Suppress the aerosol generation from the air turbine handpiece in dental clinics

Chen, Daner2; Wang, Zheng3; Yu, Boyang2; Tang, Xiujuan4; Shen, Yuehong3; Wang, Lian-Ping2; Wang, Yuenan1; Yang, Hongyu3; Deng, Weiwei2

2022-08-01

10.1063/5.0095039

AIP ADVANCES   Impact Factor & Quartile

2158-3226

The COVID-19 pandemic imposes a severe challenge to the health care providers and patients in dental clinics as the dental procedures produce abundant airborne materials. Although dental practices use a multi-layered protective procedure to reduce the potential danger from dental aerosols, it is still beneficial to suppress the aerosol generation from the origin as much as possible. Reducing the aerosol generation (especially the droplets of smaller diameters) from the very beginning will ease the burden on all subsequent layers of protection. In this work, we first provide a relatively complete picture of the structure of the spray produced by the air turbine handpiece. We found that the spray consists of two domains: one is the canopy shaped centrifugal zone and the other is a dense ballistic spray core. The droplets from the centrifugal zone are much smaller than those of the spray core and, hence, are more prone to stay in the air. The location of the centrifugal zone also makes it more challenging to be contained by the mouth or rubber dam. To suppress the atomization of the centrifugal zone, we used the food-additive carboxymethylcellulose sodium (CMC-Na) water solutions of different concentrations. The data show that the viscoelastic property of the 0.5 wt. % CMC-Na water solution can effectively suppress the aerosol generation of the centrifugal zone. (C) 2022 Author(s).

SCI ; EI

English

First ; Corresponding

National Science Foundation of China[12041601] ; Science, Technology and Innovation Committee of Shenzhen Municipality["2020-148","2021-255"] ; Sanming Project of Medicine in Shenzhen[SZSM 201512036] ; Shenzhen Fund for Guangdong Provincial High-level Clinical Key Specialties[SZGSP008]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000843002000011

AIP Publishing

20223612701189

Aerosols ; Centrifugation ; Viscoelasticity ; Wind turbines

Wind Power (Before 1993, use code 611 ):615.8 ; Chemical Operations:802.3 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.Peking Univ, Shenzhen Hosp, Dept Radiat Oncol, Beijing, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen, Peoples R China
3.Peking Univ, Shenzhen Hosp, Dept Oral & Maxillofacial Surg, Beijing, Peoples R China
4.Shenzhen Ctr Dis Control & Prevent, Guangdong, Peoples R China

Chen, Daner,Wang, Zheng,Yu, Boyang,et al. Suppress the aerosol generation from the air turbine handpiece in dental clinics[J]. AIP ADVANCES,2022,12(8).

Chen, Daner.,Wang, Zheng.,Yu, Boyang.,Tang, Xiujuan.,Shen, Yuehong.,...&Deng, Weiwei.(2022).Suppress the aerosol generation from the air turbine handpiece in dental clinics.AIP ADVANCES,12(8).

Chen, Daner,et al."Suppress the aerosol generation from the air turbine handpiece in dental clinics".AIP ADVANCES 12.8(2022).