AIHce 2019: Q&A with Michael Ierardi

Posted on Behalf of  Michael Ierardi

Between today and the start of AIHce 2019, the Cardno ChemRisk View will feature a series of presentations as described by staff. First up is Michael Ierardi from our Brooklyn, New York office. 

1.       What was the title of your presentation?
Characterization of airborne asbestos exposures from the use of dental products: a comprehensive review

2.       What was the scope of your research?
We performed a comprehensive literature review to quantify potential airborne asbestos exposures associated with the typical use and manipulation of asbestos-containing dental products, including casting ring liner and periodontal dressing powder. In doing so, we sought to characterize any potential health risks incurred by professionals who historically worked with these products, such as dentists, dental technicians, and other dental professionals.

3.       What did you find? 
The weight of evidence demonstrates that any potential airborne asbestos exposures from working with asbestos-containing casting ring liner or periodontal dressing powder, expressed as 8-hour time-weighted average (TWA) concentrations, would not have exceeded the current or historical 8-hour Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL) or the American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV) (0.1 f/cc or greater) for asbestos. Moreover, maximum cumulative asbestos exposures for dental professionals associated with the typical use and manipulation of asbestos-containing dental products are well below published no and lowest observed adverse effect levels (NOAEL, LOAEL) for mesothelioma.


4.       What are the next steps / what other research is needed?
As noted in recent reports by the Centers for Disease Control and Prevention, respiratory diseases due to mixed dust expsures continue to be an important occupational health issue for dental professionals. Moving forward, we should continue to research and quantify these exposures to adequately address any health concerns in this working population.

For more information, please contact Michael Ierardi.