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RHS DANB EXAM QUESTIONS AND
ANSWERS
Where is the most appropriate place to store dental? - correct
answer- In a cool, dry closet
Describe patient preparation for intraoral radiography - correct
answer- inspect the patients head and neck for any removable
metal objects (jewelry, removable dentures, hearing aids etc.)
Preparation for panoramic radiography - correct 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) - correct
answer- Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
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What is the bisecting technique? - correct answer- The proper
direction of the central ray is 90 degrees to the imaginary
bisector
what is the paralleling technique?;
why is it preferred? - correct 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The use of outdated/expired dental film may cause the x-ray to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: - correct answer- Foggy and can have a slightly greyish
apperance
How is vertical angulation calculated in degrees? - correct
answer- + if it angles downward
- if it angles upward
When do you take BW on children? - correct answer- If there is
no decay, BW are done every 1- 1.5 years until permanent
teeth come in, after that.. 2 years
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What is the best exposure technique on children? and why? -
correct answer- Panoramic if available, less radiation
If a panoramic image is not available,what is the process on
children exposure? - correct answer- 0-5 - occlusal, posterior
BW and PA
6-9 smaller FMX
10-12 full FMX
What is edentulous? - correct answer- partial or complete areas
in the mouth with no teeth
How to properly expose edentulous patient? - correct answer-
pano or 10-14 PA
When to use Tomography? - correct answer- Assess or obtain a
three-dimensional view of various sites. Possible implant or
when need to know the amount of bone present
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Disadvantages of CT? - correct 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? - correct
answer- take a panoramic image
What is trismus? - correct answer- Inability to open the jaw due
to pain or infection
How to select the right receptor size? Children, Ant., Adults -
correct answer- Children 0
Ant 1
Adults 2 -3
What's different about dual film packages? - correct answer- 1
for dentist, 1 for specialist, increased radiation and slightly more
expensive
What is cone beam tomography or CBCT? Primary use? -
correct answer- Cone beam tomography is a cone shaped x-
RHS DANB EXAM QUESTIONS AND
ANSWERS
Where is the most appropriate place to store dental? - correct
answer- In a cool, dry closet
Describe patient preparation for intraoral radiography - correct
answer- inspect the patients head and neck for any removable
metal objects (jewelry, removable dentures, hearing aids etc.)
Preparation for panoramic radiography - correct 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) - correct
answer- Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
,2 | Page
What is the bisecting technique? - correct answer- The proper
direction of the central ray is 90 degrees to the imaginary
bisector
what is the paralleling technique?;
why is it preferred? - correct 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: - correct answer- Foggy and can have a slightly greyish
apperance
How is vertical angulation calculated in degrees? - correct
answer- + if it angles downward
- if it angles upward
When do you take BW on children? - correct answer- If there is
no decay, BW are done every 1- 1.5 years until permanent
teeth come in, after that.. 2 years
,3 | Page
What is the best exposure technique on children? and why? -
correct answer- Panoramic if available, less radiation
If a panoramic image is not available,what is the process on
children exposure? - correct answer- 0-5 - occlusal, posterior
BW and PA
6-9 smaller FMX
10-12 full FMX
What is edentulous? - correct answer- partial or complete areas
in the mouth with no teeth
How to properly expose edentulous patient? - correct answer-
pano or 10-14 PA
When to use Tomography? - correct answer- Assess or obtain a
three-dimensional view of various sites. Possible implant or
when need to know the amount of bone present
, 4 | Page
Disadvantages of CT? - correct 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? - correct
answer- take a panoramic image
What is trismus? - correct answer- Inability to open the jaw due
to pain or infection
How to select the right receptor size? Children, Ant., Adults -
correct answer- Children 0
Ant 1
Adults 2 -3
What's different about dual film packages? - correct answer- 1
for dentist, 1 for specialist, increased radiation and slightly more
expensive
What is cone beam tomography or CBCT? Primary use? -
correct answer- Cone beam tomography is a cone shaped x-
