Hazard Identification and Physical Parameters Measurement in Dental Laboratories
DOI:
https://doi.org/10.11113/jest.v5n2.102Keywords:
Dental laboratories, Hazard identification, Particulate matter, PM10, PM2.5Abstract
Substances such as dental materials routinely used in dental procedures such as acrylate compounds, organic solvents, disinfectants can spread into air within the dental working environment and affect the indoor air quality (IAQ). This study aimed to identify the hazards at dental laboratories and measure the physical parameters of IAQ such as particulate matter (PM), temperature and humidity. Hazard Identification, Risk Assessment and Risk Control (HIRARC) analysis was conducted during walk through survey, then the area monitoring of PM10, PM2.5, temperature and humidity was conducted using particle air counter for eight hours at each dental laboratories: Prostethic Lab, Orthodontic Lab, Maxillofacial Lab, Plaster Room, Teaching Lab 1 and Teaching Lab 2. The concentration of PM10 and PM2.5 were below the acceptable level at each laboratory except for PM10 at the Prostethic Lab (205.8 μg/m3 in 2018 and 163.0 μg/m3 in 2020) which were above 150 μg/m3 as referred to the Industry Code of Practice on Indoor Air Quality 2010 by the Department of Occupational Health and Safety, Malaysia. It is important to assess the HIRARC and determine the physical parameters in dental laboratories to ensure the safety and health of the workers are guaranteed. Hence continuous monitoring and training should be conducted to ensure the prevention and control measures are efficient.
References
Al horr Y., Arif, M., Katafygiotou, M., Mazroei, A., Kaushik, A., Elsarrag, E. 2016. Impact of indoor environmental quality on occupant well-being and comfort: A review on the literature. International Journal of Sustainable Built Environment. 5(1):1-11.
De Giuli, V., Da Pos, O., De Carli, M. 2012. Indoor environmental quality and pupil perception in Italian primary schools. Build. Environ. 56:335-45.
Jia, L. R., Han, J,. Chen, X., Li, Q. Y., Lee, C. C., Fung, Y. H. 2021. Interaction between thermal comfort, indoor air quality and ventilation energy consumption of educational buildings: A comprehensive review. Buildings. 11:591.
United States Environmental Protection Agency (USEPA). 2021. Particulate matter pollution – Particulate matter (PM) basics. Updated on May 26. Available at: epa.gov/pm-pollution/particulate-matter-pm-basics#PM (Retrieved on April 28, 2022).
Mendell, M., Heath, G. 2005. Do indoor pollutants and thermal conditions in schools influence student performance? A critical review of the literature. Indoor Air Journal. 15:27-32.
Khovalyg, D., Olesen, B. 2020. Critical review of standards for indoor thermal environment and air quality. Energy and Buidings. 213:109819.
Department of Occupational Safety and Health (DOSH). 2010. Industry code of practice on indoor air quality 2010. Putrajaya: DOSH, Ministry of Human Resources, Malaysia.
Shaleh, M. K., Leman, A. M. 2016. Systematic approach for hazard identification, risk assessment and risk control (HIRARC) in workplace according to DOSH guidelines. International Graduate Conference on Engineering, Science and Humanities 2016, Universiti Teknologi Malaysia, 15-17 August 2016.
Kiersz, A., Gillett, R., Hoff, M. 2020. 47 jobs that will always be bad for your health, and how much they pay. Insider, July 14, 2020. Available at: www.businessinsider.com/most-unhealthy-jobs-in-america-2017-4%3famp.
Bernama. 2008. RM1.8 juta pulihkan Poliklinik Komuniti Ayer Keroh daripada kulat. Bernama, October 9, 2008. Available at: http://kpdnkk.bernama.com/newsBm.php?id=363427 (Accessed on April 28, 2022).
Khazi, H. 2011. JPA diserang kulat, 300 diarah bercuti Berita Harian. September 12, 2011. Available at: http://agc-wopac.agc.gov.my/edocs/2011/bh/0000021447.pdf (Accessed on April 28, 2022).
Saidi, N. D. & Anua, S. M. 2015. Exposure to particulate matter (PM10) in indoor air and lung function test among dental laboratory technologists and administration workers, Ann. Occup. Hyg., Vol. 59, No. Supplement 1, 9–10, 10th IOHA International Scientific Conference 2015, London, UK
US EPA. (2020). Review of the National Ambient Air Quality Standards (NAAQS) for particulate matter. US Environmental Protection Agency, Office of Air Quality Planning and Standards, Washington, DC. Federal Register, Vol 85, No 244. Available at https://www.epa.gov/pm-pollution/national-ambient-air-quality-standards-naaqs-pm (Retrieved on October 20, 2022)
New Malaysia Ambient Air Quality Standard. 2022. Available at https://environment.com.my/wp-content/uploads/2016/05/Ambient-Air.pdf (Retrieved on October 20, 2022)
