What is the annual maximum permissible dose (MPD) for a pregnant dental assistant?

The annual maximum permissible dose (MPD) for a pregnant dental assistant is correctly identified as being 5 mSv or 0.5 REM. This limit is established to protect the developing fetus from potential radiation exposure, as the radiation sensitivity of a fetus is higher compared to that of an adult.

The established guideline for pregnant workers assumes that any potential risk should be minimized to ensure both maternal and fetal safety. The 5 mSv limit reflects a cautious approach, allowing for some occupational exposure while still prioritizing safety, in contrast to the higher limits set for non-pregnant workers. It is crucial to keep this exposure well below the threshold that could potentially induce harmful effects.

This understanding is paramount for ensuring compliance with safety protocols in dental settings and reflects the commitment to maintaining a safe working environment for both staff and patients.