Test 2 Flashcards
Sterilization
The process of destroying all forms of microbial life, including bacterial spores.
Disinfection
The process of reducing the number of pathogenic microorganisms on inanimate objects to a safe level.
Critical patient care items
Items that come into contact with sterile tissue or the vascular system.
Semicritical patient care items
Items that come into contact with mucous membranes or nonintact skin.
Noncritical patient care items
Items that come into contact with intact skin but not mucous membranes.
Sterility assurance
The process of ensuring that instruments and equipment are free from viable microorganisms.
Instrument processing
The procedures involved in cleaning, disinfecting, and sterilizing dental instruments.
Instrument cleaning
The process of removing debris and contaminants from instruments to prepare them for sterilization.
Packaging materials
Materials used to wrap or contain instruments before sterilization.
Steam sterilization
A method of sterilization that uses steam under pressure to kill microorganisms.
Dry heat sterilization
A method of sterilization that uses hot air to kill microorganisms.
Unsaturated chemical vapor sterilization
A method of sterilization that uses a chemical solution to kill microorganisms.
Sterilization monitoring
The process of verifying that sterilization has been achieved and maintained.
Sterilization failure
The inability to achieve proper sterilization, which can be caused by various factors.
Sterilized instruments
Instruments that have undergone the sterilization process and are free from viable microorganisms.
Sterilization facility
A designated area within a dental office where instruments are sterilized.
Infection control
Measures taken to prevent the spread of infectious diseases in healthcare settings.
Decontamination
The process of reducing the number of microorganisms on surfaces and equipment.
Handpieces
Dental instruments used to perform dental procedures, such as drills.
Instrument Processing
Collection of procedures preparing contaminated instruments for reuse.
Critical Items
Patient care items categorized by CDC as having the highest potential risk of infection during use.
Semicritical Items
Patient care items categorized by CDC as having a lower risk of infection during use compared to critical items.
Noncritical Items
Patient care items categorized by CDC as having the lowest risk of infection during use.
Sterility Assurance
Ensuring correct performance of instrument processing steps and monitoring of sterilization with indicators for patient protection.
Biological Monitoring
Evaluation of sterilization effectiveness using live spores to detect sterilization failures.
Chemical Monitoring
Assessment of physical conditions during sterilization using heat-sensitive chemicals.
Mechanical Monitoring
Observation of sterilizer gauges and displays to record sterilizing temperature, pressure, and exposure time.
Instrument Sharpening
Process involving cleaning, sterilizing, sharpening, and re-sterilizing instruments to manage infection control.
Handpiece Asepsis
Cleaning, packaging, and sterilizing high-speed handpieces, reusable prophylaxis angles, nose cones, and slow-speed handpiece motors between patients.
Sterilization of Heat-Labile Items
Use of liquid sterilants for plastic-type items that would be damaged by heat processing.
Ethylene Oxide Gas
Method of sterilization using ethylene oxide gas.
Hydrogen Peroxide Gas Plasma
Method of sterilization using vaporized hydrogen peroxide gas plasma.
Bead Sterilizers
Method of sterilization using bead sterilizers.
Hot Oil Sterilizers
Method of sterilization using hot oil sterilizers.
Critical Patient Care Items
Category with the highest potential risk of infection during use
Semicritical Patient Care Items
Category with moderate potential risk of infection during use
Noncritical Patient Care Items
Category with low potential risk of infection during use
Steam Sterilization
Involves heating water to generate steam in a closed chamber for rapid microbial kill
Dry Heat Sterilization
Involves heating air with transfer of heat energy to instruments
Unsaturated Chemical Vapor Sterilization
Involves heating a special chemical solution in a closed chamber to produce hot chemical vapors for microbial kill
What are the 7 steps to instrument processing?
holding, precleaning, corrosion control, packaging, sterilization, sterilization monitoring, handling
safe transportation
this can be achieved by gathering instruments, trays, or cassettes while wearing heavy utility gloves and placed the items in a leakproof container with solid sides, labeled as biohazard
aluminum foil test
this tests to ensure an ultrasonic is working properly by placing this item halfway into the ultrasonic for 20 seconds and noting indentations and holes
packing instruments before processing
this helps maintain the sterility of the instruments after they are processed through the sterilizer by preventing them from being contaminated after sterilization during storage or when being distributed
What are the three types of sterilization?
steam, unsaturated chemical vapor, and dry heat
Spore Testing
provides the guarantee of sterilizations by verifying the correct functioning of sterilization cycles
in office monitoring
involves purchasing the appropriate supplies and equipment, analyzing the test and control BIs in the office, and preparing appropriate records
mail in monitoring
involves the office subscribing to a mail in sterilization monitoring service available from private companies or through some dental schools
stainless steel instruments
these are least affected by corrosion from moisture and heat
Why do dentists prefer carbon steel over stainless steel?
the cutting surfaces retain a sharp edge longer
carbon steel instruments
these corrode and lose sharpness during steam sterilization
What percentage of tungsten carbon burs lose their cutting efficiency after steam sterilization?
