Aerosol Dispersion and Efficacy of Protective Strategies During Dental Procedures.

INTRODUCTION AND AIMS

Aerosol generation during dental procedures poses significant risks due to the potential for transmitting aerosol-bound microorganisms, including those in dental unit waterlines. This study aimed to quantify aerosol dispersion at various distances from dental procedures using a high-speed electric handpiece, with a focus on the effectiveness of various aerosol mitigation strategies.

METHODS

Employing a mannequin head with an artificial tooth (typodont), we simulated clinical settings without the use of saliva to solely assess the contribution of dental unit waterlines and mechanical factors to aerosol production. Measurements were taken using a spectrometer at distances of 0, 0.9, and 1.8 meters from the handpiece.

RESULTS

The results showed no significant difference in aerosol dispersion between 0.9 and 1.8 meters without evacuation. In contrast, the use of high-volume evacuators, particularly the Isolite system, significantly decreased aerosol dispersion across all distances.

CONCLUSION

We found that any type of high-volume evacuator can decrease aerosol dispersion, but the use of Isolite was the most effective.

CLINICAL RELEVANCE

The results from this study can influence choice of safety measures to minimize aerosol spread during dental procedures.