Are aerosol control devices effective in preventing the spread of dental aerosol?

PeerJ

article

Elif Seher Böke¹  Ali Keleş¹  Cangül Keskin¹  Yeliz Tanrıverdi Çaycı²  Tugba Turk³ 

[1] Department of Endodontics, Faculty of Dentistry, Ondokuz Mayis University;Department of Medical Microbiology, Faculty of Medicine, Ondokuz Mayis University;Deapartment of Endodontics, Faculty of Dentistry, Ege University

关键词: Aerosol;    COVID-19;    Endodontics;    Enterococcus faecalis;    Dentistry;    Aerosol control devices;   

DOI  :  10.7717/peerj.13714

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundIn dental clinics, aerosols produced from dental instruments have become a matter of concern following breakout of coronavirus disease 19 (COVID-19) evolving into a pandemic. This study compared aerosol reduction systems and in terms of their ability to reduce Enterococcus faecalis (E. faecalis) contaminated aerosol in a simulated dental office set-up.MethodsClosed clinic model with manikin and mandibular molar typodont was simulated. For 10 min, the air and water dispersed by the rotating bur mounted on an aerator was contaminated by pouring the suspension containing 1–3 × 108 CFU/mL E. faecalis directly on the bur. During and after the procedures, the air within the cabin was also sampled. CFU count was recorded and scored. The mean CFU scores obtained from agar plate count and air sampling device was compared using Kruskal–Wallis H test among groups with 5% significance threshold.ResultsThe use of WS Aerosol Defender device led to greater CFU scores on the agars levelled to patient’s chest compared to other directions (p = 0.001). Combined use of VacStation and WS Aerosol Defender resulted in significantly decreased CFU score in the air samples compared to experimental and positive control groups (p = 0 < 0.05).ConclusionsAlthough the devices prevented the spread of aerosol around the patient to some extent, they could not completely eliminate the contaminated aerosol load in the cabin environment.

【 授权许可】

CC BY