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논문 기본 정보

자료유형
학술저널
저자정보
김근영 (영남대학교 환경보건대학원 보건학과) 박은영 (영남대학교) 사공준 (영남대학교) 김은경 (경북대학교)
저널정보
대한예방치과·구강보건학회 대한구강보건학회지 대한구강보건학회지 제48권 제1호
발행연도
2024.3
수록면
3 - 8 (6page)
DOI
https://doi.org/10.11149/jkaoh.2024.48.1.3

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초록· 키워드

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Objectives: Water discharged from waterlines in dental units can cause cross-infection amongdental workers and patients by various mechanisms. Therefore, we analyzed the bacterial counts inthe water of dental unit chair waterlines, according to waterline flushing and related factors. Methods: A total of 58 dental hospitals located in a metropolitan city participated in this study between September 2019 and January 2020. Water was collected from a high-speed handpiece anda three-way syringe of a dental unit chair and transported to the experimental lab within 4 hours;bacterial plating colony counting was performed after culturing for 72 hours. In addition, a surveywas conducted with questions on the characteristics of hospitals, waterline flushing, and relatedfactors, such as water purification systems, regular filter replacement, and backflow preventionequipment. Results: The bacterial count in the water of the dental handpiece and three-way syringe in theinstitutions that performed waterline flushing was lower than that in the institutions that did not(P<0.001). When waterline flushing was performed on dental handpieces, the bacterial countwas found to be lower when regular filter replacement and backflow prevention equipmentwere combined. In addition, disinfection of waterlines had a significant effect on the bacterialcount when performed together with waterline flushing. However, for the three-way syringe,when waterline flushing was performed, no factors significantly affected the bacterial count. Conclusions: To reduce microbial contamination of dental water, flushing of dental unit waterlinescombined with regular filter replacement, backflow prevention equipment, and disinfection of waterlines may be effective in dental hospitals.

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