a tunnel apparatus, and the procedure for scanning begins.After completing studies scanner is automatically switched off.On the basis of the series of slices builds a three-dimensional computer image.

In general diagnosis lasts less than 15 minutes.

When he appointed?

Computed tomography of the teeth and jaws is performed for the following indications:

  • Suspicion for the presence of hidden caries.
  • Diagnostics facial skull abnormalities.
  • Morphological changes in the joints of the lower jaw (dystopia, dislocation of the head, arthrosis).
  • Getting information to carry out facial operations.
  • Preparing for implantation and control afterwards.
  • Diagnosis of injuries of the lower and upper jaw and teeth.
  • diagnosis of developmental abnormalities of the jaws and teeth (the presence of cleft palate, teeth dystopia, retention).
  • Check the status of the paranasal sinuses located in the upper jaw (cysts, inflammation, foreign bodies, polyps, etc.).
  • Neoplasms dentoalveolar apparatus (malignant and benign).
  • Diagnostics presence of fistulas, additional root canals, diseases of the salivary glands.
  • Quality control of sealing root canals.


Computed tomography of the teeth, upper and lower jaw is contraindicated in women throughout the period of pregnancy in order to prevent the negative effects of radiation on the developing fetus.Also, CT is not indicated for multiple previous radiographic diagnosis and patients with severe general condition.

If necessary, the contrast imaging (for the study of the blood supply to the teeth and the jaw apparatus), the patient should report the presence of allergy to contrast agents used, as well as diabetes, renal failure.Woman lactation should also notify your doctor.

How to prepare?

If CT of the jaw and teeth is performed without contrast, specific training is required.The only thing that needs to be done - to exclude the presence of metal objects and jewelry on the body and clothing, as well as remove the orthodontic and orthopedic devices, if any.This is to ensure that they do not interfere with the imager and complicated computer processing of images.

Sometimes, at the discretion of the expert shall require the prior rehabilitation of the oral cavity (caries treatment, removal of dental plaque and tooth roots that are not suitable for prosthetics).Before the procedure, the patient wears a special lead apron that serves as protection from the negative effects of X-rays.

On the day appointed research is advisable to take:

  • direction of a physician;
  • pictures and description of the results of CT and other studies conducted earlier.

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