AI Article Synopsis
- Previous studies on measuring heterotrophic plate count (HPC) bacteria in dental waterlines have shown inconsistent results.
- This study tested 63 DUWL samples using an in-office method and two commercial lab methods (Standard Methods 9215C and 9215E).
- Findings indicated that Standard Method 9215E is not suitable for DUWL monitoring, while the in-office method is helpful and Standard Method 9215C produced the most accurate results.
Article Abstract
Previous studies have found inconsistent results from testing methods used to measure heterotrophic plate count (HPC) bacteria in dental unit waterline (DUWL) samples. This study used 63 samples to compare the results obtained from an in-office chairside method and 2 currently used commercial laboratory HPC methods (Standard Methods 9215C and 9215E). The results suggest that the Standard Method 9215E is not suitable for application to DUWL quality monitoring, due to the detection of limited numbers of heterotrophic organisms at the required 35°C incubation temperature. The results also confirm that while the in-office chairside method is useful for DUWL quality monitoring, the Standard Method 9215C provided the most accurate results.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4450747 | PMC |
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