DENT 1260 IC Unit 5

Unit 5 Sterilization

1. 3 methods of HEAT Sterilization

Autoclave- steam under pressure Chemclave- chemical heated under

pressure Dry heat- heated air

Autoclave

1&2 time, temp pressure + -

Autoclave 250F 20-30 min 15psi

+ liquids, time

- corrosive, no closed container, wet (wick)

Flash cycle- Statim

273F 3-10 minutes

Chemclave- unsaturated chemical vapor

Chemclave

270F 20 min 25psi

Formaldehyde and alcohols

+ time, dry

- need ventilation, no liq, no cloth or cotton

Dry Heat

Dry heat

320F 60-120 min

Static air Forced Air (rapid

heat transfer)

+ no corrosion (dry), great for sharps

- time, no liq, burn some cottons

3. Load and operate

Keep packs, pouches and cassettes separate

Place items on edge, not stacked on top of each other

Keep packages facing the same direction

4. How does Saturated Stem under pressure kill microbes

The heat, not the pressure kills the microbes

Steam sterilizers heat water to generate steam in a closed chamber, producing a moist heat that rapidly kills microbes

The pressure prevents air pockets that are not the correct temp from forming

5. General maintenance and cleaning

Follow Manufacturer instructions Drain fluids and run cleaning solution

through.

7. Reasons for sterilizer failure

dirty instruments packaging Loading Timing Temperature Wrong method for material

8. Handle and store

Do not handle unless pack is DRY and with clean hands only

Dry slowly- do not use fan or blower Handle as little as possible Store in clean, dry closed area

9. Liquid sterilant

Glutaraldehyde, 3-12 hrs, heat liable only and disposable is better

Once removed- must rinse ( no longer sterile), dry and package.

No monitoring Use life of glut??????????????

10. Ethylene oxide, bead and oil

Ethylene oxide- gas , no heat, 4-10 hrs, 16 hr post sterilization aeration

Glass bead- no monitor, not true sterilization, use on endo files for same patient but not between patients

Hot oil- not sterilize, handpiece lube

11. Vocab

Flash cycle- shorter, smaller Unsaturated chem vapor- chemclave Static air- not moving Forced air- fan, moving Sterilization failure- not sterile