Dental Dental Radiology

Question 1

Which type of dental X-ray provides the most complete view of all teeth and surrounding bone in a single image?

Accepted Answer

Panoramic

Answer

A panoramic radiograph captures the entire dentition, jaws, TMJ, and surrounding structures in one image.

Question 2

What does the term 'radiolucent' mean when describing a finding on a dental X-ray?

Accepted Answer

Appears dark/black on the image

Answer

Radiolucent structures allow X-rays to pass through easily, producing dark areas on the radiograph, such as caries or abscesses.

Question 3

Which film placement technique produces the least distortion in periapical radiographs?

Accepted Answer

Paralleling technique

Answer

The paralleling technique places the film parallel to the long axis of the tooth and directs the X-ray beam perpendicular to both, minimizing distortion.

Question 4

What type of interproximal radiograph is most commonly used to detect proximal caries and crestal bone loss?

Accepted Answer

Bitewing

Answer

Bitewing radiographs show the crowns and interproximal areas of both arches simultaneously, making them ideal for detecting proximal decay and early bone loss.

Question 5

Which radiation protection device should a patient always wear during dental X-rays to protect reproductive and other radiosensitive organs?

Accepted Answer

Lead apron with thyroid collar

Answer

A lead apron with thyroid collar shields the patient's body and thyroid gland from scatter radiation during dental radiography.

Dental Practice Test

Dental Practice Test

Dental Dental Radiology