Chapter 20& 21 Test

For sterilization to occur using an immersion disinfectant, items must be immersed for a minimum of _____ hours.

6 hours

The best way to determine whether sterilization has occurred is to use: A. biologic monitors B. process integrators C. process indicators D. color-changing sterilization bags or tape.

A. Biologic monitors

Microorganisms in a steam sterilizer are killed by: A. heat. B. pressure. C. lack of oxygen. D. water vapor.

A. HEAT

Which of the following statements is true regarding the seven steps for instrument processing? A. Sterilization takes places prior to storage. B. Packaging takes place following sterilization. C. Storage takes place prior to packaging. D. Storage takes place following delivery

A. Sterilization takes places prior to storage.

The minimum frequency recommended by the CDC, ADA, and OSAP for biologic monitoring of all sterilizing equipment is: A. weekly B. monthly. C. bi-weekly. D. daily. E. yearly

A. WEEKLY

A monitoring service will immediately communicate a failure of sterilization through: A. a telephone call or FAX to the dental office, reporting a positive result. B. mailing a notice to the dental office to document that the cultures were read as a negative result. C. in the monthly notification report

A. a telephone call or FAX to the dental office, reporting a positive result.

Sterilization destroys: A. all microbial forms, including bacterial spores B. all microbial forms, except bacterial spores C. bacteria, including bacterial spores and viruses but not fungi. D. bacteria, including bacterial spores and fungi but not viruses.

A. all microbial forms, including bacterial spores

Ultrasonic cleaners are used to: A. both loosen and remove debris from instruments. AND reduce risk of hand injury from cuts and punctures that can occur with hand scrubbing. B. reduce risk of hand injury from cuts and punctures that can occur with hand scrubbing C. disinfect instruments D. loosen and remove debris from instruments.

A. both loosen and remove debris from instruments. AND reduce risk of hand injury from cuts and punctures that can occur with hand scrubbing.

Instrument processing should flow in a single loop from dirty, to _______, to storage. A. clean, to sterile B. sterile C. preclean, to clean D. preclean, to clean, to sterile

A. clean, to sterile

Dried blood remaining on dental instruments following a treatment procedure is due to improper: A. cleaning of dental instruments B. loading of packages into the sterilizer C. timing of the sterilization cycle D. packaging of dental instruments

A. cleaning of dental instruments

Instruments used to penetrate soft tissue or bone are termed _________ instruments. A. critical B. All of the above are correct C. semicritical D. noncritical

A. critical

The ideal instrument-processing area should be A. dedicated only to instrument processing. B. large enough for several assistants to work at one time. C. part of the treatment areas and dental laboratory. D. open to the outside through a door or windows.

A. dedicated only to instrument processing.

Which is used to kill disease-causing microorganisms that remain on the surface after precleaning? A. disinfectant B. antiseptic C. antimicrobial D. sterilizer

A. disinfectant

Process indicators that change color are useful for: A. identifying instrument packs that have been exposed to a certain temperature B. biologic monitoring of sterilization C. proving that all bacteria have been killed verifying that all endospores are not viable

A. identifying instrument packs that have been exposed to a certain temperature

The major advantage of the chemical vapor sterilizer is that: A. it does not rust, dull, or corrode dry metal instruments B. it does not require ventilation. C. the unsaturated chemical solution is reusable and is automatically recycled, eliminating the need to refill the sterilizer. D. a longer cycle time ensures superior penetration of closed containers.

A. it does not rust, dull, or corrode dry metal instruments

The following are considered single-use items except A. metal impression trays. B. patient napkins. C. irrigating syringes D. plastic orthodontic brackets.

A. metal impression trays.

Which of the following patient care items is classified as a semi-critical instrument? A. mouth mirror B. Lead apron C. Dental hygiene scalers D. Dental bur

A. mouth mirror

An Environmental Protection Agency (EPA)-registered intermediate-level or low-level disinfectant is suitable for cleaning ____________ instruments. A. noncritical B. semicritical and noncritical C. critical and semicritical D. critical, semicritical, and noncritical

A. noncritical

Instruments need to be bagged before steam sterilization to: A. protects them from becoming contaminated after sterilization B. demonstrate that they have been in a holding solution for a sufficient length of time C. keeps them from rusting D. identifies them as dental restorative treatment instruments rather than dental hygiene instruments

A. protects them from becoming contaminated after sterilization

A tear in an instrument package requires the dental assistant to: A. rebag/ resterilize and use a new instrument package. B. do none of these solutions C. ignore the hole. D. staple the hole closed.

