#PAGE_PARAMS# #ADS_HEAD_SCRIPTS# #MICRODATA#

Removal efficiency of central vacuum system and protective masks to suspended particles from dental treatment


Autoři: Ming-Hui Liu aff001;  Chi-Tsung Chen aff002;  Li-Chuan Chuang aff003;  Wen-Ming Lin aff004;  Gwo-Hwa Wan aff005
Působiště autorů: Department of Pediatric Dentistry, Taoyuan Chang Gung Memorial Hospital, Taoyuan, Taiwan aff001;  Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan aff002;  Department of Pediatric Dentistry, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan aff003;  Department of General Practice Dentistry, Taoyuan Chang Gung Memorial Hospital, Taoyuan, Taiwan aff004;  Department of Respiratory Therapy, College of Medicine, Chang Gung University, Taoyuan, Taiwan aff005;  Department of Respiratory Care, Chang Gung University of Science and Technology, Chiayi, Taiwan aff006;  Department of Obstetrics and Gynaecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan aff007
Vyšlo v časopise: PLoS ONE 14(11)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0225644

Souhrn

Background

High levels of suspended particulate matters (PMs) and bioaerosols are created by dental procedures. The present study aimed to evaluate the size and concentration of PMs produced by drilling and grinding teeth, and to assess the efficiency of central vacuum system and protective masks for the removal of PMs.

Methods

A total of 20 extracted permanent teeth were collected. A novel experimental system and particle counter were used to evaluate the PMs produced by dental procedures and the PM removal efficiency of a central vacuum system and surgical/N95 masks.

Results

The number concentration of total PMs produced by drilling and grinding teeth was significantly higher than the indoor background concentration. The average aerodynamic diameter of particle was generally less than 1 μm. The average number concentration of ultrafine particles was 2.1x1011 particles/m3 during tooth drilling and grinding. The efficiency of the central vacuum system was 35.74% for PM≥0.5 and 35.41% for PM10. For PM≥0.5, the ratios of inside and outside masks were 0.8–1.34 without vacuum and 1.18–1.36 with vacuum. No difference was found with the use of surgical/N95 masks during dental therapy, with or without vacuum use.

Conclusions

High levels of PMs were found during tooth drilling and grinding procedures, especially among PM1. The PM removal efficiency of a central vacuum system and surgical/N95 masks were limited.

Klíčová slova:

Teeth – Particulates – Dentition – Aerodynamics – Nanoparticles – Dental and oral procedures – Aerosols – Respirators


Zdroje

1. WHO (World Health Organization). 2019. What is the burden of oral disease? Available from: https://www.who.int/oral_health/disease_burden/global/en/ Assessed July 6, 2019.

2. Bentley CD, Burkhart NW, Crawford JJ. Evaluating spatter and aerosol contamination during dental procedures. J Am Dent Assoc. 1994;125:579–584. doi: 10.14219/jada.archive.1994.0093 8195499

3. Harrel SK, Molinari J. Aerosols and splatter in dentistry: a brief review of the literature and infection control implications. J Am Dent Assoc. 2004;135:429–437. doi: 10.14219/jada.archive.2004.0207 15127864

4. Bennett AM, Fulford MR, Walker JT, Bradshaw DJ, Martin MV, Marsh PD. Microbial aerosols in general dental practice. Br Dent J. 2000;189:664–667. doi: 10.1038/sj.bdj.4800859 11191178

5. Grenier D. Quantitative analysis of bacterial aerosols in two different dental clinic environments. Appl Environ Microbiol. 1995;61:3165–3168. 7487047

6. Sotiriou M, Ferguson SF, Davey M, Wolfson JM, Demokritou P, Lawrence J, et al. Measurement of particle concentrations in a dental office. Environ Monit Assess. 2008;137:351–361. doi: 10.1007/s10661-007-9770-7 17505900

7. Lang A, Ovsenik M, Verdenik I, Remškar M, Oblak Č. Nanoparticle concentrations and composition in a dental office and dental laboratory: A pilot study on the influence of working procedures. J Occup Environ Hyg. 2018;15:441–447. doi: 10.1080/15459624.2018.1432864 29370575

