Asepsis In Endodontics Question And Answers

Asepsis In Endodontics Definitions

• Sterilization
  • It is the complete destruction of agents that are capable of causing infections, including spores.

Asepsis In Endodontics Important Notes

• Methods of sterilization
  • Physical agents
    • Sunlight
    • Drying
    • Dry heat
    • Moist heat
    • Filtration
    • Radiation
  • Chemical agents
    • Alcohol
    • Aldehyde
    • Chlorines
    • quaternary ammonium compound
    • Phenolic compounds
    • Antiseptics

Asepsis in Operative Dentistry

Asepsis In Endodontics Long Essays

Question 1. Discuss sterilization of endodontic instruments.
Answer.

Sterilization: It is the complete destruction of agents that are capable of causing infections, including spores.

Sterilization Of Endodontic Instruments Methods:

Physical Agents:

• Sunlight:
  • Natural means
  • Has bactericidal activity
• Drying:
  • Unreliable
  • Spores are unaffected
• Dry heat:
  • Consists of
    • Flaming – for culture tubes, glass
    • Red heat – needles
    • Incineration – Dressings
    • Hot air oven – At 160°C for 2 hours
  • Metallic, glass particles, powder
• Moist heat:
  • Causes denaturation of proteins
• Filtration:
• Radiation:
  • Causes:
    • Inhibition of DNA replication
    • Damaging structure of DNA
    • Denaturation of protein

Read And Learn More: Endodontics Question and Answers

• Ultrasonic vibration:

Sterilization Of Endodontic Instruments Chemical agents:

• Alcohol Ex. Ethyl alcohol
  • Bactericidal
  • Corrosive
  • Fast acting
• Aldehyde – Ex.Glutaraldehyde
  • High-level disinfectant
  • Non-corrosive
  • Long activated life
• Chlorines
• Quaternary Ammonium Compound
  Ex:
  • Benzalkonium chloride
  • Low-level disinfectant
• Phenolic compounds:
  • Low-level disinfectant
  • Used for floors, walls, and furniture
• Antiseptics
  • Iodophor Ex. Povidoneiodone
    • Broad spectrum
    • Formulated as 1% I2 solution
  • Chlorhexidine

Sterilization Of Endodontic Instruments:

Sterilization Of Endodontic Instruments Steps:

• Pre-soaking in water to soften organic debris
• Cleaning – Hand washing or ultrasonic cleaning is done
• Drying – To prevent corrosion
• Packaging – Wrapping of instruments in clothes
• Sterilization
• Drying/cooling
• Storage
• Distribution
• Sharpening of instruments

 

Asepsis in Operative Dentistry

Asepsis In Endodontics Short Questions And Answers

Question 1. Disinfection.
Answer.

Disinfection

• It is the destruction of pathogenic micro-organisms
• It permits adequate removal of pulp tissue and debris
• Leads to the enlarging of the canal by biomechanical means and the clearing of its contents by irrigation

Question 2. Glass Bead Sterilizer/Salt Bead Stabilizer.
Answer.

Glass Bead Sterilizer

Rapid method of sterilization

Glass Bead Sterilizer Materials Used:

• Usually salt
• Salt is replaced by glass beads smaller than 1 mm in diameter

Glass Bead Sterilizer Reason For Smaller Beads:

• Efficient in transferring heat to instruments
• Time required – 5-15 seconds
• Temperature – 437 – 465°F

Glass Bead Sterilizer Advantages:

• Easily available
• Salt is replaced by glass beads smaller than 1 mm in diameter

Glass Bead Sterilizer Disadvantage:

• Handle portion is not sterilized

Question 3. Autoclave.
Answer.

Autoclave

Moist heat sterilization method

Autoclave Principle:

Autoclave Advantages:

• Effective
• Accurate
• Rapid

Autoclave Disadvantages:

• Causes corrosion
• Melts rubber
• Unsuitable for oils

Autoclave Factors Effecting It:

• Cleaning of instruments
• Direct flow of steam
• Periodic monitoring of sterilizer

Asepsis in Operative Dentistry

Asepsis In Endodontics Viva Voce

• Hottest part of the glass bead sterilizer is along its outer rim and the temperature is lowest in the center of the surface layer of salt