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RHS DANB EXAM 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Where is the most appropriate place to store dental? -
ANSWER-In a cool, dry closet
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
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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The use of outdated/expired dental film may cause the x-ray to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
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- 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
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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
RHS DANB EXAM 2026/2027
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
Where is the most appropriate place to store dental? -
ANSWER-In a cool, dry closet
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
,2 | Page
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
,3 | Page
- 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
, 4 | Page
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
