DANB RADIOLOGY ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
◉ Describe patient preparation for intraoral radiography. Answer:
inspect the patients head and neck for any removable metal objects
(jewelry, removable dentures, hearing aids etc.)
◉ Preparation for panoramic radiography. Answer: Remove any glasses
or removable prostheses, hearing aids, jewelry, etc.
*No thyroid collar and back is exposed
◉ What should X-ray generally include? (5 tissue types). Answer:
Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
◉ What is the bisecting technique? Answer: The proper direction of the
central ray is 90 degrees to the imaginary bisector
,◉ what is the paralleling technique?;
why is it preferred? Answer: - Film aligned to the long axis of the teeth
less distortion
◉ The use of outdated/expired dental film may cause the x-ray to have:.
Answer: Foggy and can have a slightly greyish apperance
◉ How is vertical angulation calculated in degrees? Answer: + if it
angles downward
- if it angles upward
◉ When do you take BW on children? Answer: If there is no decay, BW
are done every 1- 1.5 years until permanent teeth come in, after that. 2
years
◉ What is the best exposure technique on children? and why? Answer:
Panoramic if available, less radiation
◉ If a panoramic image is not available,what is the process on children
exposure? Answer: 0-5 - occlusal, posterior BW and PA
6-9 smaller FMX
10-12 full FMX
,◉ What is edentulous? Answer: partial or complete areas in the mouth
with no teeth
◉ How to properly expose edentulous patient? Answer: pano or 10-14
PA
◉ When to use Tomography? Answer: Assess or obtain a three-
dimensional view of various sites. Possible implant or when need to
know the amount of bone present
◉ Disadvantages of CT? Answer: Higher doses of radiation.
-More expensive than plain radiograph
-Still limited visualization of soft tissue
◉ What to do when it's difficult to take posterior images? Answer: take a
panoramic image
◉ What is trismus? Answer: Inability to open the jaw due to pain or
infection
◉ How to select the right receptor size? Children, Ant., Adults. Answer:
Children 0
Ant 1
, Adults 2 -3
◉ What's different about dual film packages? Answer: 1 for dentist, 1
for specialist, increased radiation and slightly more expensive
◉ What is cone beam tomography or CBCT? Primary use? Answer:
Cone beam tomography is a cone shaped x-ray beam that moves around
the patients head and face 360 degrees rotation for 10-40 seconds.
Orthodontia
◉ When are Snap-a-rays typically used?
When do you not use Snap-a-rays? Answer: On pediatric patients, gag
reflexes and situations where distortion is not a great issue. Pre molars,
molars and 3rds
Evaluations of toothless individuals or endodontic disease
◉ How do you classify intraoral films?
What does the x mean? Answer: PA - 1.x
BW - 2.x
O - 3.x
◉ For intraoral x-rays, what film speed is the fastest and reduces the
amount of patient exposure to radiation? Answer: F - fastest
QUESTIONS WITH ANSWERS GRADED A+
◉ Describe patient preparation for intraoral radiography. Answer:
inspect the patients head and neck for any removable metal objects
(jewelry, removable dentures, hearing aids etc.)
◉ Preparation for panoramic radiography. Answer: Remove any glasses
or removable prostheses, hearing aids, jewelry, etc.
*No thyroid collar and back is exposed
◉ What should X-ray generally include? (5 tissue types). Answer:
Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
◉ What is the bisecting technique? Answer: The proper direction of the
central ray is 90 degrees to the imaginary bisector
,◉ what is the paralleling technique?;
why is it preferred? Answer: - Film aligned to the long axis of the teeth
less distortion
◉ The use of outdated/expired dental film may cause the x-ray to have:.
Answer: Foggy and can have a slightly greyish apperance
◉ How is vertical angulation calculated in degrees? Answer: + if it
angles downward
- if it angles upward
◉ When do you take BW on children? Answer: If there is no decay, BW
are done every 1- 1.5 years until permanent teeth come in, after that. 2
years
◉ What is the best exposure technique on children? and why? Answer:
Panoramic if available, less radiation
◉ If a panoramic image is not available,what is the process on children
exposure? Answer: 0-5 - occlusal, posterior BW and PA
6-9 smaller FMX
10-12 full FMX
,◉ What is edentulous? Answer: partial or complete areas in the mouth
with no teeth
◉ How to properly expose edentulous patient? Answer: pano or 10-14
PA
◉ When to use Tomography? Answer: Assess or obtain a three-
dimensional view of various sites. Possible implant or when need to
know the amount of bone present
◉ Disadvantages of CT? Answer: Higher doses of radiation.
-More expensive than plain radiograph
-Still limited visualization of soft tissue
◉ What to do when it's difficult to take posterior images? Answer: take a
panoramic image
◉ What is trismus? Answer: Inability to open the jaw due to pain or
infection
◉ How to select the right receptor size? Children, Ant., Adults. Answer:
Children 0
Ant 1
, Adults 2 -3
◉ What's different about dual film packages? Answer: 1 for dentist, 1
for specialist, increased radiation and slightly more expensive
◉ What is cone beam tomography or CBCT? Primary use? Answer:
Cone beam tomography is a cone shaped x-ray beam that moves around
the patients head and face 360 degrees rotation for 10-40 seconds.
Orthodontia
◉ When are Snap-a-rays typically used?
When do you not use Snap-a-rays? Answer: On pediatric patients, gag
reflexes and situations where distortion is not a great issue. Pre molars,
molars and 3rds
Evaluations of toothless individuals or endodontic disease
◉ How do you classify intraoral films?
What does the x mean? Answer: PA - 1.x
BW - 2.x
O - 3.x
◉ For intraoral x-rays, what film speed is the fastest and reduces the
amount of patient exposure to radiation? Answer: F - fastest
