Infection Control and Sterilization Flashcards
7 cards from real NDECC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Infection Control and Sterilization flashcards as text
Which sterilization method is considered the gold standard for heat-stable dental instruments?
Answer: Steam autoclave sterilization
Steam autoclave sterilization is the gold standard because it reliably kills all microorganisms including spores at 121–134°C under pressure.
According to CDC guidelines, dental handpieces should be cleaned and sterilized between patients using which process?
Answer: Steam autoclave sterilization
The CDC recommends that dental handpieces be heat-sterilized (autoclaved) between patients, not just disinfected, because they contact mucous membranes.
What is the appropriate biological indicator (spore test) organism used to verify steam autoclave sterilization?
Answer: Geobacillus stearothermophilus
Geobacillus stearothermophilus spores are used as the biological indicator for steam sterilization because of their high heat resistance.
When should sterilization pouches be inspected before use on a patient?
Answer: Before each use to check chemical indicator and pouch integrity
Each sterilization pouch must be inspected before use to confirm the chemical indicator has changed color and the seal is intact, ensuring the item was properly processed.
Which level of personal protective equipment (PPE) is required when manually scrubbing contaminated dental instruments before sterilization?
Answer: Heavy-duty utility gloves, mask, eye protection, and gown
Heavy-duty utility gloves, mask, eye protection, and protective gown are required during instrument scrubbing to protect against punctures, splashes, and aerosols from contaminated instruments.
An ultrasonic cleaner is used in the instrument reprocessing area primarily to:
Answer: Remove bioburden from instruments before sterilization
Ultrasonic cleaners use cavitation to remove debris and bioburden from instruments prior to sterilization; they do not sterilize or disinfect.
Which of the following surfaces in the dental operatory is classified as a 'clinical contact surface' requiring disinfection or barrier protection between patients?
Answer: Dental unit light handle
The dental unit light handle is a clinical contact surface that is touched during patient care and can become contaminated, requiring barrier protection or disinfection between patients.