DENTAL ASSISTING RADIOLOGY PRACTICE EXAM
QUESTIONS
A lead apron and a thyroid collar - Answers - must be used on all patients for all
exposures
A good technique for reducing the radiation exposure to both patient and operator is the
use of - Answers - fast film or digital imaging
A patient is concerned with radiation exposure. You can assure him that your office
uses the ALARA concept, which includes - Answers - reducing the number of
exposures, minimizing retakes, keeping exposure levels as low as possible
All of the following structures will appear radiolucent on dental x-ray film except -
Answers - metal restorations
An example of cumulative radiation exposure is - Answers - cataracts, leukemia,
cancer
Anything that occupies space and has a form or shape is - Answers - matter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard
sign must be posted in - Answers - sight of patients, and sight of personnel
Chronic radiation exposure occurs when _______ dose of radiation is received over a
_______time period - Answers - small; long
Damage caused by ionizing x-radiation to genetic cells: - Answers - can affect future
generations
Damage to which type of cell is passed on to future generations? - Answers - genetic
cell
Exposure to radiation: - Answers - no matter how small, has the potential to cause
harmful biologic change
How much filtration is federally required for a dental x-ray machine operating over 70
kVp? - Answers - 2.5 mm
The most commonly used film size for adult intraoral dentistry is size: - Answers - #2
The purpose of the lead foil in the dental film packet is to: - Answers - reduce film
fogging
, The radiographic image is located within the ____ of the radiographic film - Answers -
gelatin that suspends the emulsion
The recommended distance between the safelight and where the films are unwrapped
is: - Answers - 4 feet
The safest place to store unopened boxes of dental film is in the: - Answers - darkroom
When film emulsion interacts with x-ray, the result is: - Answers - a latent image
When placing a dental film in the patient's mouth, the white side is placed _____ the
tube and the raised dot to the _____ - Answers - toward; occlusal or incisal
_____ speed film is the newest and fastest film currently available - Answers - F
When developer solution in an automatic processor is warmer than 83 degree F, the
processed film will appear - Answers - dark or black
All the following are true statements about digitizing film-based radiographs EXCEPT: -
Answers - it duplicates the same detail as the original film
Clear spots on a processed film can be caused by: - Answers - fixer contacts film prior
to processing
The life of the processing solutions is affected by: - Answers - the number of films
processed, the time elapsed since last change, and the size of films processed
One reason for a lighter than normal radiograph is the: - Answers - developer solution
is too weak
A good protocol to follow for decreasing the contamination of dental imaging equipment
and supplies is to: - Answers - gather all supplies needed before beginning the
procedure, use overgloves if additional supplies are needed during a procedure, ask for
help
According to the CDC Guideline for Infection Control in Dental Healthcare Setting -
2003, digital radiography sensor: - Answers - should use FDA-cleared barriers
All the following are true statements regarding the preparation of the operatory for
dental imaging Except: - Answers - barriers should be used on all surfaces that cannot
be easily cleaned and disinfected
Calibration of dental x-ray equipment should be performed by: - Answers - a qualified
technician
Dental images are the property of the - Answers - dentist
QUESTIONS
A lead apron and a thyroid collar - Answers - must be used on all patients for all
exposures
A good technique for reducing the radiation exposure to both patient and operator is the
use of - Answers - fast film or digital imaging
A patient is concerned with radiation exposure. You can assure him that your office
uses the ALARA concept, which includes - Answers - reducing the number of
exposures, minimizing retakes, keeping exposure levels as low as possible
All of the following structures will appear radiolucent on dental x-ray film except -
Answers - metal restorations
An example of cumulative radiation exposure is - Answers - cataracts, leukemia,
cancer
Anything that occupies space and has a form or shape is - Answers - matter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard
sign must be posted in - Answers - sight of patients, and sight of personnel
Chronic radiation exposure occurs when _______ dose of radiation is received over a
_______time period - Answers - small; long
Damage caused by ionizing x-radiation to genetic cells: - Answers - can affect future
generations
Damage to which type of cell is passed on to future generations? - Answers - genetic
cell
Exposure to radiation: - Answers - no matter how small, has the potential to cause
harmful biologic change
How much filtration is federally required for a dental x-ray machine operating over 70
kVp? - Answers - 2.5 mm
The most commonly used film size for adult intraoral dentistry is size: - Answers - #2
The purpose of the lead foil in the dental film packet is to: - Answers - reduce film
fogging
, The radiographic image is located within the ____ of the radiographic film - Answers -
gelatin that suspends the emulsion
The recommended distance between the safelight and where the films are unwrapped
is: - Answers - 4 feet
The safest place to store unopened boxes of dental film is in the: - Answers - darkroom
When film emulsion interacts with x-ray, the result is: - Answers - a latent image
When placing a dental film in the patient's mouth, the white side is placed _____ the
tube and the raised dot to the _____ - Answers - toward; occlusal or incisal
_____ speed film is the newest and fastest film currently available - Answers - F
When developer solution in an automatic processor is warmer than 83 degree F, the
processed film will appear - Answers - dark or black
All the following are true statements about digitizing film-based radiographs EXCEPT: -
Answers - it duplicates the same detail as the original film
Clear spots on a processed film can be caused by: - Answers - fixer contacts film prior
to processing
The life of the processing solutions is affected by: - Answers - the number of films
processed, the time elapsed since last change, and the size of films processed
One reason for a lighter than normal radiograph is the: - Answers - developer solution
is too weak
A good protocol to follow for decreasing the contamination of dental imaging equipment
and supplies is to: - Answers - gather all supplies needed before beginning the
procedure, use overgloves if additional supplies are needed during a procedure, ask for
help
According to the CDC Guideline for Infection Control in Dental Healthcare Setting -
2003, digital radiography sensor: - Answers - should use FDA-cleared barriers
All the following are true statements regarding the preparation of the operatory for
dental imaging Except: - Answers - barriers should be used on all surfaces that cannot
be easily cleaned and disinfected
Calibration of dental x-ray equipment should be performed by: - Answers - a qualified
technician
Dental images are the property of the - Answers - dentist
