DH 199
Dental Hygiene
Preclinical Review
Exam
Q&A
2024
,1. Which of the following is an example of personal protective equipment
(PPE) commonly used in a dental clinic?
A. Scrubs
B. Face mask
C. Safety glasses
D. All of the above
Answer: D. All of the above
Rationale: Personal protective equipment (PPE) in a dental clinic includes
scrubs, face masks, safety glasses, gloves, and protective clothing.
2. What is the correct procedure for handling contaminated instruments in
the dental clinic?
A. Rinse them with water
B. Place them in a covered container
C. Dispose of them in the regular trash
D. None of the above
Answer: B. Place them in a covered container
Rationale: Contaminated instruments should be handled carefully and
placed in a covered container to prevent the spread of infection.
3. Which of the following is an example of a biohazardous waste?
A. Paper towels
B. Blood-soaked gauze
C. Plastic packaging
D. None of the above
Answer: B. Blood-soaked gauze
Rationale: Biohazardous waste includes any materials contaminated with
blood or other potentially infectious materials.
4. How should dental assistants properly clean and disinfect treatment
rooms between patients?
A. Wipe surfaces with a damp cloth
B. Use an EPA-approved disinfectant
C. Spray with water
D. None of the above
Answer: B. Use an EPA-approved disinfectant
Rationale: Treatment rooms should be cleaned and disinfected between
patients using an EPA-approved disinfectant to prevent the spread of
, infection.
5. Which of the following is an example of an engineering control used in
a dental clinic?
A. Hand hygiene
B. Sharps container
C. Face shield
D. None of the above
Answer: B. Sharps container
Rationale: Engineering controls are physical devices or barriers used to
prevent exposure to hazards, such as sharps containers for disposing of
needles and other sharp objects.
6. What is the proper technique for transferring instruments to the dental
provider during a procedure?
A. Hand them directly
B. Place them on a tray
C. Throw them across the room
D. None of the above
Answer: A. Hand them directly
Rationale: Instruments should be handed directly to the dental provider to
ensure safe and efficient delivery during a procedure.
7. How should dental assistants handle hazardous chemicals in the dental
clinic?
A. Store them in unlabeled containers
B. Wear gloves and eye protection
C. Mix them together for convenience
D. None of the above
Answer: B. Wear gloves and eye protection
Rationale: Hazardous chemicals should be handled with care, and dental
assistants should wear appropriate PPE, such as gloves and eye protection,
when working with them.
8. What is the proper technique for lifting heavy equipment in the dental
clinic?
A. Bend at the waist
B. Lift with your back
Dental Hygiene
Preclinical Review
Exam
Q&A
2024
,1. Which of the following is an example of personal protective equipment
(PPE) commonly used in a dental clinic?
A. Scrubs
B. Face mask
C. Safety glasses
D. All of the above
Answer: D. All of the above
Rationale: Personal protective equipment (PPE) in a dental clinic includes
scrubs, face masks, safety glasses, gloves, and protective clothing.
2. What is the correct procedure for handling contaminated instruments in
the dental clinic?
A. Rinse them with water
B. Place them in a covered container
C. Dispose of them in the regular trash
D. None of the above
Answer: B. Place them in a covered container
Rationale: Contaminated instruments should be handled carefully and
placed in a covered container to prevent the spread of infection.
3. Which of the following is an example of a biohazardous waste?
A. Paper towels
B. Blood-soaked gauze
C. Plastic packaging
D. None of the above
Answer: B. Blood-soaked gauze
Rationale: Biohazardous waste includes any materials contaminated with
blood or other potentially infectious materials.
4. How should dental assistants properly clean and disinfect treatment
rooms between patients?
A. Wipe surfaces with a damp cloth
B. Use an EPA-approved disinfectant
C. Spray with water
D. None of the above
Answer: B. Use an EPA-approved disinfectant
Rationale: Treatment rooms should be cleaned and disinfected between
patients using an EPA-approved disinfectant to prevent the spread of
, infection.
5. Which of the following is an example of an engineering control used in
a dental clinic?
A. Hand hygiene
B. Sharps container
C. Face shield
D. None of the above
Answer: B. Sharps container
Rationale: Engineering controls are physical devices or barriers used to
prevent exposure to hazards, such as sharps containers for disposing of
needles and other sharp objects.
6. What is the proper technique for transferring instruments to the dental
provider during a procedure?
A. Hand them directly
B. Place them on a tray
C. Throw them across the room
D. None of the above
Answer: A. Hand them directly
Rationale: Instruments should be handed directly to the dental provider to
ensure safe and efficient delivery during a procedure.
7. How should dental assistants handle hazardous chemicals in the dental
clinic?
A. Store them in unlabeled containers
B. Wear gloves and eye protection
C. Mix them together for convenience
D. None of the above
Answer: B. Wear gloves and eye protection
Rationale: Hazardous chemicals should be handled with care, and dental
assistants should wear appropriate PPE, such as gloves and eye protection,
when working with them.
8. What is the proper technique for lifting heavy equipment in the dental
clinic?
A. Bend at the waist
B. Lift with your back
