Barriers are most effective aerosol mitigation strategy in dental clinics: Study
Barriers are the most effective dental aerosol mitigation strategy, according to a recent study published in the Journal of the American Dental Association.
A dental aerosol is an aerosol that is produced from dental instruments, dental handpieces, three-way syringes, and other high-speed instruments. These aerosols may remain suspended in the clinical environment. Dental aerosols can pose risks to the clinician, staff, and other patients. The heavier particles (e.g., >50 µm ) contained within the aerosols are likely to remain suspended in the air for a relatively short period and settle quickly onto surfaces, however, the lighter particles may remain suspended for longer periods and may travel some distance from the source. Aerosols are generated routinely during patient care in dentistry. Managing exposure risk requires understanding characteristics of aerosols created during procedures such as those performed using high-speed drills that operate at 200,000 revolutions per minute.
With thorough preoperative planning and the use of this investigation's findings of the effectiveness of mitigation strategies as a guide, dental offices may be able to return to prepandemic productivity.
A trained dentist performed drilling procedures on a manikin's incisors (teeth nos. 8 and 9) using a high-speed drill and high-volume evacuator. The authors used high-speed imaging to visualize the formation and transport of aerosol clouds and particle sampling to measure aerosol concentration and size distribution at several locations. The authors studied several aerosol mitigation strategies.
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