Question 1

The use of barriers on surfaces and equipment can prevent contamination of contact areas.The correct protocol for their use would include:

Accepted Answer

A) removing and discarding with gloved hands, and replacing using clean gloves between patients. 
B) using a barrier resistant to fluids. 
C) disinfecting each barrier using the spray-wipe-spray technique. 
D) both a and b 
A) removing and discarding with gloved hands, and replacing using clean gloves between patients. 
B) using a barrier resistant to fluids. 
C) disinfecting each barrier using the spray-wipe-spray technique. 
D) both a and b

Question 2

One of the benefits of using a complex phenol solution for disinfection is that they:

Accepted Answer

A) are limited to one day of use. 
B) leave a residual film on treated surfaces increasing the disinfection benefit. 
C) are sporicidal. 
D) are compatible with metal, glass, rubber, and plastic. 
A) are limited to one day of use. 
B) leave a residual film on treated surfaces increasing the disinfection benefit. 
C) are sporicidal. 
D) are compatible with metal, glass, rubber, and plastic.

Question 3

One difference between a disinfectant and sterilant is:

Accepted Answer

A) a disinfectant kills disease-causing microorganisms remaining on surfaces after precleaning. 
B) a disinfectant destroys all microorganisms. 
C) a disinfectant is destroys all spores and fungi. 
D) both a and b 
A) a disinfectant kills disease-causing microorganisms remaining on surfaces after precleaning. 
B) a disinfectant destroys all microorganisms. 
C) a disinfectant is destroys all spores and fungi. 
D) both a and b

Question 4

Carpet in dental treatment areas:

Accepted Answer

A) is as easy to clean as nonporous hard-surface flooring. 
B) can be disinfected. 
C) harbors bacteria but not fungi. 
D) harbors both bacteria and fungi. 
A) is as easy to clean as nonporous hard-surface flooring. 
B) can be disinfected. 
C) harbors bacteria but not fungi. 
D) harbors both bacteria and fungi.

Question 5

If the surface below the barrier is inadvertently touched when removing a contaminated barrier,the protocol to follow indicates:

Accepted Answer

A) the surface does not have to be cleaned and disinfected. 
B) the surface needs to be cleaned and disinfected. 
C) all treatment room surfaces need to be cleaned and disinfected. 
D) a double layer of protective material needs to be placed over the contaminated surface. 
A) the surface does not have to be cleaned and disinfected. 
B) the surface needs to be cleaned and disinfected. 
C) all treatment room surfaces need to be cleaned and disinfected. 
D) a double layer of protective material needs to be placed over the contaminated surface.

Question 6

The chemical disinfectant classified as an intermediate-level agent that is no longer recommended for use in dentistry is:

Accepted Answer

A) glutaraldehyde. 
B) alcohol. 
C) phenols. 
D) sodium hypochlorite. 
A) glutaraldehyde. 
B) alcohol. 
C) phenols. 
D) sodium hypochlorite.

Question 7

The purpose of precleaning a surface is:

Accepted Answer

A) to reduce the number of microbes. 
B) to remove accumulated blood, saliva, and other body fluids. 
C) do both a and b 
D) none of the above; precleaning is not necessary when a surface is to be disinfected. 
A) to reduce the number of microbes. 
B) to remove accumulated blood, saliva, and other body fluids. 
C) do both a and b 
D) none of the above; precleaning is not necessary when a surface is to be disinfected.

Question 8

Precautions when using glutaraldehyde include:

Accepted Answer

A) avoid inhaling the fumes. 
B) always rinse instruments thoroughly prior to any intraoral use. 
C) wear PPE to protect the eyes, skin, and lungs. 
D) all of the above. 
A) avoid inhaling the fumes. 
B) always rinse instruments thoroughly prior to any intraoral use. 
C) wear PPE to protect the eyes, skin, and lungs. 
D) all of the above.

Question 9

The agency responsible for the Bloodborne Pathogens Standards that requires contaminated surfaces to be disinfected between patients,even if no evidence of contamination is visible is:

Accepted Answer

A) the CDC. 
B) OSHA. 
C) the FDA. 
D) none of the above. 
A) the CDC. 
B) OSHA. 
C) the FDA. 
D) none of the above.

Question 10

Which of the following can be used as a surface disinfectant in the dentistry?

Accepted Answer

A) Iodophors 
B) Ethyl alcohol 
C) Isopropyl alcohol 
D) Ammonia 
A) Iodophors 
B) Ethyl alcohol 
C) Isopropyl alcohol 
D) Ammonia

Question 11

A product capable of killing a virus should be labeled:

Accepted Answer

A) fungicidal. 
B) sporicidal. 
C) tuberculocidal. 
D) virucidal. 
A) fungicidal. 
B) sporicidal. 
C) tuberculocidal. 
D) virucidal.

Question 12

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 
A) disinfectants. 
B) sterilants. 
C) antiseptics. 
D) both a and c

Question 13

The following are considered single-use items except:

Accepted Answer

A) patient napkins. 
B) plastic orthodontic brackets. 
C) metal impression trays. 
D) irrigating syringes. 
A) patient napkins. 
B) plastic orthodontic brackets. 
C) metal impression trays. 
D) irrigating syringes.

