Question 1

What should be done with the leftover polishing agents, such as rouge, after an appliance is polished?

Accepted Answer

A) Place it in a cup and run a slow stream of water into the cup to rinse the material. 
B) Spread the material out in a pan and steam sterilize it. 
C) Let it air-dry overnight and return it the central bulk stock. 
D) Throw it away. 
A) Place it in a cup and run a slow stream of water into the cup to rinse the material. 
B) Spread the material out in a pan and steam sterilize it. 
C) Let it air-dry overnight and return it the central bulk stock. 
D) Throw it away. D

Question 2

How should one decontaminate impressions that are distorted if submerged in a liquid?

Accepted Answer

A) Spray with a disinfectant and wrapped with a towel moistened with the same disinfectant. 
B) Rinse under running tap water. 
C) Process through a steam sterilizer. 
D) Wrap in a towel saturated with a non-antimicrobial soap and rinsed. 
A) Spray with a disinfectant and wrapped with a towel moistened with the same disinfectant. 
B) Rinse under running tap water. 
C) Process through a steam sterilizer. 
D) Wrap in a towel saturated with a non-antimicrobial soap and rinsed. A

Question 3

Which of the following laboratory items can always be cleaned and heat sterilized?

Accepted Answer

A) Impressions 
B) Prostheses 
C) Bite registrations 
D) Metal impression trays and face-bow forks 
A) Impressions 
B) Prostheses 
C) Bite registrations 
D) Metal impression trays and face-bow forks D

Question 4

Which of the following cannot be disinfected?

Accepted Answer

A) Inside the sleeves of a daylight loader 
B) The handle of an x-ray unit head 
C) An impression 
D) A denture 
A) Inside the sleeves of a daylight loader 
B) The handle of an x-ray unit head 
C) An impression 
D) A denture

Question 5

Which of the following is the best way to manage contamination of a daylight loader?

Accepted Answer

A) Disinfect the insides of the sleeves after every use. 
B) Remove the sleeves after every use and sterilize them in a steam autoclave. 
C) Never contaminate the sleeves. 
D) Always wear the same gloves used with the patient when you enter the sleeves of the loader, because this prevents wasting gloves. 
A) Disinfect the insides of the sleeves after every use. 
B) Remove the sleeves after every use and sterilize them in a steam autoclave. 
C) Never contaminate the sleeves. 
D) Always wear the same gloves used with the patient when you enter the sleeves of the loader, because this prevents wasting gloves.

Question 6

Although some x-ray film packets can be disinfected after removal from the patient's mouth, it is best to:

Accepted Answer

A) steam sterilize them. 
B) place them in boiling water for 5 minutes. 
C) rinse them under running tap water. 
D) cover them with a plastic pouch before they are placed in the patient's mouth. 
A) steam sterilize them. 
B) place them in boiling water for 5 minutes. 
C) rinse them under running tap water. 
D) cover them with a plastic pouch before they are placed in the patient's mouth.

Question 7

Impressions that are sensitive to immersion should be rinsed, shaken to remove excess water, and then:

Accepted Answer

A) steam sterilized. 
B) sprayed with a disinfectant and wrapped in a paper towel. 
C) rinsed for 5 minutes with hot tap water. 
D) boiled in water for 30 minutes. 
A) steam sterilized. 
B) sprayed with a disinfectant and wrapped in a paper towel. 
C) rinsed for 5 minutes with hot tap water. 
D) boiled in water for 30 minutes.

Question 8

What is the best way to clean a heavily soiled denture?

Accepted Answer

A) Place in a beaker under running tap water for 15 minutes. 
B) Submerge in boiling water for 15 minutes. 
C) Place in a zip-locked plastic bag or beaker containing an ultrasonic detergent and clean it ultrasonically. 
D) Use a shell blaster. 
A) Place in a beaker under running tap water for 15 minutes. 
B) Submerge in boiling water for 15 minutes. 
C) Place in a zip-locked plastic bag or beaker containing an ultrasonic detergent and clean it ultrasonically. 
D) Use a shell blaster.

Question 9

The main rule of laboratory asepsis is that prostheses and appliances must be _____ before being handled in the laboratory.

Accepted Answer

A) heat sterilized 
B) cleaned 
C) rinsed with warm water 
D) cleaned and disinfected 
A) heat sterilized 
B) cleaned 
C) rinsed with warm water 
D) cleaned and disinfected

Question 10

What should be done to decontaminate items that do not normally contact the patient (e.g., burs, stones, polishing points, case pans)?

Accepted Answer

A) Rinse with warm water and dry. 
B) Always sterilize in a dry heat sterilizer. 
C) Clean and heat sterilize or disinfect according to the manufacturer's directions. 
D) Ultrasonically clean, rinse, and dry. 
A) Rinse with warm water and dry. 
B) Always sterilize in a dry heat sterilizer. 
C) Clean and heat sterilize or disinfect according to the manufacturer's directions. 
D) Ultrasonically clean, rinse, and dry.

Question 11

Before sending a prosthesis to a dental laboratory, the prosthesis should be:

Accepted Answer

A) sterilized in a steam autoclave. 
B) rinsed in water. 
C) scrubbed with a nonantimicrobial hand washing agent. 
D) cleaned, disinfected, and rinsed. 
A) sterilized in a steam autoclave. 
B) rinsed in water. 
C) scrubbed with a nonantimicrobial hand washing agent. 
D) cleaned, disinfected, and rinsed.

