상수도공급시스템 치과 유니트 체어의 수관소독 방법에 따른 미생물 비교분석 = Microbiologycal Analysis or Dental Unit Waterline from public water system with comparisons different waterline disinfection methods

다국어 초록 (Multilingual Abstract)

Objectives: The purpose of this study was microbiologycal analysis of Dental Unit waterline from public water system with comparisons different waterline disinfection method.
Methods; This study conducted by analysis of microbial counts for 2 dental unit chairs that have auto waterline cleaning system and 10 dental unit chairs that don't have auto waterline cleaning system and 7 wash base near 12 unit chairs.
Samples of Ten unit chairs were collected before using devices and after 2minutes flushing. Samples of two unit chairs were devided into pre-waterline cleaning and post waterline cleaning.
Results: From ten dental unit chairs, The number of bacteria reduced by 89.9 % at highspeed handpieces, reduced by 79.2% at 3-way syringes, reduced by 7).7%at cuspidors. However, even after the water was flushed for 2minutes, the bacterial contamination level was not reduced below 100CFU/ml. From two dental unit chairs, After waterline cleaning, the number of bacteria reduced up to 100%.
Conclusions: Before using devices, Flushing and cleaning of dental unit waterline reduced bacterial counts. Unit waterline cleanning is bigger effects than flushing.