Types Of Autoclaves In Dentistry

Types Of Autoclaves In Dentistry

Write short note on autoclave.

Answer. It is the means of moist heat sterilization.

• It is the method of choice for sterilization of instruments as it eliminates even resistant spore-forming microorganisms, fungi, viruses along with vegetative microorganisms.
• It works on principle of steam under pressure.
• It has two pressure cycles i.e.
  • 15 psi pressure at 121°C for 30 minutes.
  • 30 psi pressure at 134°C for 3 to 5 minutes also known as Flash method.

Autoclave Mechanism of action

Steam is the mixture of heat and water vapor.

As it comes in contact with any cool surface it get condensed and heat is released from water.

This heat is taken by surface it comes in contact with. Heat goes on penetrating deeper layers of object.

Steam and air move in vertical direction and the movement is quicker penetration of steam into the material, it is also better if articles are placed vertically in autoclave.

Autoclave Advantages

• It is economical.
• Penetration is good.
• Cycle time is short.
• It is monitored easily.
• No exhaust or special chemicals are to be required.

Autoclave Disadvantages

• Carbon steel gets damaged.
• Moisture retention is present.