Infection Control And Sterilization

Infection Control And Sterilization

Write a short answer on the disinfection of dental materials.
Answer:

Disinfection of dental materials should be done to prevent the cross-infections.

• Following are the various disinfecting materials for disinfecting dental materials are:
• Impression compound: Iodophors, sodium hypochlorite (1:10 dilution).
• ZOE impression: Iodophors, sodium hypochlorite (1:10 dilution).
• Polyether: Iodophors, sodium hypochlorite (1:10 dilution).
• Silicone and polysulphide: Iodophors, sodium hypochlorite, synthetic phenols.
• Wax bites: Iodophors.

Disinfection of Various Dental Materials:

• For disinfection of resin prosthesis recommended method is by disinfecting with sodium hypochlorite (1:10 solution).
• This is done by placing of the prosthesis in a zipped plastic
  bag with disinfectant for 15 minutes.
• As the hydrocolloid impression is taken out from the mouth, it is disinfected before pouring the cast to prevent cross-contamination.
• CDC protocol recommends that hydrocolloids should be immersed in household bleach, i.e. sodium hypochlorite, iodophors, or synthetic phenols.
• The impression should be thoroughly rinsed in water after removal from the mouth, then an impression is sprayed liberally with disinfectant and is wrapped in a disinfectant-soaked towel, and is sealed for 10 minutes. As disinfection is over, it is rinsed thoroughly in water.
• For disinfecting the elastomeric impression materials recommended disinfectant solutions except for polyether are 2% glutaraldehyde, chlorine compounds, complex phenolic, and phenolic glutaraldehyde compounds.
• As polyethers are hydrophilic their disinfectant protocol is the same as hydrocolloids.
• Impressions are disinfected for 10 minutes in 2% glutaraldehyde and for 3 minutes in chlorine compounds.
• If the impression is not disinfected before pouring the cast, it is necessary to disinfect the stone cast. Disinfectants, i.e.
• 5% phenol or 2% glutaraldehyde is mixed with water when the cast is poured.
• Alternatively, models and casts are disinfected by immersion in 1:10 dilution of sodium hypochlorite for 30 minutes or with the spray of iodophor.