DENTAL MCQ

General oral radiology Knowledge Quiz

1) The area from which x-rays emanate is called the:

a) Target.
b) Focal spot.
c) Intensifying screen.
d) Cone.

2) After processing a film, you notice that it appears brown in color. What is the most likely cause of this?

a) Fixing time was not long enough.
b) Solutions are too strong.
c) Solutions are too weak.
d) Film was under-developed.

3) It is recommended that the operator stand at least how many feet away from the patient when taking radiographs?

a) Two feet.
b) Four feet.
c) Six feet.
d) Eight feet.

4) All of the following are radioresistant cells except:

a) Muscle.
b) Nerve.
c) Mature bone.
d) Lymphocytes.

5) Increasing the kilovoltage (kvp) causes the resultant x-ray to have:

a) Decreased density.
b) More latitude.
c) A shorter scale of contrast.
d) A longer scale of contrast.

6) Image magnification may be minimized by:

a) Using short cone.
b) Placing the film as far from the tooth as possible.
c) Using long cone.
d) Shortening the exposure time.

7) Shortening and elongation are produced by:

a) Incorrect horizontal angulation.
b) Incorrect vertical angulation.
c) Either of the above.
d) Non of the above.

8) Which of the following types of intra-oral radiographs are most useful in detecting interproximal caries?

a) Periapical radiographs.
b) Bitewing radiographs.
c) Occlusal radiograph.
d) Non of the above.

9) Osteoradionecrosis is more common:

a) In the mandible.
b) In the maxilla.
c) All of the above.
d) Non of the above.

10) In this intra-oral radiograph the region labeled with A is:

a) The nasal septum.
b) Nasal fossa.
c) The nasal conchae in the nasal fossa.
d) Non of the above.

free count