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Dispersion of Aerosols Generated during Dental Therapy.
Takanabe, Yusuke; Maruoka, Yutaka; Kondo, Junko; Yagi, Shotaro; Chikazu, Daichi; Okamoto, Ryuta; Saitoh, Masao.
  • Takanabe Y; Department of Oral and Maxillofacial Surgery, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
  • Maruoka Y; Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.
  • Kondo J; Department of Oral and Maxillofacial Surgery, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
  • Yagi S; Department of Oral and Maxillofacial Surgery, Graduate School, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
  • Chikazu D; Department of Oral and Maxillofacial Surgery, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
  • Okamoto R; Department of Oral and Maxillofacial Surgery, Center Hospital of the National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.
  • Saitoh M; Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, Japan.
Int J Environ Res Public Health ; 18(21)2021 10 27.
Article in English | MEDLINE | ID: covidwho-1488553
ABSTRACT
The novel coronavirus pandemic has resulted in an urgent need to study the risk of infection from aerosols generated during dental care and to conduct a review of infection controls. However, existing studies on aerosol particles related to dental treatment have mainly evaluated only the scattering range. Few studies have been conducted on the specifics of the generation of aerosol particles in clinical settings, their mechanisms and patterns of distribution throughout open or enclosed spaces, the duration that they remain suspended in air, and the amount and size of particles present. To minimize the influence of background particles, laser lights, a high-sensitivity camera, and particle counters were used in a large super clean laboratory to investigate the dynamics of aerosols generated during the operation of dental micromotors. The results indicate that aerosols tend to scatter upward immediately after generation and then gradually disperse into the surroundings. Most of the particles are less than 5 µm in size (only a few are larger), and all particles are widely distributed over the long term. Our research clearly elucidates that aerosols produced in dental care are distributed over a wide area and remain suspended for a considerable time in dental clinics before settling.
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Full text: Available Collection: International databases Database: MEDLINE Document Type: Article Main subject: SARS-CoV-2 / COVID-19 Subject: SARS-CoV-2 / COVID-19 Language: English Clinical aspect: Etiology Year: 2021

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Full text: Available Collection: International databases Database: MEDLINE Document Type: Article Main subject: SARS-CoV-2 / COVID-19 Subject: SARS-CoV-2 / COVID-19 Language: English Clinical aspect: Etiology Year: 2021
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