RDA EXAM NEWEST 2024 ACTUAL EXAM
COMPLETE 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
Supernumerary teeth are best detected using what type of image receptor? - ANSWER
panoramic
The most common radiographic exposure used to evaluate a dental implant on an adult
is:
bitewing.
panoramic.
occlusal.
periapical. - ANSWER periapical
Compared to a dentulous patient, radiographic exposure time on an edentulous adult
patient should:
remain unchanged
decrease
be doubled
increase - ANSWER decrease
Which image would be best utilized to see the relationship of the alveolar bone?
Periapical
Vertical bitewing
Horizontal bitewing
Occlusal - ANSWER vertical bitewing
Where is the most common area in the oral cavity for a dentigerous cyst?
Around the third molars
Around the canines
Between the central incisors
Between the premolars - ANSWER around the third molars
After using a lead apron on a patient for digital radiograph exposure, it should be:
sprayed with high level disinfectant.
covered with a barrier.
wiped with intermediate disinfectant.
folded and stored in a closed cupboard for future use. - ANSWER wiped with
intermediate disinfectant
The total destruction of microorganisms and spores on reusable instruments is
accomplished by:
,disinfecting.
sterilizing.
ultrasonic immersion.
spraying with a germicide. - ANSWER sterilizing
A panoramic image appears to have a "reverse smile" when the:
Frankfort plane is angled upward.
midsagittal plane is angled to the right.
midsagittal plane is angled to the left.
Frankfort plane is angled downward. - ANSWER Frankfort plane is angled upward
On a full mouth series with eighteen images, how many anterior images are exposed?
5
6
7
8 - ANSWER 6
To view an abscess on tooth #25, the best radiographic exposure is a/an
occlusal.
panoramic.
bitewing.
periapical. - ANSWER periapical
Which of the following regulates the manufacturing and installation of x-ray equipment?
American Dental Association
Federal Government
Local Government
State Government - ANSWER Federal Government
During radiographic exposures, semi-critical items that must be sterilized or disposed of
include:
sensor positioning devices.
tubehead.
exposure buttons.
PID. - ANSWER sensor positioning devices
ALARA is primarily concerned with the radiation that is
terrestrial.
artificial.
environmental.
cosmic. - ANSWER artificial
On an anterior image, the anterior alveolar crest normally appears:
flat and smooth
as a triangular-shaped radiopacity
as a dense radiopaque line
, pointed and sharp - ANSWER pointed and sharp
Prior to exposing dental radiographs on a visually impaired patient, the dental assistant
should:
set the exposure time to increase radiation.
ask the caregiver to stabilize the image receptor.
use touch to explain the equipment and procedure.
set the exposure time to decrease radiation. - ANSWER use touch to explain the
equipment and procedure
Which of the following would cause elongation on a radiograph?
Excessive horizontal angulation
Excessive vertical angulation
Insufficient veritical angulation
Insufficient horizontal angulation - ANSWER Insufficient veritical angulation
The most important step the dentist can take in protecting patients from x-radiation is to:
avoid filtration.
properly use collimation.
avoid positioning devices.
properly prescribe radiographs. - ANSWER properly prescribe radiographs
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum
equivalent filtration must be a minimum of
1.0 mm.
1.5 mm.
2.0 mm.
2.5 mm. - ANSWER 1.5 mm
Which of the following errors occur when the vertical angulation is incorrect?
Blurred image
Elongation
Overlapping
Cone cut - ANSWER Elongation
The most common reason for taking bitewing radiographs is to evaluate
occlusal caries.
incipient caries.
interproximal caries.
calculus. - ANSWER interproximal caries
Which of the following structures would appear radiopaque on a dental radiograph?
Pulp tissue
Periodontal ligament
Bone
Air space - ANSWER Bone
COMPLETE 200 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
Supernumerary teeth are best detected using what type of image receptor? - ANSWER
panoramic
The most common radiographic exposure used to evaluate a dental implant on an adult
is:
bitewing.
panoramic.
occlusal.
periapical. - ANSWER periapical
Compared to a dentulous patient, radiographic exposure time on an edentulous adult
patient should:
remain unchanged
decrease
be doubled
increase - ANSWER decrease
Which image would be best utilized to see the relationship of the alveolar bone?
Periapical
Vertical bitewing
Horizontal bitewing
Occlusal - ANSWER vertical bitewing
Where is the most common area in the oral cavity for a dentigerous cyst?
Around the third molars
Around the canines
Between the central incisors
Between the premolars - ANSWER around the third molars
After using a lead apron on a patient for digital radiograph exposure, it should be:
sprayed with high level disinfectant.
covered with a barrier.
wiped with intermediate disinfectant.
folded and stored in a closed cupboard for future use. - ANSWER wiped with
intermediate disinfectant
The total destruction of microorganisms and spores on reusable instruments is
accomplished by:
,disinfecting.
sterilizing.
ultrasonic immersion.
spraying with a germicide. - ANSWER sterilizing
A panoramic image appears to have a "reverse smile" when the:
Frankfort plane is angled upward.
midsagittal plane is angled to the right.
midsagittal plane is angled to the left.
Frankfort plane is angled downward. - ANSWER Frankfort plane is angled upward
On a full mouth series with eighteen images, how many anterior images are exposed?
5
6
7
8 - ANSWER 6
To view an abscess on tooth #25, the best radiographic exposure is a/an
occlusal.
panoramic.
bitewing.
periapical. - ANSWER periapical
Which of the following regulates the manufacturing and installation of x-ray equipment?
American Dental Association
Federal Government
Local Government
State Government - ANSWER Federal Government
During radiographic exposures, semi-critical items that must be sterilized or disposed of
include:
sensor positioning devices.
tubehead.
exposure buttons.
PID. - ANSWER sensor positioning devices
ALARA is primarily concerned with the radiation that is
terrestrial.
artificial.
environmental.
cosmic. - ANSWER artificial
On an anterior image, the anterior alveolar crest normally appears:
flat and smooth
as a triangular-shaped radiopacity
as a dense radiopaque line
, pointed and sharp - ANSWER pointed and sharp
Prior to exposing dental radiographs on a visually impaired patient, the dental assistant
should:
set the exposure time to increase radiation.
ask the caregiver to stabilize the image receptor.
use touch to explain the equipment and procedure.
set the exposure time to decrease radiation. - ANSWER use touch to explain the
equipment and procedure
Which of the following would cause elongation on a radiograph?
Excessive horizontal angulation
Excessive vertical angulation
Insufficient veritical angulation
Insufficient horizontal angulation - ANSWER Insufficient veritical angulation
The most important step the dentist can take in protecting patients from x-radiation is to:
avoid filtration.
properly use collimation.
avoid positioning devices.
properly prescribe radiographs. - ANSWER properly prescribe radiographs
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum
equivalent filtration must be a minimum of
1.0 mm.
1.5 mm.
2.0 mm.
2.5 mm. - ANSWER 1.5 mm
Which of the following errors occur when the vertical angulation is incorrect?
Blurred image
Elongation
Overlapping
Cone cut - ANSWER Elongation
The most common reason for taking bitewing radiographs is to evaluate
occlusal caries.
incipient caries.
interproximal caries.
calculus. - ANSWER interproximal caries
Which of the following structures would appear radiopaque on a dental radiograph?
Pulp tissue
Periodontal ligament
Bone
Air space - ANSWER Bone
