What are extra oral radiographs?

What are extra oral radiographs?

What are Extraoral Radiographs? Like the first part of the name suggests, extraoral X-rays are made with the film outside the mouth. This type of X-ray still shows the teeth but can also provide important information about the jaw and skull.

What is an example of an extra oral radiograph?

Typical extraoral x-ray images include panoramic, cephalometric and cone beam computed tomography (CBCT) projections. A lateral cephalograph is a sagittal projection of the skull that includes both the hard and soft tissues.

What can dental radiographs detect?

What types of problems do X-rays help detect?

• Decay, especially small areas of decay between teeth.
• Decay beneath existing fillings.
• Bone loss in the jaw.
• Changes in the bone or root canal due to infection.
• Condition and position of teeth to help prepare for tooth implants, braces, dentures or other dental procedures.

What extraoral radiograph is used to best see the maxillary sinus?

Bregma–menton view. This projection is primarily used to demonstrate the walls of the maxillary sinus (especially in the posterior areas), the orbits, the zygomatic arches and the nasal septum.

What do occlusal radiographs show?

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. Occlusal X-rays may also be used to find a foreign object.

What is the difference between intra oral and extra oral radiographs?

There are two main types of dental X-rays: intraoral (meaning the X-ray film is inside the mouth) and extraoral (meaning the X-ray film is outside the mouth). Intraoral X-rays are the most common type of dental X-ray taken. Extraoral X-rays show teeth, but their main focus is the jaw and skull.

What are the three types of dental images?

There are three types of diagnostic radiographs taken in today’s dental offices — periapical (also known as intraoral or wall-mounted), panoramic, and cephalometric. Periapical radiographs are probably the most familiar, with images of a few teeth at a time captured on small film cards inserted in the mouth.

How do you read a dental radiograph?

The blue arrows are pointing to the healthy enamel. The red arrows are pointing to the pulp, where the nerve and blood vessels are located for a tooth. The dentin layer is between the enamel and the pulp. The purple arrows are pointing to areas of decay, which show up as a dark spot on x-rays.

What technique is best for viewing maxillary sinuses?

CT is the most reliable imaging technique for determining if the sinuses are obstructed. It is the best imaging modality for sinusitis.

What appears most radiolucent on a dental radiograph?

Air space (arrow) appears radiolucent, or dark, because the dental x-rays pass through freely. Dense structures such a enamel (1), dentin(2), and bone (3), resist the passage of x-rays and appear radiopaque, or white.

When are occlusal radiographs indicated?

Periapical/occlusal radiographs are indicated for identifying or confirming pathology, evaluating dental development, dento-alveolar trauma, deep carious lesions, periapical pathology and oral involvement of systemic disease.

What kind of radiography is used for maxillary sinus?

Radiography of the maxillary sinuses is often undertaken using computed tomography, magnetic resonance imaging, or the occipito-mental plain x-ray film projection. However the panoramic radiograph has been found superior to the latter for detection of ficyst-like densities.fl.

When to use extraoral radiography outside the mouth?

INTRODUCTION-INTRODUCTION-• Extraoral radiographs (outside the mouth) aretaken when large areas of the skull or jaw mustbe examined or when patients are unable to opentheir mouths for film placement.• Extraoral radiographs do not show the details aswell as intraoral films.•

Which is the primary indication of maxillary sinus disease?

For this reason, the panoramic radiograph can be the primary indication of maxillary sinus disease. While panoramic radiography can be used to detect maxillary sinus disease, it cannot be used to entirely exclude sinus pathology. Only the portions of the sinus that are within the image layer will be demonstrated.

Are there any malignancies in the maxillary sinus?

Primary malignancies affecting the maxillary sinus include squamous-cell carcinoma, adenoid cystic carcinoma and adenocarcinoma [7]. The maxillary sinus may also be affected secondarily by extension malignancies of the oral soft tissues or jaw, and also, although rare, is the site of metastases from distant sites [8].