CT upper and lower jaw


Noninvasive diagnostic techniques in modern society gained popularity due to their high information content and accessibility. They are effective in the study of lower and upper jaws with okolonosovykh the sinuses (maxillary, frontal and sphenoid sinuses). High-quality and informative procedure is a computed tomography (CT).

What is computed tomography?

This study is performed in order to visualize the structure of the upper and lower jaws in 3-D image to determine the exact species and location of abnormalities or their absence. For this purpose, computer tomography (CT) machine, which by means of x-ray radiation does transverse or horizontal sections, after which a computer processes the images and saves them to view a dentist, otolaryngologist or a plastic surgeon.

Special preparation before a CT scan of the upper, lower jaw and the sinuses is not required, which is a clear advantage of this method. Exception — a computed tomography with contrast. In this case, it is recommended to refrain from eating at least 4-6 hours before the procedure.

The procedure itself looks as follows: the patient lies on the couch, which is directly connected with the apparatus. He fixed his head, or asked not to move. When CT with contrast is injected special coloring substance before the test. Further, the scanner scans the selected area, making sounds similar to crackle, after the scanning is automatically disabled. The duration of studies depends on the method: if no contrast — no more than 20-30 seconds, with contrast 20 minutes — half an hour. Limitations: tomography, can withstand no more than a certain weight of the patient, specifically what depends on the model, the exact number to know the staff at the record of the proceeding.

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Contraindications for CT are: pregnancy, severe renal insufficiency, decompensated heart disease; imaging with contrast — Allergy to foods containing iodine (seaweed, seafood), as this element is contained in the contrast substance, threatening allergic reaction. There is no imaging no person under the age of 14 years.

Why do computed tomography?

There are many indications for CT of the maxilla and mandible. If a toothache, you feel discomfort in the region of the paranasal sinuses – diagnose, as this indicates the presence of a number of diseases such as:

  • benign and malignant tumors of the maxillary (maxillary) sinuses;
  • inflammatory diseases of the paranasal sinuses;
  • pathology of the facial nerve (lower jaw);
  • hidden tooth decay;
  • the changes in the structure of the lower and upper jaws;
  • injuries of the maxillofacial area;
  • tumors associated with this area (tumors, cysts);
  • fistula upper or lower jaw;
  • pathology of the salivary glands;
  • dental anomalies (incorrect height, configuration, location);
  • to control the operations, transactions.

Common diseases of these can be called cavities and sinusitis. Caries – a pathological process in the tooth, slow-evident lesion of the hard tissue under the influence of a number of negative factors (e.g., eating a lot of sweet). Sinusitis – inflammation of paranasal sinuses is a chronic or acute disease of a bacterial and/or viral etiology, characterized by pain in the maxillary sinuses, fever, runny nose. Complications are formed in the axils of benign tumors (cysts), and the transition of the inflammatory process in the frontal sinuses with the development of sinusitis, treatment is often carried out surgically.

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Than the CT method is better than others in the diagnosis of these diseases?

Computed tomography has several advantages. It is comfortable, it does not require special training (in addition to CT with contrast), gives a clear and informative three-dimensional model of a given area. Using computed tomography defines abnormalities of the maxillary region and the maxillary sinuses. In many cases, a CT scan of the jaw is the only method to get a complete snapshot of the jaw, which is convenient for diagnosis. Also imaging is very convenient for preoperative diagnosis, as it gives to understand what the anatomical features are available to the patient, which greatly facilitates the operation.

The disadvantages of this method include: high cost of research, contraindications to frequent conduct because of the negative effects of radiation (no more than once every 3-4 months), the inability to undertake a study on people with large dimensions due to restrictions on weight and size.

What are more techniques for studying the oral and maxillofacial region?

To study the upper and lower jaw often use x-rays and MRI diagnostics.

Radiography is a qualitative research method due to the high information content and low cost treatments. Is performed in three dimensions — direct, lateral and oblique, which allows full inspection and more informative in the diagnosis. Drawback is the high radiation dose.

MRI (magnetic resonance imaging) is an informative method for detection of diseases of the TMJ (maxillofacial) joint. This procedure is especially useful for detecting arthritis this area. Often used by doctors — otolaryngologists, dentists, oral and maxillofacial and plastic surgeons for more precise operations, as it allows to thoroughly examine the structural features of the organs of the maxillofacial region.

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It’s safe to say that CT is the optimal method for the diagnosis of diseases of the upper and lower jaws with okolonosovyh sinuses. However, do not forget about other methods of diagnosis, as they complement computed tomography, and in turn, help to improve the quality of diagnosis and plan the correct course of treatment.