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Infection Control and Waste Management

Personal Protective Equipment (PPE) Practice Questions

20 free Personal Protective Equipment (PPE) practice questions for the CDA. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.

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Question 1 of 20 Medium

What is the primary purpose of personal protective equipment (PPE) in dental settings?

  1. A To improve the provider's professional appearance
  2. B To reduce exposure to infectious agents
  3. C To increase overall patient comfort levels
  4. D To satisfy aesthetic office design guidelines

Correct answer: To reduce exposure to infectious agents

PPE acts as a physical barrier between the provider and infectious materials. It reduces the risk of exposure to blood, saliva, and aerosols.

Question 2 of 20 Medium

Which piece of PPE must be changed between every patient?

  1. A Protective eyewear
  2. B Disposable gloves
  3. C Reusable mask frames
  4. D Clinical shoes

Correct answer: Disposable gloves

Gloves quickly become contaminated during care and cannot be disinfected. They must be changed for every patient to prevent cross-contamination.

Question 3 of 20 Medium

Which type of face protection is required during aerosol-generating procedures?

  1. A Cloth mask
  2. B Surgical mask only
  3. C N95 or equivalent respirator
  4. D No mask if eyewear is used

Correct answer: N95 or equivalent respirator

N95 respirators filter airborne particles generated during aerosol-producing procedures. This provides enhanced respiratory protection.

Question 4 of 20 Medium

Which step should be performed FIRST when donning PPE?

  1. A Put on gloves
  2. B Place mask or respirator
  3. C Put on gown
  4. D Put on protective eyewear

Correct answer: Put on gown

The gown is put on first to protect clothing before other PPE is added. This ensures proper barrier coverage.

Question 5 of 20 Medium

Protective eyewear should be worn because it:

  1. A Reduces glare and eye fatigue
  2. B Guards against splashes and debris
  3. C Improves visual clarity of the field
  4. D Provides magnification of the treatment area

Correct answer: Guards against splashes and debris

Eyewear protects mucous membranes from contaminants. Splashes of blood, saliva, or chemicals can pose infection risks.

Question 6 of 20 Medium

Masks should be replaced:

  1. A Once per day
  2. B Only when torn
  3. C When damp or contaminated
  4. D Only at the start of the week

Correct answer: When damp or contaminated

A damp mask loses filtration efficiency. Replacing it ensures ongoing respiratory protection.

Question 7 of 20 Medium

Gloves are NOT a substitute for:

  1. A Hand hygiene
  2. B Protective eyewear
  3. C Patient drapes
  4. D Sterile instruments

Correct answer: Hand hygiene

Gloves can develop microtears or become contaminated. Hand hygiene before and after glove use is essential.

Question 8 of 20 Medium

Face shields provide protection primarily for:

  1. A The respiratory tract alone
  2. B The face from splashes and aerosols
  3. C The hands and forearms only
  4. D The feet and lower legs only

Correct answer: The face from splashes and aerosols

Face shields protect eyes, nose, and mouth from splashes. They are used in addition to masks, not in place of them.

Question 9 of 20 Medium

Reusable gowns used for PPE must be:

  1. A Washed with regular office laundry
  2. B Laundered per infection-control protocols
  3. C Sprayed with disinfectant and reused at once
  4. D Shared among team members if clean

Correct answer: Laundered per infection-control protocols

Reusable gowns must be cleaned in compliance with medical laundry standards. This ensures contamination is eliminated.

Question 10 of 20 Medium

Which of the following is TRUE regarding PPE removal (doffing)?

  1. A Gloves are usually the last item removed
  2. B Order matters to prevent self-contamination
  3. C Masks should be removed before gloves
  4. D Eyewear is removed before the gown

Correct answer: Order matters to prevent self-contamination

Improper removal can spread contaminants. Following the correct sequence helps prevent exposure.

Question 11 of 20 Medium

Which item of PPE protects against both splatter and sharp fragments?

  1. A A surgical face mask
  2. B Eyewear with side shields
  3. C A disposable isolation gown
  4. D Latex examination gloves

Correct answer: Eyewear with side shields

Eyewear with side shields blocks splashes and debris from reaching the eyes. It is essential for procedures with flying particles.

Question 12 of 20 Medium

Face masks should be worn:

  1. A Below the nose for comfort
  2. B Snugly over the nose and mouth
  3. C Only in the waiting area
  4. D Only when a patient requests it

Correct answer: Snugly over the nose and mouth

Masks must fully cover the nose and mouth to be effective. This ensures proper filtration of respiratory droplets.

Question 13 of 20 Medium

When should protective clothing be changed?

  1. A Once per week only
  2. B When soiled or penetrated by fluids
  3. C Only at the end of the day
  4. D Every two hours regardless of use

Correct answer: When soiled or penetrated by fluids

Contaminated clothing poses an infection risk. It must be changed as soon as it becomes soiled.

Question 14 of 20 Medium

Gloves used for clinical procedures must be:

  1. A Reusable between patients
  2. B Non-sterile only
  3. C Single-use and well-fitted
  4. D Stored in open containers

Correct answer: Single-use and well-fitted

Single-use gloves prevent repeated contamination. Proper fit ensures dexterity and reduces tearing.

Question 15 of 20 Medium

Which type of PPE protects skin and clothing from contamination?

  1. A A surgical mask
  2. B A gown or apron
  3. C Protective eyewear
  4. D A hair cover cap

Correct answer: A gown or apron

Gowns act as a barrier to splashes and aerosols. They protect both the skin and underlying garments.

Question 16 of 20 Medium

Which scenario requires the use of utility gloves?

  1. A Performing intraoral procedures
  2. B Handling sterile instruments
  3. C Cleaning contaminated instruments
  4. D Typing up patient notes

Correct answer: Cleaning contaminated instruments

Utility gloves are puncture-resistant and protect against chemicals. They are required for instrument cleaning tasks.

Question 17 of 20 Medium

What is the correct action if PPE becomes contaminated during a procedure?

  1. A Continue working until the procedure ends
  2. B Remove and replace it immediately
  3. C Wipe it with a paper towel
  4. D Wait for supervisor approval to change it

Correct answer: Remove and replace it immediately

Contaminated PPE can no longer protect the wearer. Replacing it prevents cross-contamination.

Question 18 of 20 Medium

Why are cloth masks not appropriate PPE for dental procedures?

  1. A They are uncomfortable to wear
  2. B They filter clinical aerosols poorly
  3. C They are too costly to purchase
  4. D They cannot be laundered

Correct answer: They filter clinical aerosols poorly

Cloth masks do not filter small aerosolized particles effectively. Medical-grade masks or respirators are required.

Question 19 of 20 Medium

Which statement about PPE storage is TRUE?

  1. A PPE can be stored anywhere as long as it is accessible
  2. B PPE must be stored in clean, dry areas away from contamination
  3. C PPE should be kept next to contaminated instruments for convenience
  4. D PPE should be stored in patient areas

Correct answer: PPE must be stored in clean, dry areas away from contamination

Clean storage prevents contamination before use. Proper storage preserves PPE integrity.

Question 20 of 20 Medium

During patient treatment, a mask should be changed:

  1. A Every 60 minutes regardless of condition
  2. B If it becomes damp, torn, or heavily exposed
  3. C Only once per day
  4. D Only when a supervisor instructs

Correct answer: If it becomes damp, torn, or heavily exposed

A compromised mask loses effectiveness. Changing it when wet or contaminated ensures proper respiratory protection.

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