Radiation Health and Safety ACTUAL
Questions and CORRECT Answers
When taking a panoramic radiograph of an obese patient, as compared to a slim patient, exposure
(kVp or mA) should - CORRECT ANSWER - to be increased
The major disadvantage of the bisecting angle technique is that - CORRECT ANSWER -
Image distortion is more likely
The reduce cross - contamination during radiography, the CDC and ADA recommended that the
operators do all of the following EXCEPT - CORRECT ANSWER - Take complete
medical histories
Ideally, a lead apron would be used - CORRECT ANSWER - For any dental radiographs
A full mouth radiographic series has just been processed manually. The operator notes that the
films on the button of the rack are of different density. What could have caused this? -
CORRECT ANSWER - Solutions were not stirred before processing
X-ray exposure time should be increased if the patient is - CORRECT ANSWER - A large
adult
Before exposing a panoramic radiograph on a patient, the operator should request the removal of
all of the following EXCEPT: - CORRECT ANSWER - Watch
A parent refuses for i have radiographs taken on his/her child. The dental assistant should -
CORRECT ANSWER - Inform the dentist and document Parent's refusal
Incorrect horizontal angulation of the primary beam produces - CORRECT ANSWER -
Overlapping of proximal surfaces
, Where is the radiographic landmark incisive foramen usually located - CORRECT
ANSWER - Maxillary anterior
Cephalometric radiographs are primarily indicated to evaluate - CORRECT ANSWER -
Jaw relationships
When taking a panoramic radiograph, the patient's head should be oriented - CORRECT
ANSWER - with the midsagittal plane perpendicular to the floor
A full mouth radiographic survey has just been processed manually. The top films on the
processing rack have a straight, clear border on the upper edge. This error is caused by -
CORRECT ANSWER - Too low a level of developer solution
Density of a radiograph is controlled by all of the following EXCEPT - CORRECT
ANSWER - OFD [[object film distance]]
Which method is considered MOST effective for handling and processing radiographs to prevent
microbial contamination? - CORRECT ANSWER - cover with barrier envelopes
A person exposing x-rays can BEST be protected from scattered radiation by - CORRECT
ANSWER - standing behind a lead barrier
If there is no teeth to serve as guides, which of the following landmarks indicate a maxillary
molar area radiograph - CORRECT ANSWER - Tuberosity
Which of the following materials is MOST resistant to the penetration of ionizing radiation? -
CORRECT ANSWER - Lead
In which radiographic technique is the patient positioned in a device to support his chin? -
CORRECT ANSWER - Panoramic
Questions and CORRECT Answers
When taking a panoramic radiograph of an obese patient, as compared to a slim patient, exposure
(kVp or mA) should - CORRECT ANSWER - to be increased
The major disadvantage of the bisecting angle technique is that - CORRECT ANSWER -
Image distortion is more likely
The reduce cross - contamination during radiography, the CDC and ADA recommended that the
operators do all of the following EXCEPT - CORRECT ANSWER - Take complete
medical histories
Ideally, a lead apron would be used - CORRECT ANSWER - For any dental radiographs
A full mouth radiographic series has just been processed manually. The operator notes that the
films on the button of the rack are of different density. What could have caused this? -
CORRECT ANSWER - Solutions were not stirred before processing
X-ray exposure time should be increased if the patient is - CORRECT ANSWER - A large
adult
Before exposing a panoramic radiograph on a patient, the operator should request the removal of
all of the following EXCEPT: - CORRECT ANSWER - Watch
A parent refuses for i have radiographs taken on his/her child. The dental assistant should -
CORRECT ANSWER - Inform the dentist and document Parent's refusal
Incorrect horizontal angulation of the primary beam produces - CORRECT ANSWER -
Overlapping of proximal surfaces
, Where is the radiographic landmark incisive foramen usually located - CORRECT
ANSWER - Maxillary anterior
Cephalometric radiographs are primarily indicated to evaluate - CORRECT ANSWER -
Jaw relationships
When taking a panoramic radiograph, the patient's head should be oriented - CORRECT
ANSWER - with the midsagittal plane perpendicular to the floor
A full mouth radiographic survey has just been processed manually. The top films on the
processing rack have a straight, clear border on the upper edge. This error is caused by -
CORRECT ANSWER - Too low a level of developer solution
Density of a radiograph is controlled by all of the following EXCEPT - CORRECT
ANSWER - OFD [[object film distance]]
Which method is considered MOST effective for handling and processing radiographs to prevent
microbial contamination? - CORRECT ANSWER - cover with barrier envelopes
A person exposing x-rays can BEST be protected from scattered radiation by - CORRECT
ANSWER - standing behind a lead barrier
If there is no teeth to serve as guides, which of the following landmarks indicate a maxillary
molar area radiograph - CORRECT ANSWER - Tuberosity
Which of the following materials is MOST resistant to the penetration of ionizing radiation? -
CORRECT ANSWER - Lead
In which radiographic technique is the patient positioned in a device to support his chin? -
CORRECT ANSWER - Panoramic
