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April 2nd, 2021

by Dr. Margaret Scarlett, Dr. Likith Reddy, Justin Bernstein

A new study published by JADA+, Photocatalytic Oxidizers as a Novel Device for Bacterial Reduction in Dental Surgical Bays – Dr. Margaret Scarlett and colleagues, evaluates the effectiveness of active air disinfection at reducing micro-burdens in the oral surgery department of a dental school. The study concludes that active air disinfection is a promising solution to reducing harmful particles in the air especially for dental environments. The abstract for the study reads:

“Abstract

Background
The COVID-19 pandemic has underscored the need to reduce air and surface pathogens in publicly occupied indoor spaces. This study evaluates the effects of an advanced photocatalytic (APC) air purification system on both the air and surface microbial burden in a dental school oral surgery department.

Methods
Samples were collected from two operatories, where aerosol generating procedures were regularly performed, for three consecutive days prior to use of APC units, and for three consecutive days two weeks after a CASPR Compact APC unit was installed and running continuously in each room. Total aerobic bacterial counts were measured in the air and on surfaces using agar settling plates (n = 36) and cellulose environmental testing sponges (n = 60).

Results
The APC units yielded a 76% reduction (p = 0.0015; 95% confidence interval, 17 to 529 CFUs) in the aerobic bacterial count measured on surfaces, and a 58% reduction (p = 0.0012; 95% confidence interval, 35 to 95 CFUs) in the aerobic bacterial count measured in the air.

Conclusions
The APC air purification system provides a promising solution to reduce air and surface microbial burden in dental environments, where aerosol generating procedures are regularly performed.

Practical Implications
Dental clinics produce high amounts of bioaerosols and likely present higher risks for disease transmission. Implementing APC air purification technology may help to mitigate risk.”

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