64%
handpieces
These need to be cleaned inside and out
Why do dentists prefer carbon steel over stainless steel?
the cutting surfaces retain a sharp edge longer
Example sentence: Dentists prefer carbon steel over stainless steel due to the longer retention of sharpness in cutting surfaces.
What percentage of tungsten carbon burs lose their cutting efficiency after steam sterilization?
64%
Example sentence: 64% of tungsten carbon burs lose their cutting efficiency after steam sterilization.
handpieces
These need to be cleaned inside and out because bacteria cannot be removed from the air and water lines
Glutaraldehyde
what is an alternative cleaning solutions for instruments that get damaged by heat such as shade guides, rulers, and x-ray collimating devices?
liquid sterilant/high-level disifectant
2-3% glutaraldehyde and 7% hydrogen peroxide
ethylene oxide gas
the use of this is recognized as a method of sterilization
vaporize hydrogen gas plasma
a more recently developed low temperature sterilizer involves _______________________________
Bead “sterilizers”
these perform a form of dry heat processing that heats glass beads to temps near 218°C and then drops the instruments into the hot beads
Why should we not use bead sterilizers?
BIs are not available and the temperatures can vary
Example sentence: Bead sterilizers should not be used due to the unavailability of BIs and the varying temperatures.
hot oil sterilizer
not commonly used today, but consist of a pan of mineral oil and a heater
why should we not use hot oil sterilizers?
uneven temperatures and effectiveness cannot be verified
Example sentence: Hot oil sterilizers should not be used due to the inability to verify effectiveness and the uneven temperatures.
How should one sterilize a plastic rubber dam frame?
liquid sterilant such as glutaraldehyde
A chemical indicator reveals that an item:
has been processed through a heat sterilizer
How should one load a sterilizer?
Place the packages on their edges
The rationale for packaging instruments before placing them into a sterilizer is to:
Maintain their sterility after sterilization
Spores of Geobacillus stearothermophilus are used to monitor what types of sterilizers?
Unsaturated, chemical vapor and steam
What type of sterilization causes carbon steel instruments to rust?
Steam
Spores of Bacillus atrophaeus are used to monitor what type of sterilizer?
Dry heat
The leading cause of sterilization failure is:
Overloading the sterilizer
The purpose of an aluminum foil test is to:
Determine whether an ultrasonic cleaner chamber has an even distribution of sonic energy
The main rationale for cleaning instruments before sterilization is to:
Give the sterilization procedure the best chance to work
Placing wet instruments into a dry heat, sterilizer or an unsaturated chemical vapor sterilize can:
Counteract the anti-rusting nature of the sterilizers
Instrument packages are wet after the sterilization portion of which of the following sterilizing cycles?
Steam
Wet packages should be allowed to dry inside the sterilizer because paper packaging material may tear on handling and because:
Of wicking
A high-speed handpiece that is destroyed at 149°C cannot be sterilized in:
A dry heat sterilizer
The active ingredient in the unsaturated chemical vapor sterilization process is:
Formaldehyde
The first thing to do after a sterilization failure is to:
Take the sterilizer out of service for processing patient care items
The sterilization process is described best as being:
Sporicidal
When analyzing sport test, Geobaccilus stearothermophilus is incubated at what temperature?
55°C
What sterility assurance procedure should be performed while setting up for the next patient?
The instrument packages should be observed for tears or punctures before being opened
Critical patient care items are to be cleaned and ______ for reuse
Sterilized
Clinical Contact Surfaces
Surfaces needing treatment before each patient interaction
Housekeeping Surfaces
Surfaces treated at the end of each day
Surface Barriers
Impervious covers to prevent microorganism contact
Precleaning
Reduces contaminating microorganisms before disinfection
Disinfectants
Chemicals killing microorganisms on surfaces
High-level Disinfectants
Kill all microorganisms on heat-sensitive objects
Intermediate-level Disinfectants
Kill bacteria, fungi, viruses, and Mycobacterium tuberculosis var. bovis
Low-level Disinfectants
Kill most bacteria, some fungi, and viruses
Antiseptics
Kill microorganisms on the skin
Sterilants
Kill microorganisms on inanimate objects