Radiation Health & SafetyQuestion 2 of 100
What is the generally accepted annual whole-body occupational dose limit for a dental assistant who works with radiographic equipment?
a.5 rem (0.05 Sv) per year
b.0.5 rem (0.005 Sv) per year
c.25 rem (0.25 Sv) per year
d.50 rem (0.5 Sv) per year
Explanation
The maximum permissible dose for an occupationally exposed adult worker is 5 rem (0.05 Sv) of whole-body exposure per year. The 0.5 rem figure is far lower and is closer to limits set for non-occupationally exposed persons. The 25 rem and 50 rem values are dangerously high and are not used as annual occupational limits in dentistry.
Law Reference: NCRP Report No. 145: Radiation Protection in DentistryPractice all 100 questions free — no signup required.
Related questions on this topic
- A dental assistant is asked to explain the ALARA concept to a new hire. Which statement best describes ALARA?
- A patient is seated for a full-mouth series. Which combination best protects the patient's most radiosensitive tissues during the exposures?
- The operatory has no protective barrier or wall to stand behind during an exposure. What is the minimum distance and position the operator should use?
- The dentist asks the assistant to increase the penetrating power of the x-ray beam for a patient with dense bone. Which exposure factor should be adjusted?
- Which pair of settings together determines the QUANTITY (number of photons) of radiation produced during an exposure?
- A practice replaces its round position-indicating devices with rectangular collimation. What is the main benefit to the patient?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against DANB Radiation Health & Safety (RHS) + Infection Control (ICE) Exams · How we review