Questions and Answers| Latest Update
Which of the following incidents is not considered an exposure incident?
a. splash of blood onto chapped or abraded skin
b. puncture with a contaminated needle or instrument
c. spatter of blood or saliva into the eyes
d. puncture with a needle before injection d. puncture with a needle before injection
Which activity is contraindicated during the use of nitrous oxide in conscious sedation?
a. maintain a conversation with a patient
b. use a dental dam when applicable
c. use a scavenger system
d. secure the patient's mask a. maintain a conversation with a patient
The CDC recommends that dental office sterilizers be biologically monitored how frequently?
a. weekly
b. biweekly
c. monthly
d. bimonthly a. weekly
In 2013, the new OSHA Hazard Communication Standard introduced new hazard symbols to be
included on Safety Data Sheets and product labels. These include diagrams that represent certain
health or physical hazards and are called:
a. icons
b. warnings
c. images
d. pictograms d. pictograms
,Which of the following types of tissue(s) can be damaged by failure to use proper ergonomic
techniques?
a. muscles
b. joints
c. tendons
d. all of the above d. all of the above
What is the term for a type of waste material that is capable of having a poisonous effect?
a. contaminated waste
b. medical waste
c. toxic waste
d. regulated waste c. toxic waste
How should instruments with hinges (eg scissors, forceps, pliers) be positioned in the sterilizer?
a. hinged instruments should be positioned with the hinges open
b. hinged instruments should be positioned with the hinges closed
c. either of the above is acceptable because the steam or chemical vapor will penetrate the hinged
areas
d. wipe hinged are of instrument with a high level disinfectant before placing in the sterilizer
a. hinged instruments should be positioned with the hinges open
Which of the following errors will not result in a failure of sterilization?
a. improper loading
b. inadequate time
c. faulty seals on the chamber door
d. failure to use a process indicator d. failure to use a process indicator
, Which of the following are methods by which dental personnel can be exposed to infectious
diseases?
a. direct contact with blood and saliva
b. indirect contact with contaminated instruments
c. aerosol, spatter, and splashes in the eyes or mouth
d. all of the above d. all of the above
Redness and irritation of the hands of dental professionals can be caused by:
a. allergy to latex gloves
b. not thoroughly drying hands after washing
c. sensitivity to chemicals used in the production of the gloves
d. All of the conditions above d. all of the conditions above
An instrument that touches the mucous membranes but will not penetrate soft tissue or touch
bone is classified as:
a. critical
b. semi critical
c. noncritical
d. both critical and semicritical b. semicritical
Which of the following disinfectants tend to cause a reddish or yellow stain?
a. alcohol
b. phenol
c. bleach
d. iodophors d. iodophors
What is the preferred method of cleaning contaminated instruments before sterilization?
a. placing the instruments in the ultrasonic cleaner