Question 12

The best way to manage films in a daylight loader is to:

Accepted Answer

A) use fresh powdered gloves to hold the contaminated film packets when inserting the hands through the sleeves; when inside, remove the plastic protective pouches and proceed with developing. 
B) insert only disinfected or uncontaminated film packets into the loader using fresh uncontaminated powder-free gloves, and proceed with developing. 
C) put on fresh gloves, take the film packets out of the protective plastic pouches, pass them through to the inside of the loader, remove the film from the packets, and proceed with developing. 
D) with bare hands (so as not to contaminate the loader sleeves), remove the contaminated protective pouches, pass the film packets through the sleeves, open the packets, and proceed with developing. 
A) use fresh powdered gloves to hold the contaminated film packets when inserting the hands through the sleeves; when inside, remove the plastic protective pouches and proceed with developing. 
B) insert only disinfected or uncontaminated film packets into the loader using fresh uncontaminated powder-free gloves, and proceed with developing. 
C) put on fresh gloves, take the film packets out of the protective plastic pouches, pass them through to the inside of the loader, remove the film from the packets, and proceed with developing. 
D) with bare hands (so as not to contaminate the loader sleeves), remove the contaminated protective pouches, pass the film packets through the sleeves, open the packets, and proceed with developing.

Question 13

How should one manage the infection control of most digital radiographic sensors?

Accepted Answer

A) Heat sterilize them between patients. 
B) Cover them to prevent contamination when placed in the mouth. 
C) Soak them for 60 minutes in a liquid sterilant and then thoroughly rinse between patients. 
D) Rinse them with warm water between patients. 
A) Heat sterilize them between patients. 
B) Cover them to prevent contamination when placed in the mouth. 
C) Soak them for 60 minutes in a liquid sterilant and then thoroughly rinse between patients. 
D) Rinse them with warm water between patients.

Question 14

What is the main infection control tenet concerning laboratory receiving areas?

Accepted Answer

A) Always wear fresh heavy utility gloves when entering the laboratory. 
B) Never wear contaminated clothing into the laboratory. 
C) All items coming from patients' mouths must be sterilized or disinfected before being taken into the laboratory. 
D) Place prostheses and impressions in sterile containers before taking them into the laboratory. 
A) Always wear fresh heavy utility gloves when entering the laboratory. 
B) Never wear contaminated clothing into the laboratory. 
C) All items coming from patients' mouths must be sterilized or disinfected before being taken into the laboratory. 
D) Place prostheses and impressions in sterile containers before taking them into the laboratory.

Question 15

Disinfection of dental impressions should last _____ minutes.

Accepted Answer

A) 5 
B) 15 
C) 30 
D) 60 
A) 5 
B) 15 
C) 30 
D) 60

Question 16

How should one disinfect an impression that is sensitive to immersion?

Accepted Answer

A) Steam sterilize it. 
B) Dry heat sterilize it. 
C) Spray it with the disinfectant and wrap with a disinfectant-soaked towel. 
D) Brush it with a liquid sterilant. 
A) Steam sterilize it. 
B) Dry heat sterilize it. 
C) Spray it with the disinfectant and wrap with a disinfectant-soaked towel. 
D) Brush it with a liquid sterilant.

Exam 16: Laboratory and Radiographic Asepsis

What should be done with the leftover polishing agents, such as rouge, after an appliance is polished?

How should one decontaminate impressions that are distorted if submerged in a liquid?

Which of the following laboratory items can always be cleaned and heat sterilized?

Which of the following cannot be disinfected?

Which of the following is the best way to manage contamination of a daylight loader?

Although some x-ray film packets can be disinfected after removal from the patient's mouth, it is best to:

Impressions that are sensitive to immersion should be rinsed, shaken to remove excess water, and then:

What is the best way to clean a heavily soiled denture?

The main rule of laboratory asepsis is that prostheses and appliances must be _____ before being handled in the laboratory.

What should be done to decontaminate items that do not normally contact the patient (e.g., burs, stones, polishing points, case pans)?

Before sending a prosthesis to a dental laboratory, the prosthesis should be:

The best way to manage films in a daylight loader is to:

How should one manage the infection control of most digital radiographic sensors?

What is the main infection control tenet concerning laboratory receiving areas?

Disinfection of dental impressions should last _____ minutes.

How should one disinfect an impression that is sensitive to immersion?

Scope of Microbiology and Infection Control

Characteristics of Microorganisms

Development of Infectious Diseases

Emerging Diseases

Oral Microbiology and Plaque-Associated Diseases

Bloodborne Pathogens

Oral and Respiratory Diseases

Infection Control Rationale and Regulations

Immunization

Hand Hygiene

Personal Protective Equipment

Instrument Processing

Surface and Equipment Asepsis

Dental Unit Water Asepsis and Air Quality

Aseptic Techniques

Waste Management

Preventing Sharps Injuries

A Clinical Asepsis Protocol

General Office Safety and Asepsis

Greener Infection Control

Cross-Contamination Between Work and Home

About the Occupational Safety and Health Administration

Osha Inspections

Management of the Office Safety Program

Managing Chemicals Safely

Employee Fire Prevention and Emergency Action Plans

Infection Control Concerns During Remodeling or Construction

Filters