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Related Concept Videos

Methods of Sterilization II: Chemical Methods01:30

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In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
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Safety Precautions and Operating Procedures in an ABSL-4 Laboratory: 3. Aerobiology
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Exploring sterilizer performance through external biological indicator testing: a retrospective study.

Bahar Vatanparast1, Juan M Buitrago1, Michelle F Siqueira2

  • 1College of Dentistry, University of Saskatchewan, Saskatoon, SK, Canada.

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|November 10, 2024
PubMed
Summary
This summary is machine-generated.

Dental instrument sterilization is safe, with low failure rates due to effective steam sterilization. Human error remains the main cause of sterilization failures, necessitating further research into interventions.

Keywords:
Dental officeHealth care quality assuranceInfection controlSterilization

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Area of Science:

  • Dental Public Health
  • Infection Control
  • Medical Device Performance

Background:

  • Quality assurance policies, including biological indicator (BI) testing, are crucial for preventing nosocomial infections in dental settings.
  • Assessing sterilizer performance via BI testing helps mitigate risks associated with inadequate instrument sterilization.

Purpose of the Study:

  • To evaluate the prevalence and causes of failed sterilization cycles in dental offices over an eight-year period.
  • To analyze data from a quality assurance laboratory in Saskatchewan, Canada, focusing on biological indicator test results.

Main Methods:

  • Analysis of a database containing 198,771 biological indicator (BI) tests from 362 dental offices between 2015 and 2022.
  • Dental offices used Sporview® Biological Sterility Indicators, with results assessed via a colorimetric method by an external quality assurance laboratory.
  • Statistical analysis was performed using IBM SPSS 28.0.

Main Results:

  • The overall sterilization failure rate was 0.20%, showing a decreasing trend from 0.51% in 2015 to 0.15% in 2022.
  • Steam sterilization (98% utilization) had a significantly lower failure rate (0.20%) compared to dry heat (1.30%) and chemical vapor (1.40%) sterilizers.
  • Human error accounted for 91.80% of BI failures, with equipment failures more common in dry heat and chemical vapor sterilizers.

Conclusions:

  • Low and decreasing sterilization failure rates indicate safe dental office procedures and reduced disease transmission risk in Canada.
  • Steam sterilizers demonstrate high effectiveness with minimal failure rates.
  • Human error is the primary driver of sterilization failures, highlighting the need for targeted interventions and further research.