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Disinfection of impressions. Methods and effects on accuracy
1Division of Restorative and Prosthodontics, New York University College of Dentistry, USA.
The New York State Dental Journal
|June 1, 1997
Summary
Disinfection is crucial for dental impressions to prevent cross-contamination. Immersion in disinfectant for 30 minutes is effective for most materials, while alginate requires alternative methods like internal disinfection.
Area of Science:
- Dental Materials Science
- Infection Control in Dentistry
Background:
- Bacterial cross-contamination is a significant risk in dental procedures.
- Sterilization of dental impressions is often impractical due to material sensitivity.
Purpose of the Study:
- To outline effective disinfection methods for dental impression materials.
- To prevent bacterial cross-contamination during dental procedures.
Main Methods:
- Disinfection by immersion in disinfectant solution for 30 minutes.
- Disinfection by spraying and bagging for specific materials.
- Internal disinfection for irreversible hydrocolloid (alginate).
Main Results:
- Immersion is effective for hydrophobic impression materials with minimal distortion.
- Hydrophilic silicones and alginate require alternative disinfection to prevent distortion.
- Internal disinfection allows immediate pouring of alginate impressions.
Conclusions:
- Disinfection, not sterilization, is the preferred method for dental impressions.
- Material-specific disinfection protocols are essential for maintaining accuracy and preventing contamination.
- Internal disinfection offers an efficient method for alginate impressions.