Research Article Assessment of a Biosafety Device to Control Contamination by Airborne Transmission during Orthodontic/Dental Procedures Josilene Santa Rita de Assis , 1 Aguinaldo Silva Garcez , 2 Hideo Suzuki , 1 Victor Angelo Martins Montalli , 2 Denise Nami Fujii , 1 Michelle Bertini Prouvot , 1 and Selly Sayuri Suzuki 1 1 Department of Post-graduation in Orthodontics, Faculdade Sao Leopoldo Mandic, Campinas, SP, Brazil 2 Department of Oral Microbiology, Division of Oral Medicine, Faculdade Sao Leopoldo Mandic, Campinas, Sao Paulo, Brazil Correspondence should be addressed to Selly Sayuri Suzuki; sellyszk@hotmail.com Received 11 October 2021; Accepted 23 March 2022; Published 15 April 2022 Academic Editor: Sandrine Bittencourt Berger Copyright © 2022 Josilene Santa Rita de Assis et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. During the COVID-19 pandemic, dental professionals have faced high risk of airborne contamination between dentists, staff, and patients. e objective of this study was to evaluate the effect of an individual biosafety capsule in dentistry (IBCD) on reducing the dispersion of droplets and aerosols during orthodontic treatment and evaluate the clinician and patient’s perception of using the IBCD. For the in-vitro part of the study, aerosol quantification was performed with and without the IBCD, using a nonpathogenic bacterial strain and viral strain in the reservoir and high-speed dental handpiece. Petri dishes with MRS agar were positioned from theheadoftheequipmentatdistancesof0.5,1,and1.5m.After15minutesofpassiveaerosolsampling,thedisheswereclosedand incubated using standard aerobic conditions at 37 ° C for 48 hours to count colony forming units (CFUs). For the clinical part of the study, a questionnaire was sent to clinicians and patients to understand their perception of orthodontically treat and receive treatment using the barrier. e use of IBCD showed an effective means to reduce the dispersion of bacterial and viral con- tamination around 99% and 96%, respectively, around the main source of aerosol (p < 0.05). Clinical results showed a 97% bacterial reduction during patient’s consultations (p < 0.05). e vast majority of clinicians and patients understand the im- portance of controlling the airborne dispersion to avoid contamination. 1. Introduction As some countries mitigate lockdown and quarantine measures due to COVID-19 pandemic, returning to work has become a possibility for dentists as well as students at dental schools. To become a reality, it is imperative and urgent for clinicians to review biosafety protocols during the dental procedures. Center for Disease Control and Pre- vention (CDC) and American Dental Association (ADA) have launched guides with recommendations to be adopted prior, during, and after the patient consultation for both dentists and dental healthcare personnel (DHCP) [1,2]. Among occupations, dentists are considered the highest risk group of healthcare workers at risk for contracting in- fections in general, including COVID-19 (CDC, 2020) [3]. A recent study showed that there were a 5% higher incidence of COVID-19 cases among oral health professionals compared to general population [4,5]. SARS-CoV-2 RNA was found in gingival crevicular fluid and saliva [6] in asymptomatic as well as mildly symptomatic patients who tested positive for COVID-19 through PCR [7]. is finding incites that the oral cavity probably actively participates in SARS-CoV-2 trans- mission [8]. erefore, measurements should be implemented to reduce contamination during aerosol-generating procedures (CDC, 2020) in order to safely treat even SARS-CoV-2 asymptomatic patients, as shown in this recent study [9]. Contamination is likely to be due to the nature of the dental practice, generating droplets and aerosols by high- and low-speed handpiece, and the close proximity between clinicians and patients during dental care [10]. Hindawi International Journal of Dentistry Volume 2022, Article ID 8302826, 9 pages https://doi.org/10.1155/2022/8302826