Bioaerosol distribution characteristics and potential SARS-CoV-2 infection risk in a multi-compartment dental clinic

Liu, Zhijian; Yao, Guangpeng; Li, Yabin; Zhenzhe, Huang; Jiang, Chuan; He, Junzhou; Wu, Minnan; Liu, Jia; Liu, Haiyang

doi:10.1016/j.buildenv.2022.109624

Cited by 15 publications

(2 citation statements)

References 67 publications

(86 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Salivary glands, oral mucosal epithelium, and saliva are reservoirs of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) [16]. Dental care is a potential risk factor for aerosol droplet transmission because dental-care workers are close to the patient's mouth, which is the source of infection [17][18][19][20]. In addition, dental practice generates aerosolized composite dust when cutting materials such as zirconia, porcelain, metals, and composite resins, suggesting that chronic inhalation of dust and fine particles may be a risk factor for respiratory diseases [21].…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have focused on the diffusion of particles, and few have focused on the real-time dispersal range of droplets and aerosols around the operator. In addition, aerosol and splatter diffusion has been simulated using numerical models and computational fluid dynamics model approaches [20,[23][24][25]. However, computational models are currently limited in their ability to simulate dental treatment completely.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices

et al. 2023

View full text Add to dashboard Cite

Some infectious diseases, including COVID-19, are primarily transmitted via droplets and aerosols. Droplets are larger in particle size and settle to the ground faster due to gravity (3-6 feet) [3]. Aerosols are smaller in particle size and remain airborne for relatively long durations. The aerosol particle size has not been conclusively defined and reportedly ranges from less than 5 µm to 50 µm [4]. Larger particles can carry a higher quantity of viral load and are more likely to be deposited in the upper airways. In contrast, particles smaller than 10

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices

et al. 2023

View full text Add to dashboard Cite

show abstract

Study of aerosol dispersion and control in dental practice

He,

Li,

Chen

et al. 2024

Clin Oral Invest

View full text Add to dashboard Cite

Objectives In this study, we investigated the dispersion patterns of aerosols and droplets during oral practice, simulated the adsorption characteristics of suction devices, and evaluated the effectiveness of suction devices in reducing aerosols during dental procedures. Materials and MethodsFirstly, the continuous images of oral aerosols and droplets were photographed with a high-speed camera, and the trajectories of these particles were recognized and processed by Image J to determine key parameters affecting particle dispersion: diffusion velocity, distance, and angle.Secondly, based on the parameters data, the flow field of aerosol particles around the oral cavity was simulated using computational fluid dynamics (CFD), and the flow field under adsorption conditions was simulated to demonstrate the aerodynamic characteristics and adsorption efficiencies of the singlechannel and three-channel adsorption ports at different pressures. Finally, according to the simulated data, a three-channel suction device was developed, and the adsorption efficiency of the device was tested by the fluorescein tracer method. ResultsThe dispersion experimental data showed that aerosol particles' maximum diffusion velocity, distance, and angle were 6.2 m/s, 0.55 m, and 130°, respectively. The simulated aerosol flow-field distribution was consistent with the aerosol dispersion patterns. The adsorption simulation results showed that the adsorption efficiency of the single-channel adsorption port could reach 74.05% at -350 pa, and the three-channel port was 99.23% at -350 pa and -150 pa. The adsorption experimental data showed that the adsorption efficiency of three-channel suction device was 97.71%.Conclusions A three-channel suction device was designed by simulations and experiments, which can capture most aerosols in the dental clinic and prevent them from spreading.Clinical relevance Using three-channel suction devices during oral treatment effectively reduces the spread of oral aerosols, which is essential to prevent the spread of epidemics and ensure the health and safety of patients and dental staff.

show abstract

Characteristics of droplets emission immediately around mouth during dental treatments

Xing,

Ai,

Liu

et al. 2024

Building and Environment

View full text Add to dashboard Cite

Bioaerosol distribution characteristics and potential SARS-CoV-2 infection risk in a multi-compartment dental clinic

Cited by 15 publications

References 67 publications

Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices

Visualization of droplets and aerosols in simulated dental treatments to clarify the effectiveness of oral suction devices

Study of aerosol dispersion and control in dental practice

Characteristics of droplets emission immediately around mouth during dental treatments

Contact Info

Product

Resources

About