Abstract
Aims: The objective of the present study was to investigate the presence of SARS-CoV-2 in aerosol and COVID-19 contamination distance asssociated with ultrasonic scaling and tooth preparation.
Methods: Twenty-four patients with COVID-19 were included in this study. Removal of supragingival plaque with ultrasonic instruments for 10 minutes and high-speed air-turbine using for the simulation of cutting the maxillary right canine tooth with a round diamond bur for 5 minutes were performed. Patients were randomly assigned to 2 groups: In group A, medium-volume suction was used during treatment. In group B, high-volume suction with an aerosol cannula was added to medium-volume suction. Prior to treatment, 5 glass petri dishes containing viral transport medium were placed in the operating room. After treatment, petri dishes were immediately delivered to a microbiology laboratory for real-time polymerase chain reaction (RT-PCR) analysis.
Results: RT-PCR test results were negative for all specimens in group B. However, 5 positive test results for COVID-19 were detected in group A specimens.
Conclusions: Suction with an aerosol cannula is very important to prevent COVID-19 viral contamination via aerosol. In addition, a high-volume suction capacity (air volume) of 150 mm Hg or 325 L/min is sufficient for elimination of viral contamination. Thus, high-volume suction should be used during dental treatments in COVID-19 patients.
Keywords: Aerosol; Covid-19; PCR test; Scaling; Suction.
【저자키워드】 COVID-19, aerosol, PCR test, suction., Scaling, 【초록키워드】 Treatment, SARS-CoV-2, aerosol, RT-PCR, Elimination, Operating room, Laboratory, polymerase chain reaction, Simulation, Contamination, PCR, real-time polymerase chain reaction, canine, PCR test, specimens, COVID-19 patients, RT-PCR test, Analysis, Scaling, suction, Chain Reaction, transport medium, during treatment, Volume, Viral transport medium, specimen, removal, positive test result, Prevent, Randomly, polymerase chain, Canine tooth, tooth, performed, was used, addition, added, assigned, COVID-19 contamination, patients with COVID-19, 【제목키워드】 SARS-CoV-2, investigation, dental, Presence,