Safety & Infection Control Flashcards
7 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety & Infection Control flashcards as text
What is the minimum contact time required when using a 1:10 sodium hypochlorite solution as a surface disinfectant in the dental laboratory?
Answer: 10 minutes
A 1:10 bleach solution requires a minimum of 10 minutes contact time to achieve disinfection of environmental surfaces.
Which OSHA standard specifically addresses chemical hazard communication and requires Safety Data Sheets in the dental laboratory?
Answer: Hazard Communication Standard (29 CFR 1910.1200)
OSHA's Hazard Communication Standard (HazCom/GHS) requires SDSs, container labeling, and employee training for all hazardous chemicals in the workplace.
How should a dental ceramist handle a broken mercury thermometer or other mercury spill in the laboratory?
Answer: Use a mercury spill kit and follow established cleanup protocol
Mercury spills require a specialized spill kit; brooms, vacuums, and bare hands increase exposure by dispersing mercury vapor or creating fine particles.
What does the term 'engineering control' mean in the context of dental laboratory safety?
Answer: Isolating or removing hazards through physical means such as ventilation or sharps containers
Engineering controls physically remove or isolate hazards (e.g., local exhaust ventilation, sharps containers) and are preferred over administrative controls or PPE.
Which microorganism is of greatest concern when dealing with contaminated dental prostheses due to its ability to form resistant endospores?
Answer: Clostridium species
Clostridium species form highly resistant endospores that can survive routine disinfection, requiring sterilization methods that achieve sporicidal activity.
What information must be included on a secondary container label for a hazardous chemical transferred in the dental laboratory?
Answer: Product identifier and appropriate hazard warnings
OSHA HazCom requires secondary container labels to include a product identifier and words, pictures, or symbols that convey the chemical's hazards.
What is the recommended frequency for replacing gloves during extended dental laboratory procedures involving biohazardous materials?
Answer: Whenever integrity is compromised, after each patient case, or when touching non-contaminated areas
Gloves must be changed when torn, after each patient case, or when transitioning to clean areas to prevent cross-contamination.