MJDF Dental Radiology and Imaging 2

Question 1

Which type of radiograph provides the best view of the periapical region and surrounding alveolar bone?

Accepted Answer

Periapical radiograph

Answer

Bitewing radiograph

Answer

Panoramic (OPG) radiograph

Answer

Occlusal radiograph

Question 2

A bitewing radiograph is MOST useful for detecting which of the following?

Accepted Answer

Interproximal caries and alveolar crest bone levels

Answer

Periapical abscesses

Answer

Root resorption

Answer

Sinus pathology

Question 3

The radiation protection principle 'ALARP' stands for:

Accepted Answer

As Low As Reasonably Practicable

Answer

All Lateral Anterior Radiation Protocol

Answer

Absorbed Linear Attenuation Radiation Principle

Answer

Alignment of Lead Apron and Rectangular Positioning

Question 4

On a periapical radiograph, which structure appears as a radiolucent crescent-shaped area around the apex of a non-vital tooth?

Accepted Answer

Periapical granuloma

Answer

Condensing osteitis

Answer

Cementoma

Answer

Hypercementosis

Question 5

Which of the following best describes the appearance of enamel on a radiograph?

Accepted Answer

Radiopaque — appears very bright/white as enamel has the highest mineral content of any body tissue

Answer

Radiolucent — appears dark as enamel is less dense than dentine

Answer

Uniformly grey — same density as dentine but thicker

Answer

Radiolucent at the surface with a radiopaque core

Question 6

A panoramic radiograph (OPG) is MOST appropriate for:

Accepted Answer

Overview assessment of all teeth, jaws, and TMJ in a single image

Answer

Detecting early interproximal caries in posterior teeth

Answer

Accurate measurement of individual tooth root lengths

Answer

Detecting hairline root fractures