Aerosol reduction efficacy of different intra-oral suction devices during ultrasonic scaling and high-speed handpiece use

Piela, K., Watson, P., Donnelly, R., Goulding, M., Henriquez, F. L., MacKay, W. and Culshaw, S. (2022) Aerosol reduction efficacy of different intra-oral suction devices during ultrasonic scaling and high-speed handpiece use. BMC Oral Health, 22, 388. (doi: 10.1186/s12903-022-02386-w) (PMID:36068515) (PMCID:PMC9447970)

Abstract

Background: The COVID-19 pandemic led to significant changes in the provision of dental services, aimed at reducing the spread of respiratory pathogens through restrictions on aerosol generating procedures (AGPs). Evaluating the risk that AGPs pose in terms of SARS-CoV-2 transmission is complex, and measuring dental aerosols is challenging. To date, few studies focus on intra-oral suction. This study sought to assess the effectiveness of commonly used intra-oral suction devices on aerosol mitigation. Methods: Ultrasonic scaling and high-speed handpiece procedures were undertaken to generate aerosol particles. Multiple particle sensors were positioned near the oral cavity. Sensor data were extracted using single board computers with custom in-house Bash code. Different high-volume and low-volume suction devices, both static and dynamic, were evaluated for their efficacy in preventing particle escape during procedures. Results: In all AGPs the use of any suction device tested resulted in a significant reduction in particle counts compared with no suction. Low-volume and static suction devices showed spikes in particle count demonstrating moments where particles were able to escape from the oral cavity. High-volume dynamic suction devices, however, consistently reduced the particle count to background levels, appearing to eliminate particle escape. Conclusions: Dynamic high-volume suction devices that follow the path of the aerosol generating device effectively eliminate aerosol particles escaping from the oral cavity, in contrast to static devices which allow periodic escape of aerosol particles. Measuring the risk of SARS-CoV-2 transmission in a dental setting is multi-factorial; however, these data suggest that the appropriate choice of suction equipment may further reduce the risk from AGPs.

• Item Type: Articles
• Additional Information: Study supported by Dentsply Sirona. KP is supported by a BBSRC Training Grant BB/W510099/1 Industrial CASE CSV.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Henriquez, Dr Fiona and Watson, Mr Paddy and Piela, Dr Krystyna and Culshaw, Professor Shauna and MacKay, Mr William
• Authors: Piela, K., Watson, P., Donnelly, R., Goulding, M., Henriquez, F. L., MacKay, W., and Culshaw, S.
• College/School: College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing; College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
• Journal Name: BMC Oral Health
• Publisher: BioMed Central
• ISSN: 1472-6831
• ISSN (Online): 1472-6831
• Copyright Holders: Copyright © 2022 The Authors
• First Published: First published in BMC Oral Health 22: 388
• Publisher Policy: Reproduced under a Creative Commons License