Radiation Health and Safety UPDATED
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
A film that has been exposed to scattered radiation will appear - CORRECT ANSWER -
Fogged
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
Which of the following is MOST likely to contribute to the fogging of x - ray film - CORRECT
ANSWER - light leaks in the dark room
Which of the following conditions will result in a radiographic image that is too light? -
CORRECT ANSWER - Weak developing solution
The purpose of using film - holding devices when taking intraoral radiographs is to - CORRECT
ANSWER - Assist in correct film placement
A film with thin density and a herringbone pattern across it is the result of: - CORRECT
ANSWER - Film packet reversal
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
Using a faster speed film requires - CORRECT ANSWER - shorter exposure time
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
A film that has been exposed to scattered radiation will appear - CORRECT ANSWER -
Fogged
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
Which of the following is MOST likely to contribute to the fogging of x - ray film - CORRECT
ANSWER - light leaks in the dark room
Which of the following conditions will result in a radiographic image that is too light? -
CORRECT ANSWER - Weak developing solution
The purpose of using film - holding devices when taking intraoral radiographs is to - CORRECT
ANSWER - Assist in correct film placement
A film with thin density and a herringbone pattern across it is the result of: - CORRECT
ANSWER - Film packet reversal
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
Using a faster speed film requires - CORRECT ANSWER - shorter exposure time