A. rebag/ resterilize and use a new instrument package.

All reusable instruments (critical and semicritical) that contact the patient's blood, saliva, or mucous membranes must be: A. sterilized. B. sanitized. C. precleaned and disinfected D. discarded in a biohazard bag.

A. sterilized.

The ultrasonic cleaner should be tested by: A. submersing a piece of aluminum foil for 20 seconds while the machine is functioning. B. placing used silverware in it and seeing if debris is being removed. C. pushing the reset button and seeing if it the pilot light comes back on. D. placing a penny in the unit while it is dry and seeing if the tarnish is removed.

A. submersing a piece of aluminum foil for 20 seconds while the machine is functioning.

"Green" infection control protocols can be implemented in all of the following except A. traditional film-based radiography. B. digital radiology. C. using only EPA-registered disinfectants D. using recyclable product packaging.

A. traditional film-based radiography.

All of the following will cause a sterilization failure except A. using correct packaging material. B. excessive packaging. C. overloading of sterilizer. D. inadequate instrument cleaning.

A. using correct packaging material.

Personal protective equipment (PPE) that must always be used when processing instruments includes A. utility gloves, a mask, eyewear, and protective clothing. B. vinyl or latex gloves, a mask, eyewear, and protective clothing. C. utility gloves, a mask, and protective clothing but not eyewear. D. utility gloves, eyewear, and protective clothing but not a mask.

A. utility gloves, a mask, eyewear, and protective clothing.

Biologic monitoring is also known as ________ testing. A. spore B chemical C. culture D. bacterial

A.SPORE

Which of the following is an appropriate procedure when using glutaraldehyde

Avoid inhaling the fumes. Always rinse instruments thoroughly prior to any intraoral use, Wear PPE to protect the eyes, skin, and lungs.

Carpet in dental treatment areas

Harbors both bacteria and fungi

An ultrasonic cleaner cleans dirty instruments using sound waves, which causes cavitation and implosion. TRUE FALSE

TRUE

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

apply an acceptable barrier following precleaning and disinfection.

To avoid contamination in a dental treatment area, the best approach is to

assume all surfaces have been contaminated

The ultrasonic cleaner should be cleaned and disinfected at least once a day. once every 28 days once a week. every other day.

at least once a day.

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

clean and disinfect the surface at the beginning and end of each workday

__________________________________ are any surfaces that might be directly or indirectly contacted or touched and become contaminated with blood or other potentially infectious materials by gloved hands, aerosol, instruments, devices, or other items in the course of providing dental care

clinical contact areas

The environmental surfaces that must be cleaned and decontaminated more rigorously than the others are

clinical contact surfaces

All of the following surfaces should be protected from contamination with barriers except A. counter tops in the reception area. B. light-curing device, drawer, and air-water syringe handles. C. light handles, light switches, and x-ray control switches. D. headrest and control buttons on the chair.

counter tops in the reception area.

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

disinfectants.

A method for sterilizing unwrapped patient care items for use in an orthodontic practice is ___________________. dry heat sterilization. disinfecting autoclaving. chemiclaving.

dry heat sterilization.

In the sterilization process, a process indicator is an example of _____ monitoring. external chemical physical biologic

external chemical

The least desirable method of precleaning dental instruments is hand scrubbing. ultrasonic cleaning instrument washing machines. rinsing in a holding solution.

hand scrubbing.

Floors, walls, and sinks are all examples of ________________________.

housekeeping surfaces

Clinical contact surfaces that have been contaminated with blood should be cleaned and disinfected with what type of level of disinfectant?

intermediate-level disinfectant

Housekeeping surfaces

need to be cleaned with only a detergent or low-level disinfectant

The purpose of wiping down a surface with visible saliva and or blood (body fluids) prior to disinfecting is called ______________.

precleaning

Which of the following is the best method used to decontaminate a surface in a dental treatment area with crevices, knobs, or other difficult-to-clean features?

precleaning and use of a surface barrier

Precleaning can be accomplished using

regular soap and water

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

removing and discarding with gloved hands, and replacing using clean gloves between patients

At the completion of the cleaning cycle of an ultrasonic cleaning unit, instruments should be rinsed with clear water. bagged. put away. placed in the sterilizer.

rinsed with clear water.

Following infection control protocol here at Oxnard College, surface barriers

should be removed and discarded between patients while hands are still gloved.

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

the surface needs to be cleaned and disinfected.

By current infection control guidelines of the Organization for Safety and Asepsis Procedures (OSAP), chairside computers are considered to be _____ surfaces.

touch surfaces