대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)
- 제36권1호
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- Pages.64-80
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- 1998
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
덴탈유니트의 핸드피스 및 초음파 치석 제거기의 미생물 오염에 관한 연구
A STUDY ON THE MICROBIAL CONTAMINATION OF DENTAL UNIT AND ULTRASONIC SCALER
- Lee, Byung-Moon (Dept. of Prosthodontics, School of Dentistry, Seoul National University) ;
- Kim, Chang-Whe (Dept. of Prosthodontics, School of Dentistry, Seoul National University) ;
- Kim, Young-Soo (Dept. of Prosthodontics, School of Dentistry, Seoul National University)
- 발행 : 1998.02.01
초록
The risk of cross-contamination in dental clinic is very high. Those who are engaged in dental clinic are exposed to various microorganisms in saliva and blood of patient. Potential possibility of cross-contamination of patient to patient, patient to dentist, dentist to laboratory technician always exist, which is important in the view of public health. It is well known that microorganisms may cause cross-contamination by suck-back of microorganisms into the water supply line or air supply line of dental unit and sprayed back into the next patient's oral cavity. The majority of microorganisms coming from dental unit are water microorganisms from the main water supply which have colonized the tube within the units and multiplied in the relatively warm and stagnant conditions. The purpose of this study is to measure the extent of microbial contamination of dental unit and ultrasonic scaler, to evaluate that dental unit water supply is suitable for drinking water, and to assess the effect of flushing on reduction of microbial contamination of dental unit and ultrasonic scaler. In the first experiment, water samples(50ml) from 20 dental units and 10 ultrasonic scalers in Seoul National Univ. Hosp. were tested for the presence of coliform. The samples were filtered by membrane filtration technique.(Microfil system, Millipore Co. U. S. A.) The filter was then placed onto MacConkey agar plate and the plates with filter on it were incubated aerobically at