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Dental Hygiene 1 > Costley Module 3 > Flashcards

Costley Module 3 Flashcards

1
Q

3 objectives for infection control

A

Reduce pathogens to tolerable levels
Eliminate cross contamination
Standard precautions

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2
Q

3 methods of pre cleaning instruments?

A

Washer/thermal disinfector
Ultrasonic processor
Manual scrubbing

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3
Q

Advantages of ultrasonic bath for pre cleaning of instruments

A 
Increased efficiency 
Improved effectiveness 
Reduced danger to clinician 
Bette Penetration into instrument areas 
Eliminates scrubbing which produces aerosols
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4
Q

Ultrasonic:

Guard against —- instruments must be —- —–

A

Overloading

Completely immersed

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5
Q

Non stainless steel instruments require you to do what before sterilizing

A

Pre dip in rust inhibitor

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6
Q

Color change indicators indicate what?

A

Sterilizer reached a specific temp NOT that they are sterile

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7
Q

What are the approved methods of sterilization

A

Steam under pressure
Dry heat
Chemical vapor

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8
Q

Steam under pressure includes what two methods

A

Gravity displacement

Prevacuum

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9
Q

Gravity displacement takes how long and what temperatures

A

15-30min
250F
121C

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10
Q

Pre vacuum sterilization takes how long and at what temperatures

A

3.5-10min
270F
132C

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11
Q

Dry heat ovens take how long and at what temperatures

A

120min
320F
160C

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12
Q

Chemical vapor takes how long and at what temperatures

A

20min
270F
132C

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13
Q

What are the 3 tests for sterilization

A

Internal indicator
External indicator
Biological indicator

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14
Q

What are the 2 types of dry heat sterilization

A

Static and forced air

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15
Q

What is the ingredient used in chemical vapor sterilization

A

Formaldehyde

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16
Q

The external indicator strip says what?

A

Temperature was reached

17
Q

The internal indicator says what

A

Instruments were exposed to temp and steam for required time

18
Q

The biological indicator says what

A

The autoclave is functioning properly

19
Q

Biological testing is done how often

A

1xweek

20
Q

Moist heat sterilizing —- but has the — temp

Dry heat takes the —- time

A

corrodes
lowest
Longest

21
Q

Steam autoclaves use —- bacteria test strips vials ampules

A

Geobscillus stearothermophilus

22
Q

Dry heat uses —- bacteria

A

Bacillus ateophaeus

23
Q

Chemical vapor uses — bacteria

A

Geobscillus stearothermophilus

24
Q

Moist heat cause distraction of Microorganisms by?

A

Coagulation of essential proteins

25
Q

Moist heat can’t be used on what type of materials

A

Oils
Waxes
Powders

26
Q

The most economical method of sterilization is?

A

Steam autoclave

27
Q

One disadvantage of steam under pressure is?

A

Corrosion of carbon steel instruments

28
Q

The action of dry heat is?

A

Oxidation

29
Q

High level chemical disinfectants inactivate —– and — Microorganisms

A

Spores

All forms

30
Q

High level chemical disinfectants can be used as sterilants if?

A

Left in for a long time

31
Q

Intermediate level chemical disinfectants inactivate — but not —

A

All Microorganisms

Spores

32
Q

Low level chemical disinfectants inactivate —- but not?

A

Vegetative bacteria and lipid viruses

Spores TB and non lipid viruses

33
Q

Definition of Critical items
Do you sterilize or disinfect
Examples

A

Items that penetrate soft tissue/bone
Sterilize or dispose
Needles,probes,explorers,ultrasonic tip, curets

34
Q

Definition of Semi-critical items
Sterilize or disinfect
Examples

A

Touch intact mucous membranes and oral fluids
Sterilize or high level disinfection
Bite blocks, mirrors, ultrasonic handpiece

35
Q

Definition of Non-critical items
Sterilize or disinfect
Examples

A

Only contacts unbroken epithelium
Clean and use intermediate level disinfectant
Light handles, eyewear, bite sticks

36
Q

Definition of Environmental items
Sterilize or disinfect
Examples

A

No contact with pt surfaces
Clean and intermediate to low level disinfection
Countertops etc

37
Q

Flush water lines at beginning of the day for how long? And how long between pts?

A

2min

30sec

38
Q

What should you do before giving a shot?

A

Apply antiseptic to reduce bacteria

39
Q

You should do what before scaling into pockets

A

Apply/swab with antiseptic solution

Dental Hygiene 1 (26 decks)

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