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DANB Chemical Disinfectants & Sterilants Flashcards

7 cards from real DANB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 DANB Chemical Disinfectants & Sterilants flashcards as text

  1. Which organization is responsible for registering disinfectants used in dental settings in the United States?

    Answer: EPA

    The Environmental Protection Agency (EPA) registers all disinfectants and sterilants used in dental and healthcare settings in the U.S.

  2. What are the three levels of disinfection recognized in dental infection control?

    Answer: Low, intermediate, and high

    Disinfection is categorized into three levels—low, intermediate, and high—based on the spectrum of microorganisms the disinfectant can kill.

  3. Which level of disinfection is required to kill all microorganisms including Mycobacterium tuberculosis but NOT necessarily high numbers of bacterial spores?

    Answer: Intermediate-level

    Intermediate-level disinfection kills most microorganisms including M. tuberculosis and fungi but may not eliminate high numbers of resistant bacterial spores.

  4. Glutaraldehyde used as a liquid chemical sterilant typically requires a minimum contact time of how long?

    Answer: 6–10 hours

    To achieve sterilization, glutaraldehyde must remain in contact with instruments for 6–10 hours depending on the product formulation.

  5. Which chemical agent is classified as a high-level disinfectant and chemical sterilant in dentistry?

    Answer: 2% glutaraldehyde

    2% glutaraldehyde is an EPA-registered high-level disinfectant and chemical sterilant capable of killing all microorganisms including spores with prolonged exposure.

  6. Quaternary ammonium compounds (quats) are classified as what level of disinfectant?

    Answer: Low-level

    Quaternary ammonium compounds are low-level disinfectants effective against some bacteria and lipid-enveloped viruses but not against mycobacteria, bacterial spores, or non-enveloped viruses.

  7. Which level of disinfectant is most appropriate for clinical contact surfaces in dental operatories?

    Answer: Intermediate-level or higher

    CDC guidelines recommend intermediate-level disinfectants (EPA-registered hospital disinfectants with a tuberculocidal claim) for clinical contact surfaces in dental settings.