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Aerobic bacterial contamination in dental materials
C D Rice1, B Moghadam, R E Gier
1Department of Oral Diagnosis, UMKC School of Dentistry 64108.
Oral Surgery, Oral Medicine, and Oral Pathology
|October 1, 1990
Summary
Dental materials like alginate and glass ionomer cement can harbor aerobic bacterial contamination, posing infection control risks. This study found viable bacteria in 20-30% of samples from these essential dental products.
Area of Science:
- Microbiology
- Dental Materials Science
- Infection Control
Background:
- Growing concerns regarding disease transmission necessitate enhanced infection control protocols in dental settings.
- The potential for microbial contamination of dental materials requires thorough investigation.
Purpose of the Study:
- To assess aerobic bacterial contamination in factory-sealed dental material samples.
- To identify specific dental materials that may harbor viable microorganisms.
Main Methods:
- Multiple unopened containers of 12 diverse dental materials were sampled.
- Samples were incubated in broth medium at 38°C for one week.
- Suspected bacterial growth was verified using Gram staining.
Main Results:
- Bacterial contamination was detected in 20% to 30% of alginate, glass ionomer cement, base powders, and retraction cord samples.
- The remaining eight dental materials showed no evidence of bacterial growth.
- Viable aerobic organisms were identified in samples from 4 out of 12 tested dental material products.
Conclusions:
- Certain commonly used dental materials can be contaminated with viable aerobic bacteria.
- This contamination highlights a potential risk for infection transmission in dental procedures.
- Improved quality control and handling of dental materials are crucial for patient safety.
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