Dental Assisting Radiology Practice
Exam Questions with Correct Verified
Solutions (2025-2026) Update.
A lead apron and a thyroid collar - Answer 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
- Answer 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 - Answer 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 - Answer
metal restorations
An example of cumulative radiation exposure is - Answer cataracts, leukemia, cancer
Anything that occupies space and has a form or shape is - Answer matter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard sign must
be posted in - Answer sight of patients, and sight of personnel
Chronic radiation exposure occurs when _______ dose of radiation is received over a
_______time period - Answer small; long
Damage caused by ionizing x-radiation to genetic cells: - Answer can affect future generations
Damage to which type of cell is passed on to future generations? - Answer genetic cell
Exposure to radiation: - Answer no matter how small, has the potential to cause harmful
biologic change
, One of the rules of radiation protection is never stand closer than _____ feet from the x-ray unit
during an exposure - Answer 6
Primary radiation is: - Answer also called the useful beam, the beam of x-ray that comes from
the target
Secondary radiation: - Answer refer to x-radiation that is created when the primary beam
interacts with matter
The Guidelines for Prescribing Dental Radiographs issued by the ADA and the FDA recommend
which of the following dental imaging procedures for a pregnant patient? - Answer
Radiographic imaging procedures do not need to be altered because of pregnancy
The maximum permissible dose for an occupational worker for an individual 18 years of age or
older is _____rem/year - Answer 5
The x-ray was discovered on November 8, 1895, by: - Answer Wilhelm Conrad Roentgen
Who should hold the film in a patient's mouth if the patient is unable to do so? - Answer
Parent or relative of the patient
When the matter switch is on: - Answer the electron cloud is emitted
An extraoral dental x-ray film is: - Answer more sensitive to light than intraoral film
Automatic film processing requires _____than manual film processing does - Answer less
equipment
Dental film holders, used to position and hold the dental x-ray films in the patient's mouth,
include: - Answer XPC and disposable block, EeZee-Grip and EndoRay
Film speed is determined by the: - Answer thickness of silver bromide salt, and size of the
silver bromide crystals
Exam Questions with Correct Verified
Solutions (2025-2026) Update.
A lead apron and a thyroid collar - Answer 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
- Answer 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 - Answer 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 - Answer
metal restorations
An example of cumulative radiation exposure is - Answer cataracts, leukemia, cancer
Anything that occupies space and has a form or shape is - Answer matter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard sign must
be posted in - Answer sight of patients, and sight of personnel
Chronic radiation exposure occurs when _______ dose of radiation is received over a
_______time period - Answer small; long
Damage caused by ionizing x-radiation to genetic cells: - Answer can affect future generations
Damage to which type of cell is passed on to future generations? - Answer genetic cell
Exposure to radiation: - Answer no matter how small, has the potential to cause harmful
biologic change
, One of the rules of radiation protection is never stand closer than _____ feet from the x-ray unit
during an exposure - Answer 6
Primary radiation is: - Answer also called the useful beam, the beam of x-ray that comes from
the target
Secondary radiation: - Answer refer to x-radiation that is created when the primary beam
interacts with matter
The Guidelines for Prescribing Dental Radiographs issued by the ADA and the FDA recommend
which of the following dental imaging procedures for a pregnant patient? - Answer
Radiographic imaging procedures do not need to be altered because of pregnancy
The maximum permissible dose for an occupational worker for an individual 18 years of age or
older is _____rem/year - Answer 5
The x-ray was discovered on November 8, 1895, by: - Answer Wilhelm Conrad Roentgen
Who should hold the film in a patient's mouth if the patient is unable to do so? - Answer
Parent or relative of the patient
When the matter switch is on: - Answer the electron cloud is emitted
An extraoral dental x-ray film is: - Answer more sensitive to light than intraoral film
Automatic film processing requires _____than manual film processing does - Answer less
equipment
Dental film holders, used to position and hold the dental x-ray films in the patient's mouth,
include: - Answer XPC and disposable block, EeZee-Grip and EndoRay
Film speed is determined by the: - Answer thickness of silver bromide salt, and size of the
silver bromide crystals
