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Iowa Dental Board Infection Control Exam with verified solutions

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Iowa Dental Board Infection Control Exam with verified solutions

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LOWA dental
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Uploaded on
April 28, 2025
Number of pages
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Written in
2024/2025
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Exam (elaborations)
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Iowa Dental Board Infection
Control Exam with verified
solutions

How can dental patients and dental health care professionals be exposed to pathogenic
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




microorganisms? - correct answer ✔i. Direct contact with blood, oral fluids, or other patient |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




materials.

ii. Indirect contact with contaminated objects (e.g., instruments, equipment, or environmental
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




surfaces)

iii. Contact of conjunctival, nasal, or oral mucosa with drops (e.g., splatter) containing
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




microorganisms generated from an infected person and propelled a short distances (e.g., by |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




coughing, sneezing, or talking) |||||| |||||| ||||||




iv. Inhalation of air-borne microorganisms that can remain suspended in the air for long periods
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




How can dental patients and dental health care professionals use preventive practices to reduce
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




blood exposures? - correct answer ✔i. Careful handling of sharp instruments
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




ii. Use of rubber dams to minimize blood splattering
|||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




iii. Handwashing
||||||




iv. Use of protective barriers (e.g., gloves, masks, protective eyewear, and gowns)
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




What are the modes of transmission of pathogenic microorganisms in dental settings? - correct
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




answer ✔i. Direct transmission: an infectious agent is transferred from a reservoir to a susceptible
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




host by direct contact or droplet spread
|||||| |||||| |||||| |||||| |||||| ||||||




1. Direct contact: skin-to-skin contact, kissing, sexual intercourse
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




2. Droplet spread: spray with relatively large, short-range aerosols produce by sneezing, coughing,
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




or talking
||||||

, ii. Indirect transmission: refers to the transfer of an infectious agent from a reservoir to a
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




susceptible host by suspended air particles, inanimate objects (vehicles), or animate intermediaries |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




(vectors)

1. Airborne transmission: occurs when infectious agents are carried by dust or droplet nuclei
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




suspended in air |||||| ||||||




2. Vehicles: that may indirectly transmit an infectious agent include food, water, biological products
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




(blood), and fomite (inanimate objects such as handkerchiefs, bedding, or surgical scalpels)
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




3. Vectors: such as mosquitoes, fleas, and ticks may carry an infectious agent through purely
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




mechanical means or may support growth or changes in the agent |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Why is it important in dentistry to have an understanding of spores? - correct answer ✔Spores are
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




the most resistant to sterilization so a negative spore test indicates other potential pathogens have
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




been killed. ||||||




What is recommended in the case of a positive spore test? - correct answer ✔i. With steam
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




sterilizer, if other indicators demonstrate the sterilizer is working correctly, items other than
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




implantable devices do not necessarily need to be recalled. |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




ii. Spore test should be repeated immediately after correctly loading the sterilizer using the same
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




cycle that produced the failure. |||||| |||||| |||||| ||||||




iii. Sterilizer should be removed from service.
|||||| |||||| |||||| |||||| |||||| ||||||




iv. All records reviewed of chemical and mechanical monitoring since the last negative BI test
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




should be reviewed. |||||| ||||||




v. Sterilizer operating procedures should be reviewed, including packaging, loading, and spore
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




testing, with all persons who work with the sterilizer to determine whether operator error could be
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




responsible.
||||||




vi. If not a steam sterilizer, all materials processed in that sterilizer should be considered nonsterile
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




and retrieved, if possible, and reprocessed or held in quarantine until the results of the repeat BI
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




are known. ||||||




What does the term standard precautions mean? - correct answer ✔Standard Precautions are the
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




minimum infection prevention practices that apply to all patient care, regardless of suspected or
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




confirmed infection status of the patient, in any setting where health care is delivered. These |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




practices are designed to both protect DHCP and prevent DHCP from spreading infections among
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




patients. Standard precautions apply to contact with: |||||| |||||| |||||| |||||| |||||| ||||||




1. blood ||||||

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