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Revista de salud publica del Paraguay

On-line version ISSN 2307-3349


PEREZ, Nohelia et al. Evaluation of the dispersion of aerosols produced during the use of the dental turbine using the ejector of the equipment and/or extraoral suction. Exploratory study. Rev. salud publica Parag. [online]. 2021, vol.11, n.1, pp.28-32. ISSN 2307-3349.


Aerosols generated during dental procedures are a matter of concern in dentistry owing to their potential adverse health effects. The current pandemic of COVID-19 has required the reinforcement of infection control measures aimed at the decreasing aerosol production.


To evaluate the dispersion of aerosols produced during the use of the dental turbine using the ejector of the equipment and/or extraoral suction of the nationally manufactured SAE-I High Power Suctor (DNA Group).

Material and Methods:

An in vitro exploratory design was performed where patient care was simulated with a mannequin to an accommodation in a dental chair. Random turbine movements were performed simulating procedures for 15 minutes. Fluorescein sodium (0.1%) was introduced into the irrigation reservoirs of a high-speed air-turbine. Qualitative filter papers 12.5 centimeters in diameter were used to collect aerosols and placed, changed to 30, 60 and 90 minutes for each group. Three groups were formed: 1) control, 2) (saliva) ejector, 3) ejector + SAE-I and 4) SAE-I. Filters were photographed under ultraviolet fluorescent light and the percentage of the colored area was obtained by image processing.


It could be observed that at the instant of aerosol production the control group and SAE-I group obtained greater coloration in the distances of 30 and 60 cm. While the ejector group obtained coloration only at 60 cm and the SAE-I + ejector group at 30 cm, but both in similar proportion.


The combined use of SAE-I together and the dental ejector helped reduce aerosols produced by the dental high-speed turbine.

Keywords : Aerosols - Air Pollution; Indoor - Dental Staff.

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