치과 진료실내의 세균오염도와 영향인자에 관한 연구

Abstract

Objectives: The purpose of this study was to identify the stains causing infections in dental clinics by analyzing bacterial contamination, as well as to suggest improvements for infection control in dental clinics. Methods: In this study, a questionnaire survey of 47 dental hospitals and clinics located in Gyeonggi-do and Incheon, South Korea was administered from June 2013 to September 2013 and used to investigate the practice rates of infection control by dental hygienists and to analyze the bacterial contamination levels in dental offices. Results: In the studied institutions, the bacterial contamination levels of water lines were colony forming units (CFU)/mL for three-way syringes, for high-speed handpieces and for gargling water. The bacterial contamination levels of surfaces were in cuspidors, higher than in unit chairs () and light handles (). The mean bacterial cell count of water lines and surfaces was relatively high in all establishments founded 11 years ago or more, and the mean bacterial cell count of waterline handpieces was in establishments founded between one and five years ago, six to ten years ago and 11 years ago or more, which suggests that earlier foundation is associated with higher bacterial contamination levels with a statistical difference (p in at least 11-year-old establishments, statistically significantly higher among in one- to five-year-old () and six- to ten-year-old clinics () (p