NBDHE MANAGEMENT OF DENTAL
HYGIENE CARE EXAM QUESTIONS &
ACTUAL CORRECT ANSWERS
Which agency is responsible for regulations of medical and chemical waste? - Correct
Answer ✔✔ environmental protection agency
which agency is responsible for infection prevention in dentistry such as PPE, eye
safety, protective clothing, sharps and containers, sharps injury prevention? - Correct
Answer ✔✔ national institute for occupational safety and health
what is regulated waste - Correct Answer ✔✔ medical waste that has the potential for
disease transmission.
sharps
tissue and extracted teeth
blood
what is non-regulated waste? - Correct Answer ✔✔ waste that is safely disposable
gloves
saliva ejetors
cups
what are the routes of disease-organisms transmission - Correct Answer ✔✔ direct
contact
indirect contact with contaminated objects
contact of nasal, eye, or oral
inhalation of airborne microorganisms
What are the 5 conditions that make up disease-organism transmission - Correct
Answer ✔✔ -a pathogenic organism of sufficient virulence that can cause disease
-a reservoir or source (blood)
-mode of transmission from source to host
-portal of entry through where the pathogen enters host
-susceptible host (one who is not immune)
what order should you dawn PPE? - Correct Answer ✔✔ gown, mask, glasses gloves
Why is hand hygiene so important - Correct Answer ✔✔ it is the most important
behavior in the prevention of disease transmission
give an example of a high level surface disinfectant - Correct Answer ✔✔
glutaraldehyde
, high level: destroys all microorganisms, but may not destroy bacterial spores
give an example of intermediate level surface disinfectant - Correct Answer ✔✔
chlorine-containing, iodophors, phenolics
intermediate destroys vegetative bacteria, most fungi and viruses
give an example of low level surface disinfectant - Correct Answer ✔✔ destroys
vegetative bacteria some fungi and viruses
NOT tuberculocidal
example: detergents
list the qualities of an ideal disinfectant - Correct Answer ✔✔ broad spectrum
fast acting
does not have an offensive odor
reasonable cost
substantivity
compatible with equipment and surfaces
good penetrating and cleaning ability
what does sterilization destroy? - Correct Answer ✔✔ ALL living organisms and highly
resistant bacterial spores
steam autoclave temperature, time, advantages and disadvantages - Correct Answer
✔✔ temp: 250*F
time:15-30 min
advantages: economical effecitient
disadvantages: corrosion
Dry heat temperature, time, advantages and disadvantages
(static air, forced air) - Correct Answer ✔✔ temp: 320
time: 15-20 min
advantages no corrosion
chemical vapor temperature, time, advantages and disadvantages - Correct Answer ✔✔
temp: 270
time: 20 min
advantages: time efficient, decreased corrosion
disadvantages: special solution, slight odor
forced air (convection) - Correct Answer ✔✔ temp: 375
time: 12 min
advantages: time efficient does not dull cutting edges
disadvantages: may damage plastic and rubber items
HYGIENE CARE EXAM QUESTIONS &
ACTUAL CORRECT ANSWERS
Which agency is responsible for regulations of medical and chemical waste? - Correct
Answer ✔✔ environmental protection agency
which agency is responsible for infection prevention in dentistry such as PPE, eye
safety, protective clothing, sharps and containers, sharps injury prevention? - Correct
Answer ✔✔ national institute for occupational safety and health
what is regulated waste - Correct Answer ✔✔ medical waste that has the potential for
disease transmission.
sharps
tissue and extracted teeth
blood
what is non-regulated waste? - Correct Answer ✔✔ waste that is safely disposable
gloves
saliva ejetors
cups
what are the routes of disease-organisms transmission - Correct Answer ✔✔ direct
contact
indirect contact with contaminated objects
contact of nasal, eye, or oral
inhalation of airborne microorganisms
What are the 5 conditions that make up disease-organism transmission - Correct
Answer ✔✔ -a pathogenic organism of sufficient virulence that can cause disease
-a reservoir or source (blood)
-mode of transmission from source to host
-portal of entry through where the pathogen enters host
-susceptible host (one who is not immune)
what order should you dawn PPE? - Correct Answer ✔✔ gown, mask, glasses gloves
Why is hand hygiene so important - Correct Answer ✔✔ it is the most important
behavior in the prevention of disease transmission
give an example of a high level surface disinfectant - Correct Answer ✔✔
glutaraldehyde
, high level: destroys all microorganisms, but may not destroy bacterial spores
give an example of intermediate level surface disinfectant - Correct Answer ✔✔
chlorine-containing, iodophors, phenolics
intermediate destroys vegetative bacteria, most fungi and viruses
give an example of low level surface disinfectant - Correct Answer ✔✔ destroys
vegetative bacteria some fungi and viruses
NOT tuberculocidal
example: detergents
list the qualities of an ideal disinfectant - Correct Answer ✔✔ broad spectrum
fast acting
does not have an offensive odor
reasonable cost
substantivity
compatible with equipment and surfaces
good penetrating and cleaning ability
what does sterilization destroy? - Correct Answer ✔✔ ALL living organisms and highly
resistant bacterial spores
steam autoclave temperature, time, advantages and disadvantages - Correct Answer
✔✔ temp: 250*F
time:15-30 min
advantages: economical effecitient
disadvantages: corrosion
Dry heat temperature, time, advantages and disadvantages
(static air, forced air) - Correct Answer ✔✔ temp: 320
time: 15-20 min
advantages no corrosion
chemical vapor temperature, time, advantages and disadvantages - Correct Answer ✔✔
temp: 270
time: 20 min
advantages: time efficient, decreased corrosion
disadvantages: special solution, slight odor
forced air (convection) - Correct Answer ✔✔ temp: 375
time: 12 min
advantages: time efficient does not dull cutting edges
disadvantages: may damage plastic and rubber items