8. Van Landuyt KL, Hellack B, Van Meerbeek B, Peumans M, Hoet P, Wiemann M, et al. Nanoparticle release from dental composites. Acta Biomater. 2014;10:365–374. doi: 10.1016/j.actbio.2013.09.044 24121193

9. Hu SW, Lin YY, Wu TC, Hong CC, Chan CC, Lung SC. Workplace air quality and lung function among dental laboratory technicians. Am J Ind Med. 2006;49:85–92. doi: 10.1002/ajim.20249 16362951

10. Al-Zubaidi ES, Rabee AM. The risk of occupational exposure to mercury vapor in some public dental clinics of Baghdad city, Iraq. Inhal Toxicol. 2017;29: 397–403. doi: 10.1080/08958378.2017.1369601 29043874

11. Hong YJ, Huang YC, Lee IL, Chiang CM, Lin C, Jeng HA. Assessment of volatile organic compounds and particulate matter in a dental clinic and health risks to clinic personnel. J Environ Sci Health A Tox Hazard Subst Environ Eng. 2015;50:1205–1214. doi: 10.1080/10934529.2015.1055129 26301846

12. Rupf S, Berger H, Buchter A, Harth V, Ong MF, Hannig M. Exposure of patient and dental staff to fine and ultrafine particles from scanning spray. Clin Oral Investig. 2015;19:823–830. doi: 10.1007/s00784-014-1300-8 25096672

13. Polednik B. Aerosol and bioaerosol particles in a dental office. Environ Res. 2014;134:405–409. doi: 10.1016/j.envres.2014.06.027 25218707

14. Szymańska J. Dental bioaerosol as an occupational hazard in a dentist's workplace. Ann Agric Environ Med. 2007;14:203–207. 18247451

15. Center for Disease Control and Prevention. The National Personal Protective Technology Laboratory (NPPTL). https://www.cdc.gov/niosh/npptl/topics/respirators/disppart/N95list1sect3.html. Assessed on September 26, 2019.

16. Rengasamy S, Miller A, Eimer BC, Shaffer RE. Filtration performance of FDA–cleared surgical masks. J. Int. Soc. Res. Prot. 2009;26; 54–70.

17. Tag El-Din AM, El-Hady Ghoname NA. Efficacy of rubber dam isolation as an infection control procedure in paediatric dentistry. East Mediterr Health J. 1997;3:530–539.

18. Harrel SK, Barnes JB, Rivera-Hidalgo F. Reduction of aerosols produced by ultrasonic scalers. J Periodontol. 1996;67:28–32. doi: 10.1902/jop.1996.67.1.28 8676269

19. Wu XM, Apte MG, Bennett DH. Indoor particle levels in small- and medium-sized commercial buildings in California. Environ Sci Technol. 2012;46:12355–12363. doi: 10.1021/es302140h 23043678

20. Darquenne C. Aerosol deposition in health and disease. J Aerosol Med Pulm Drug Deliv. 2012;25:140–147. doi: 10.1089/jamp.2011.0916 22686623

21. Checchi L, Montevecchi M, Moreschi A, Graziosi F, Taddei P, Violante FS. Efficacy of three face masks in preventing inhalation of airborne contaminations in dental practice. J Am Dent Assoc. 2005;136:877–882. doi: 10.14219/jada.archive.2005.0288 16060468


Článok vyšiel v časopise

PLOS One


2019 Číslo 11
Najčítanejšie tento týždeň
Najčítanejšie v tomto čísle
Kurzy

Zvýšte si kvalifikáciu online z pohodlia domova

Aktuální možnosti diagnostiky a léčby litiáz
nový kurz
Autori: MUDr. Tomáš Ürge, PhD.

Všetky kurzy
Prihlásenie
Zabudnuté heslo

Zadajte e-mailovú adresu, s ktorou ste vytvárali účet. Budú Vám na ňu zasielané informácie k nastaveniu nového hesla.

Prihlásenie

Nemáte účet?  Registrujte sa

#ADS_BOTTOM_SCRIPTS#