BDA Radiography Exam Questions and
Correct Answers
Question 1
What should not be contained in the practices 'written procedures'?
Correct Answer
Details required for the identification of cleaning staff. The written procedures
should only contain processes and items related to dental radiography.
Question 2
what sense is used to detect xrays?
Correct Answer
Xrays cannot be detected by any human sense
Question 3
How should the image receptor be aligned for a paralleling technique periapical
radiograph?
Correct Answer
Parallel to the tooth
Question 4
Which age group has the highest risk of developing somatic stochastic effects (such
as cancer) following a dental radiograph?
Correct Answer
0-10 yr olds
Page 1 of 15
, Question 5
On a dental panoramic radiograph, how do objects inside the horseshoe-shaped focal
trough appear?
Correct Answer
They are slightly magnified. This is due to the fact that the sensor is quite far away
from the patients face. The radiographic image "spreads out" a little as it passes
across this gap, so the image grows a little by the time it hits the sensor.
Question 6
What is not a main area to be addressed by a quality assurance programme?
Correct Answer
Patient complaint procedure
Question 7
Which effects of X-rays principally concern the dental profession?
Correct Answer
Somatic stochastic effects, we are mostly concerned about the chances of causing
damage to normal body cells.
Question 8
what is an advantage of using the paralleling technique when taking a periapical?
Correct Answer
The angulation of the tubehead is easily determined, When using the paralleling
technique, the image receptor holder/beam aiming device helps you line up the
tubehead correctly , so the X-ray beam hits the tooth and film/sensor at 90o.
Question 9
What do we normally mean when we say "dose" in relation to medical and dental
radiation exposures?
Correct Answer
Effective dose, effective doses accounts for the type of radiation used and the type
of body tissue being exposed.
Page 2 of 15
Correct Answers
Question 1
What should not be contained in the practices 'written procedures'?
Correct Answer
Details required for the identification of cleaning staff. The written procedures
should only contain processes and items related to dental radiography.
Question 2
what sense is used to detect xrays?
Correct Answer
Xrays cannot be detected by any human sense
Question 3
How should the image receptor be aligned for a paralleling technique periapical
radiograph?
Correct Answer
Parallel to the tooth
Question 4
Which age group has the highest risk of developing somatic stochastic effects (such
as cancer) following a dental radiograph?
Correct Answer
0-10 yr olds
Page 1 of 15
, Question 5
On a dental panoramic radiograph, how do objects inside the horseshoe-shaped focal
trough appear?
Correct Answer
They are slightly magnified. This is due to the fact that the sensor is quite far away
from the patients face. The radiographic image "spreads out" a little as it passes
across this gap, so the image grows a little by the time it hits the sensor.
Question 6
What is not a main area to be addressed by a quality assurance programme?
Correct Answer
Patient complaint procedure
Question 7
Which effects of X-rays principally concern the dental profession?
Correct Answer
Somatic stochastic effects, we are mostly concerned about the chances of causing
damage to normal body cells.
Question 8
what is an advantage of using the paralleling technique when taking a periapical?
Correct Answer
The angulation of the tubehead is easily determined, When using the paralleling
technique, the image receptor holder/beam aiming device helps you line up the
tubehead correctly , so the X-ray beam hits the tooth and film/sensor at 90o.
Question 9
What do we normally mean when we say "dose" in relation to medical and dental
radiation exposures?
Correct Answer
Effective dose, effective doses accounts for the type of radiation used and the type
of body tissue being exposed.
Page 2 of 15
