Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study
Abstract Background The COVID-19 pandemic led to concerns about the potential airborne transmission of the virus during dental procedures, but evidence of actual transmission in clinical settings was lacking. This study aimed to observe the behavior of dental sprays generated from dental rotary hand...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-12-01
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| Series: | BMC Oral Health |
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| Online Access: | https://doi.org/10.1186/s12903-023-03725-1 |
| _version_ | 1827590318041595904 |
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| author | Min Jung Kim Mana Kuroda Yoshikazu Kobayashi Takahisa Yamamoto Takako Aizawa Koji Satoh |
| author_facet | Min Jung Kim Mana Kuroda Yoshikazu Kobayashi Takahisa Yamamoto Takako Aizawa Koji Satoh |
| author_sort | Min Jung Kim |
| collection | DOAJ |
| description | Abstract Background The COVID-19 pandemic led to concerns about the potential airborne transmission of the virus during dental procedures, but evidence of actual transmission in clinical settings was lacking. This study aimed to observe the behavior of dental sprays generated from dental rotary handpieces and to evaluate the effectiveness of high-volume evacuators (HVEs) using laser light sheets and water-sensitive papers. Methods A dental manikin and jaw model were mounted in a dental treatment unit. Mock cutting procedures were performed on an artificial tooth on the maxillary left central incisor using an air turbine, a contra-angle electric micromotor (EM), and a 1:5 speed-up contra-angle EM (×5EM). Intraoral vacuum and extraoral vacuum (EOV) were used to verify the effectiveness of the HVEs. The dynamics and dispersal range of the dental sprays were visualized using a laser light sheet. In addition, environmental surface pollution was monitored three-dimensionally using water-sensitive papers. Results Although the HVEs were effective in both the tests, the use of EOV alone increased vertical dispersal and pollution. Conclusions The use of various types of HVEs to reduce the exposure of operators and assistants to dental sprays when using dental rotary cutting instruments is beneficial. The study findings will be helpful in the event of a future pandemic caused by an emerging or re-emerging infectious disease. |
| first_indexed | 2024-03-09T01:15:12Z |
| format | Article |
| id | doaj.art-f4461bb8f97f4653a5a87d5471cc3b29 |
| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-03-09T01:15:12Z |
| publishDate | 2023-12-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-f4461bb8f97f4653a5a87d5471cc3b292023-12-10T12:33:57ZengBMCBMC Oral Health1472-68312023-12-012311910.1186/s12903-023-03725-1Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro studyMin Jung Kim0Mana Kuroda1Yoshikazu Kobayashi2Takahisa Yamamoto3Takako Aizawa4Koji Satoh5Department of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, School of MedicineDepartment of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, School of MedicineDepartment of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, School of MedicineDepartment of Mechanical Engineering, National Institute of Technology, Gifu CollegeDepartment of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, School of MedicineDepartment of Dentistry and Oral-Maxillofacial Surgery, Fujita Health University, School of MedicineAbstract Background The COVID-19 pandemic led to concerns about the potential airborne transmission of the virus during dental procedures, but evidence of actual transmission in clinical settings was lacking. This study aimed to observe the behavior of dental sprays generated from dental rotary handpieces and to evaluate the effectiveness of high-volume evacuators (HVEs) using laser light sheets and water-sensitive papers. Methods A dental manikin and jaw model were mounted in a dental treatment unit. Mock cutting procedures were performed on an artificial tooth on the maxillary left central incisor using an air turbine, a contra-angle electric micromotor (EM), and a 1:5 speed-up contra-angle EM (×5EM). Intraoral vacuum and extraoral vacuum (EOV) were used to verify the effectiveness of the HVEs. The dynamics and dispersal range of the dental sprays were visualized using a laser light sheet. In addition, environmental surface pollution was monitored three-dimensionally using water-sensitive papers. Results Although the HVEs were effective in both the tests, the use of EOV alone increased vertical dispersal and pollution. Conclusions The use of various types of HVEs to reduce the exposure of operators and assistants to dental sprays when using dental rotary cutting instruments is beneficial. The study findings will be helpful in the event of a future pandemic caused by an emerging or re-emerging infectious disease.https://doi.org/10.1186/s12903-023-03725-1Coronavirus disease 2019Aerosol-generating procedureHigh-volume evacuatorDental rotary instrument |
| spellingShingle | Min Jung Kim Mana Kuroda Yoshikazu Kobayashi Takahisa Yamamoto Takako Aizawa Koji Satoh Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study BMC Oral Health Coronavirus disease 2019 Aerosol-generating procedure High-volume evacuator Dental rotary instrument |
| title | Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study |
| title_full | Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study |
| title_fullStr | Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study |
| title_full_unstemmed | Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study |
| title_short | Visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high-volume evacuators: an in vitro study |
| title_sort | visualization of airborne droplets generated with dental handpieces and verification of the efficacy of high volume evacuators an in vitro study |
| topic | Coronavirus disease 2019 Aerosol-generating procedure High-volume evacuator Dental rotary instrument |
| url | https://doi.org/10.1186/s12903-023-03725-1 |
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