DANB RHS EXAM - study guide Exam
comprehensive questions and verified
answers ACTUAL EXAM 2026 TEST!!
Graded A+ | 2026 EXAM UPDATE
Where is the most appropriate place to store dental?
In a cool, dry closet
Describe patient preparation for intraoral radiography
inspect the patients head and neck for any removable metal objects (jewelry, removable
dentures, hearing aids etc.)
Preparation for panoramic radiography
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)
Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
What is the bisecting technique?
The proper direction of the central ray is 90 degrees to the imaginary bisector
,what is the paralleling technique?;
why is it preferred?
- 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The use of outdated/expired dental film may cause the x-ray to have:
Foggy and can have a slightly greyish apperance
How is vertical angulation calculated in degrees?
+ if it angles downward
- if it angles upward
When do you take BW on children?
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?
Panoramic if available, less radiation
If a panoramic image is not available,what is the process on children exposure?
0-5 - occlusal, posterior BW and PA
6-9 smaller FMX
10-12 full FMX
What is edentulous?
partial or complete areas in the mouth with no teeth
How to properly expose edentulous patient?
, pano or 10-14 PA
When to use Tomography?
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?
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?
take a panoramic image
What is trismus?
Inability to open the jaw due to pain or infection
How to select the right receptor size? Children, Ant., Adults
Children 0
Ant 1
Adults 2 -3
What's different about dual film packages?
1 for dentist, 1 for specialist, increased radiation and slightly more expensive
What is cone beam tomography or CBCT? Primary use?
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
comprehensive questions and verified
answers ACTUAL EXAM 2026 TEST!!
Graded A+ | 2026 EXAM UPDATE
Where is the most appropriate place to store dental?
In a cool, dry closet
Describe patient preparation for intraoral radiography
inspect the patients head and neck for any removable metal objects (jewelry, removable
dentures, hearing aids etc.)
Preparation for panoramic radiography
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)
Outermost - innermost:
Enamel
Dentin
Pulp Canal
Nerve / Blood vessel
Bone
What is the bisecting technique?
The proper direction of the central ray is 90 degrees to the imaginary bisector
,what is the paralleling technique?;
why is it preferred?
- 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:
Foggy and can have a slightly greyish apperance
How is vertical angulation calculated in degrees?
+ if it angles downward
- if it angles upward
When do you take BW on children?
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?
Panoramic if available, less radiation
If a panoramic image is not available,what is the process on children exposure?
0-5 - occlusal, posterior BW and PA
6-9 smaller FMX
10-12 full FMX
What is edentulous?
partial or complete areas in the mouth with no teeth
How to properly expose edentulous patient?
, pano or 10-14 PA
When to use Tomography?
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?
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?
take a panoramic image
What is trismus?
Inability to open the jaw due to pain or infection
How to select the right receptor size? Children, Ant., Adults
Children 0
Ant 1
Adults 2 -3
What's different about dual film packages?
1 for dentist, 1 for specialist, increased radiation and slightly more expensive
What is cone beam tomography or CBCT? Primary use?
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
