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KMID : 1020220180180040433
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Journal of Korean Society of Dental Hygiene
2018 Volume.18 No. 4 p.433 ~ p.440
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Quantitative and qualitative analysis of microorganisms in dental unit water
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Lee Seung-Hee
Park Ji-Hye
Sakong Joon
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Abstract
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Objectives: The purpose of this study was to investigate the pathogenicity of microorganisms by quantitative and qualitative analysis of microorganisms before and after flushing of dental unit water.
Methods: This study was conducted on the supply of high-speed handpieces, ultrasonic scalers, and air-water syringes, which sterilized from 10 dental unit chairs at a dental clinic in South Gyeongsang Province. The number of bacterial communities was calculated by collection before and after flushing (2, 4, and 6 minutes).
Results: The mean number of bacteria in the handpiece water before flushing was 27,208 CFU/㎖; 2 minutes after flushing, 2,180 CFU/㎖; 4 minutes after flushing, 900 CFU/㎖; and 6 minutes after flushing, 412 CFU/㎖.
Conclusions: To minimize the risk of cross-infection and intra-clinic infection in dental clinics, education and water quality monitoring may be needed.
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KEYWORD
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Bacteria, Cross infection, Dental clinics, Dental unit water
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