Dental Imaging Instrumentation

In radiographic image, teeth appear as white or lighter image.

• True

• False

Dental caries, tooth decay, infections and bone density changes appear darker in the radiographic images because _______________ reach image receptor.

• less radiation

• more radiation

Intra-oral x-rays can show detail of the teeth.

• True

• False

In extra-oral x-rays, film is positioned INSIDE the mouth.

• True

• False

Main focus of extra oral x-rays are the jaw and skull.

• True

• False

Cephalostat is an example of intra-oral method.

• True

• False

Intra-oral unit consists of the following components:

•  Tube head, Support arm, Control panel, Cone

•  Tube head, Support arm, Control panel, Forehead Support

• Tube head, Support arm, Control panel, Mouth bite

Intra-oral tube head is mounted on a device and allows rotation in three planes.

• True

• False

Intra-oral tube is fitted with a cone for collimation and centring the x-ray beam and focal distance.

• True

• False

The type of extra-oral examination is __________ x-rays.

• bite-wing

• periapical

• occlusal

• panoramic