RHS DANB EXAM QUESTIONS AND 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
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The use of outdated/expired dental film may cause the x-ray to have: - (ANSWER)Foggy and can have a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
,RHS DANB EXAM QUESTIONS AND ANSWERS
- 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
, RHS DANB EXAM QUESTIONS AND ANSWERS
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 (Incorporation of tabular shaped (vs round) grains into the emulsion,
thus increasing effective surface areas.
The type of radiograph that would show the whole tooth including the crown, roots and jawline is
called:
Size: - (ANSWER)Periapical X-ray
Size- Comes in 0, 1 and 2
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
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
,RHS DANB EXAM QUESTIONS AND ANSWERS
- 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
, RHS DANB EXAM QUESTIONS AND ANSWERS
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 (Incorporation of tabular shaped (vs round) grains into the emulsion,
thus increasing effective surface areas.
The type of radiograph that would show the whole tooth including the crown, roots and jawline is
called:
Size: - (ANSWER)Periapical X-ray
Size- Comes in 0, 1 and 2
