Card Set Information
Ch21 Short questions
Ch21 short answer
Describe the seven steps involced in processing dental instruments
3 most common methods of heat sterilization; disadvantages and advantages?
-Dry heat:ortho, oral surgery, 1 hour, dry fast, no corrosion
disadv. no plastic or fabric, cannot sterilized liquids
-Chemical vapor sterilizer:Does not cause rust, 20 min
disadv. not environmental friendly, special solution, damage plastic and rubber
: steam under pressure, short time, no corrosion, quick dry
disadv. damage plastic and rubber, uses distilled water, instruments must be dry.
Precautions necessary when materials are packaged for sterilization?
-keep bag sealed for instruments to remain sterile
Steps required for sterilization of a high-speed dental handpiece?
1.remove and wipe debris off, flush water
2.remove bur and handpiece from hose
3.ultrasonic clean if recommended, drain, attach hose & operate
4.no ultrasonic recommended, scrub with brush, water & soap
5.lubricate if require
6.no lubricant, use non lubricant cleaner
7.follow manufacture instructions
9.use cotton tip with isopropyl alcohol
10.flush water & air lines
Differences between process indicators and process integrators?
indicators are placed outside package.
integrators are placed inside.
When and how biologic monitoring is done?
1. PPE, place B1 strip in bundle of instruments & seal package
2. Place pack with B1 in center
3. Place reminder of packages
4. Remove PPE & wash hands
5. Record info date, time estc..
6. Remove B1 strip
7. mail spore test strip & control B1 to monitoring service
What is the primary disadvantage of "flash" sterilization?
Can only use unwrapped instruments adn unwrapped instruments are no longer sterile once removed.
What are the 3 forms of sterilization monitoring?
: temperature, pressure, exposure time
: change colors when exposed to certain conditions
: only way to verify sterilization
how sterilization failures occur?
Improper instrument cleaning, packaging or sterilizer malfunction and timing.
What are the limitations of liquid chemical sterilants?
Rubber dam frames, shade guides, x-ray film-holding devices are damaged
What are the the classification of instruments used to determine the type of processing that should be used?
critical, semicritical, noncritical
penetrate soft tissue & bone
Contact with oral tissues but does not penetrate soft tissue or bone
Intact skin only
What is the pusrpose of holding solution before instrument processing?
If instruments cannot be cleaned immediately after procedure, place in holding solution.
To prevent drying of blood & debris
What are the safety precautions necessary when one is operating an ultrasonic cleaner?
PPE and set of tongs
What are the CDC Guidelines for sterilization and disinfection of patient care items?
- Use only FDA cleared medical devices.
- clean & heat sterile before use of instruments
What are the CDC Guidelines for cleaning and decontamination of instruments?
- Minimize handling of loose contaminated instruments during transport
- clean debris
- use automated equipment
- heavy duty gloves
What are the CDC Guidelines for preparation and packaging of instruments for sterilization?
- Use internal chemical indicator inside package
- Use container wrapping
- Before strilization of critical adn semicritical instruments inspect instruments cleanliness