Question 14

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. 
A) metal. 
B) glass. 
C) rubber or plastic. 
D) all of the above.

Question 15

The appropriate disinfection protocol to follow when a surface has been covered with a barrier is:

Accepted Answer

A) none. It does not have to be cleaned or disinfected. 
B) clean and disinfect the surface at the beginning of the workday. 
C) clean and disinfect the surface at the end of the workday. 
D) clean and disinfect the surface at the beginning and end of each workday. 
A) none. It does not have to be cleaned or disinfected. 
B) clean and disinfect the surface at the beginning of the workday. 
C) clean and disinfect the surface at the end of the workday. 
D) clean and disinfect the surface at the beginning and end of each workday.

Question 16

Some microorganisms may survive on outside the host on environmental surfaces.The organism of concern to dentistry that can survive five weeks outside the host is:

Accepted Answer

A) herpes simplex. 
B) tuberculosis. 
C) none of the above. 
D) both a and b 
A) herpes simplex. 
B) tuberculosis. 
C) none of the above. 
D) both a and b

Question 17

The protocol to follow to minimize contamination of touch and transfer surfaces from splash,spatter,and surface droplets is to:

Accepted Answer

A) preclean and disinfect the surfaces after each use with soap, water, and alcohol. 
B) use a liquid sterilant weekly. 
C) apply an acceptable barrier following precleaning and disinfection. 
D) apply, remove, and reapply surface barriers with clean hands. 
A) preclean and disinfect the surfaces after each use with soap, water, and alcohol. 
B) use a liquid sterilant weekly. 
C) apply an acceptable barrier following precleaning and disinfection. 
D) apply, remove, and reapply surface barriers with clean hands.

Question 18

All of the following surfaces should be protected from contamination 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) counter tops in the reception area. 
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) counter tops in the reception area.

Exam 20: Principles and Techniques of Disinfection

The use of barriers on surfaces and equipment can prevent contamination of contact areas.The correct protocol for their use would include:

One of the benefits of using a complex phenol solution for disinfection is that they:

One difference between a disinfectant and sterilant is:

Carpet in dental treatment areas:

If the surface below the barrier is inadvertently touched when removing a contaminated barrier,the protocol to follow indicates:

The chemical disinfectant classified as an intermediate-level agent that is no longer recommended for use in dentistry is:

The purpose of precleaning a surface is:

Precautions when using glutaraldehyde include:

The agency responsible for the Bloodborne Pathogens Standards that requires contaminated surfaces to be disinfected between patients,even if no evidence of contamination is visible is:

Which of the following can be used as a surface disinfectant in the dentistry?

A product capable of killing a virus should be labeled:

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

The following are considered single-use items except:

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

The appropriate disinfection protocol to follow when a surface has been covered with a barrier is:

Some microorganisms may survive on outside the host on environmental surfaces.The organism of concern to dentistry that can survive five weeks outside the host is:

The protocol to follow to minimize contamination of touch and transfer surfaces from splash,spatter,and surface droplets is to:

All of the following surfaces should be protected from contamination with barriers except:

History of Dentistry

The Professional Dental Assistant

The Dental Healthcare Team

Dental Ethics

Dentistry and the Law

General Anatomy

General Physiology

Oral Embryology and Histology

Head and Neck Anatomy

Landmarks of the Face and Oral Cavity

Overview of the Dentitions

Tooth Morphology

Dental Caries

Periodontal Disease

Preventive Dentistry

Nutrition

Oral Pathology

Microbiology

Disease Transmission and Infection Prevention

Principles and Techniques of Instrument Processing and Sterilization

Regulatory and Advisory Agencies

Chemical and Waste Management

Dental Unit Waterlines

Ergonomics

The Patient Record

Vital Signs

Oral Diagnosis and Treatment Planning

The Special Needs and Medically Compromised Patient

Principles of Pharmacology

Assisting in a Medical Emergency

The Dental Office

Delivering Dental Care

Dental Hand Instruments

Dental Handpieces and Accessories

Moisture Control

Anesthesia and Pain Control

Foundations of Radiography, Radiographic Equipment, and Radiation Safety

Digital Imaging, Dental Film, and Processing Radiographs

Legal Issues, Quality Assurance, and Infection Prevention

Intraoral Imaging

Extraoral Imaging

Restorative and Esthetic Dental Materials

Dental Liners, Bases, and Bonding Systems

Dental Cements

Impression Materials

Laboratory Materials and Procedures

General Dentistry

Matrix Systems for Restorative Dentistry

Fixed Prosthodontics

Provisional Coverage

Removable Prosthodontics

Dental Implants

Endodontics

Periodontics

Oral and Maxillofacial Surgery

Pediatric Dentistry

Coronal Polishing

Dental Sealants

Orthodontics

Communication in the Dental Office

Business Operating Systems