Questions and Answers Latest Update
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Which of the following materials is most effective for shielding against radiation in dental
offices?
A) Plastic
B) Glass
✔✔C) Lead
D) Wood
Why is it important to minimize the number of radiographs taken?
✔✔A) To reduce unnecessary radiation exposure to patients
B) To reduce the cost of dental services
C) To speed up the imaging process
D) To increase the number of patients served
What is the maximum allowable dose of radiation for dental professionals per year, according to
safety regulations?
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,A) 50 mSv
✔✔B) 50 rem
C) 100 mSv
D) 25 mSv
When is it appropriate to take a full-mouth series of X-rays on a patient?
A) Every visit
✔✔B) Only when clinically necessary based on the patient’s dental condition
C) When the patient requests it
D) When the patient has no visible teeth
What is the purpose of using a lead apron during dental radiographic procedures?
✔✔A) To protect the patient’s body from scatter radiation
B) To protect the equipment from radiation damage
C) To speed up the imaging process
D) To improve the clarity of the X-ray
Which of the following is the most common source of radiation exposure in a dental setting?
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, A) Dental X-ray machine
✔✔B) X-ray tubehead
C) The dental chair
D) The light used in the operatory
What does the ALARA principle stand for in radiation safety?
A) As Low As Reasonably Available
B) As Low As Radiation Acceptable
✔✔C) As Low As Reasonably Achievable
D) Always Limit Average Radiation
How can a dental professional minimize their exposure to radiation during radiographic
procedures?
A) Stand as close to the X-ray machine as possible
B) Hold the radiographic film or sensor during exposure
✔✔C) Stand behind a protective barrier and use the correct technique
D) Avoid wearing a dosimeter
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