Question 1

Which of the following products is capable of killing spores in the dental office?

Accepted Answer

A)  Sporicidals
B)  Iodophors
C)  Isopropyl alcohol
D)  AmmoniaE) C) and D)
F) B) and D) A

Question 2

Precleaning can be accomplished by using:

Accepted Answer

A)  a disinfectant that cleans as well as disinfects.
B)  regular soap and water.
C)  alcohol and gauze.
D)  both a and b.E) A) and D)
F) All of the above

Question 3

After a dental treatment,the safest approach for avoiding contamination is by assuming that the surface has been contaminated with:

Accepted Answer

A)  saliva.
B)  blood.
C)  potentially infectious materials.
D)  all of the above.E) A) and C)
F) B) and C) D

Question 4

According to the EPA,synthetic phenol compounds are categorized as intermediate-level hospital disinfectants.Phenols can be used on:

Accepted Answer

A)  metal.
B)  glass.
C)  rubber or plastic.
D)  all of the above.E) C) and D)
F) All of the above

Question 5

Some of the "cons" of complex phenols include that they:

Accepted Answer

A)  are corrosive and cannot be reused.
B)  must be used on hard surfaces only.
C)  may degrade some plastics or leave etchings on glass.
D)  leave chlorine smell on surfaces.E) B) and C)
F) None of the above

Question 6

Which agency regulates and registers disinfectants and chemical sterilants according to chemical classification?

Accepted Answer

A)  OSHA
B)  FDA
C)  EPA
D)  CDCE) B) and D)
F) A) and B)

Question 7

Some microorganisms may survive on environmental surfaces for different amounts of time.________ is a concern to the dental profession since it can survive for weeks.

Accepted Answer

A)  Herpes simplex
B)  Tuberculosis
C)  None of the above
D)  Both a and bE) A) and B)
F) A) and C)

Question 8

Which of the following may be used as a surface disinfectant in the dental office?

Accepted Answer

A)  Iodophors
B)  Ethyl alcohol
C)  Isopropyl alcohol
D)  AmmoniaE) All of the above
F) B) and C) A

Question 9

To minimize surface contamination from splash,spatter,and surface droplets,the surface should be:

Accepted Answer

A)  cleaned once a week and surface barriers should be used.
B)  precleaned and disinfected between patients.
C)  wiped with alcohol.
D)  both a and b.E) B) and D)
F) B) and C)

Question 10

Recommendations regarding solutions of detergents or disinfectants include:

Accepted Answer

A)  making a fresh cleaning solution only when the previous batch is completely used up.
B)  making fresh cleaning solution each day and discarding any remaining solution.
C)  cleaning surfaces with a mist or aerosol to provide maximal coverage.
D)  preventing the container from drying, which causes brittleness.E) B) and C)
F) None of the above

Question 11

The following surfaces should typically be protected with barriers,except:

Accepted Answer

A)  head rest and control buttons on the chair.
B)  light handles, light switches, and x-ray control switches.
C)  light-curing device, drawer, and air-water syringe handles.
D)  floors and walls in the treatment room.E) B) and C)
F) A) and D)

Question 12

Before using a chemical agent,it is important to carefully read the label,since it offers important information,such as:

Accepted Answer

A)  directions for use.
B)  precautionary statements for handling the product.
C)  storage, disposal, and manufacturer's recommendations for use.
D)  all of the above.E) A) and C)
F) A) and B)

Question 13

The chemical disinfectant classified as an intermediate-level agent no longer recommended for use in dental offices is known as:

Accepted Answer

A)  glutaraldehyde.
B)  alcohol.
C)  phenols.
D)  sodium hypochlorite.E) B) and C)
F) B) and D)

Question 14

The purpose of precleaning a surface is to:

Accepted Answer

A)  to reduce the number of microbes.
B)  to remove blood, saliva, and other body fluids.
C)  both a and b.
D)  none of the above; precleaning is not necessary if you are disinfecting the surface.E) B) and D)
F) A) and B)

Question 15

Precautions that should be followed when using glutaraldehyde include:

Accepted Answer

A)  avoiding the fumes.
B)  always rinsing instruments thoroughly before using them on patients.
C)  wearing PPE to protect the eyes, skin, and lungs.
D)  all of the above.E) B) and C)
F) None of the above

Question 16

Greener infection control does not include using:

Accepted Answer

A)  traditional film-based radiography.
B)  digital radiology.
C)  only EPA-registered disinfectants.
D)  products with recyclable packaging.E) B) and C)
F) B) and D)

Question 17

_________ Blood-borne Pathogens Standards require that contaminated surfaces be disinfected between patients,even if no evidence of contamination is visible.

Accepted Answer

A)  CDC
B)  OSHA
C)  FDA
D)  None of the aboveE) All of the above
F) A) and B)

Question 18

One of the "pros" of complex phenols is that:

Accepted Answer

A)  many preparations are limited to one day of use.
B)  they may leave a residual film on treated surfaces.
C)  they are sporicidal.
D)  they are compatible with metal, glass, rubber, and plastic.E) B) and C)
F) A) and D)

Question 19

The use of surface barriers on surfaces and equipment can prevent contamination of contact areas; to make this possible surface barriers should be:

Accepted Answer

A)  removed and discarded between patients.
B)  resistant to fluids.
C)  disinfected using the spray-wipe-spray technique.
D)   both a and b.E) A) and C)
F) None of the above

Question 20

Chemicals that destroy or inactivate most species of pathogenic microorganisms on inanimate surfaces are called:

Accepted Answer

A)  disinfectants.
B)  sterilants.
C)  antiseptics.
D)  both a and c.E) All of the above
F) A) and B)

Exam 20: Principles and Techniques of Disinfection

Which of the following products is capable of killing spores in the dental office?

Correct AnswerverifiedA

Precleaning can be accomplished by using:

Correct AnswerverifiedShow Answer

After a dental treatment,the safest approach for avoiding contamination is by assuming that the surface has been contaminated with:

Correct AnswerverifiedD

According to the EPA,synthetic phenol compounds are categorized as intermediate-level hospital disinfectants.Phenols can be used on:

Correct AnswerverifiedShow Answer

Some of the "cons" of complex phenols include that they:

Correct AnswerverifiedShow Answer

Which agency regulates and registers disinfectants and chemical sterilants according to chemical classification?

Correct AnswerverifiedShow Answer

Some microorganisms may survive on environmental surfaces for different amounts of time.________ is a concern to the dental profession since it can survive for weeks.

Correct AnswerverifiedShow Answer

Which of the following may be used as a surface disinfectant in the dental office?

Correct AnswerverifiedA

To minimize surface contamination from splash,spatter,and surface droplets,the surface should be:

Correct AnswerverifiedShow Answer

Recommendations regarding solutions of detergents or disinfectants include:

Correct AnswerverifiedShow Answer

The following surfaces should typically be protected with barriers,except:

Correct AnswerverifiedShow Answer

Before using a chemical agent,it is important to carefully read the label,since it offers important information,such as:

Correct AnswerverifiedShow Answer

The chemical disinfectant classified as an intermediate-level agent no longer recommended for use in dental offices is known as:

Correct AnswerverifiedShow Answer

The purpose of precleaning a surface is to:

Correct AnswerverifiedShow Answer

Precautions that should be followed when using glutaraldehyde include:

Correct AnswerverifiedShow Answer

Greener infection control does not include using:

Correct AnswerverifiedShow Answer

_________ Blood-borne Pathogens Standards require that contaminated surfaces be disinfected between patients,even if no evidence of contamination is visible.

Correct AnswerverifiedShow Answer

One of the "pros" of complex phenols is that:

Correct AnswerverifiedShow Answer

The use of surface barriers on surfaces and equipment can prevent contamination of contact areas; to make this possible surface barriers should be:

Correct AnswerverifiedShow Answer

Chemicals that destroy or inactivate most species of pathogenic microorganisms on inanimate surfaces are called:

Correct AnswerverifiedShow Answer

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