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学科主题: 口腔医学
题名:
The effectiveness of an air cleaner in controlling droplet/aerosol particle dispersion emitted from a patient′s mouth in the indoor environment of dental clinics
作者: Chen, Chun1; Zhao, Bin1; Cui, Weilin1; Dong, Lei1; An, Na2,3; Ouyang, Xiangying2,3
关键词: indoor environment ; computational fluid dynamics ; droplets ; aerosol particles ; dental clinic ; air cleaner
刊名: JOURNAL OF THE ROYAL SOCIETY INTERFACE
发表日期: 2010-07-06
DOI: 10.1098/rsif.2009.0516
卷: 7, 期:48, 页:1105-1118
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: HEALTH-CARE WORKERS ; AIRBORNE INFECTION ; PARTICULATE MATTER ; VENTILATED ROOMS ; DROPLET NUCLEI ; HOSPITAL WARD ; TRANSPORT ; TRANSMISSION ; REMOVAL ; RISK
英文摘要:

Dental healthcare workers (DHCWs) are at high risk of occupational exposure to droplets and aerosol particles emitted from patients′ mouths during treatment. We evaluated the effectiveness of an air cleaner in reducing droplet and aerosol contamination by positioning the device in four different locations in an actual dental clinic. We applied computational fluid dynamics (CFD) methods to solve the governing equations of airflow, energy and dispersion of different-sized airborne droplets/aerosol particles. In a dental clinic, we measured the supply air velocity and temperature of the ventilation system, the airflow rate and the particle removal efficiency of the air cleaner to determine the boundary conditions for the CFD simulations. Our results indicate that use of an air cleaner in a dental clinic may be an effective method for reducing DHCWs′ exposure to airborne droplets and aerosol particles. Further, we found that the probability of droplet/aerosol particle removal and the direction of airflow from the cleaner are both important control measures for droplet and aerosol contamination in a dental clinic. Thus, the distance between the air cleaner and droplet/aerosol particle source as well as the relative location of the air cleaner to both the source and the DHCW are important considerations for reducing DHCWs′ exposure to droplets/aerosol particles emitted from the patient′s mouth during treatments.

语种: 英语
所属项目编号: 50908127 ; 2006BAJ02A10
项目资助者: National Natural Science Foundation of China ; National Key Technology Research and Development Program of China
WOS记录号: WOS:000277991600009
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/59484
Appears in Collections:北京大学口腔医学院_牙周科_期刊论文

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作者单位: 1.Tsinghua Univ, Sch Architecture, Dept Bldg Sci, Beijing 100084, Peoples R China
2.Peking Univ, Dept Periodontol, Sch Stomatol, Beijing 100081, Peoples R China
3.Peking Univ, Dept Periodontol, Hosp Stomatol, Beijing 100081, Peoples R China

Recommended Citation:
Chen, Chun,Zhao, Bin,Cui, Weilin,et al. The effectiveness of an air cleaner in controlling droplet/aerosol particle dispersion emitted from a patient′s mouth in the indoor environment of dental clinics[J]. JOURNAL OF THE ROYAL SOCIETY INTERFACE,2010,7(48):1105-1118.
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