Work Environment and Conditions Flashcards
7 cards from real RDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Work Environment and Conditions flashcards as text
Which OSHA standard specifically addresses the handling of mercury in dental offices?
Answer: Hazard Communication Standard (29 CFR 1910.1200)
Mercury used in dental amalgam falls under the Hazard Communication Standard, which requires SDS, labeling, and worker training for hazardous chemicals.
When designing an ergonomic dental operatory layout, the assistant's stool should be positioned so the assistant is:
Answer: Four to six inches higher than the operator for better visibility
The dental assistant's stool should be positioned 4–6 inches higher than the operator's stool to provide a clear view of the oral cavity.
What is the primary purpose of an amalgam separator in a dental office?
Answer: To prevent mercury-containing amalgam particles from entering the wastewater system
Amalgam separators capture mercury-containing amalgam waste before it can enter the sanitary sewer system, protecting the environment.
Noise levels in a dental office can exceed safe limits primarily due to:
Answer: High-speed handpieces and ultrasonic scalers operating continuously
High-speed handpieces and ultrasonic scalers generate noise levels that, with prolonged exposure, can contribute to noise-induced hearing loss.
A dental assistant is pregnant. Regarding occupational radiation exposure, the recommended additional monthly dose limit for the embryo/fetus is:
Answer: 0.5 mSv per month
NCRP recommends an additional monthly limit of 0.5 mSv (50 mrem) for the embryo/fetus of a declared pregnant radiation worker.
Which statement about the dental unit waterline (DUWL) is correct regarding infection control?
Answer: DUWL can harbor microbial biofilms that contaminate water used in patient care
Dental unit waterlines can develop microbial biofilms that release bacteria into water used during patient care, posing an infection risk.
What does the term 'universal precautions' mean in the context of a dental work environment?
Answer: Treating all human blood and certain body fluids as if known to be infectious
Universal precautions means treating all blood and potentially infectious body fluids as if they are infectious, regardless of the patient's known status.