Detection and analysis of dental dust concentration in the department of prosthodontics

doi:10.19439/j.sjos.2022.02.005

Abstract

Abstract: PURPOSE: To detect and analyze dental dust pollution in the department of prosthodontics and propose reasonable protective measures. METHODS: Individual dust sampling pumps were used to detect the concentration of respirable dust produced by five common dental materials (hard resin base, advanced artificial teeth, photosensitive plastic, cobalt-chromium alloy, veneering ceramics) in the department of prosthodontics. X-ray diffraction (XRD) was used to detect the concentration of free silica respirable dust in veneer porcelain dust. Inductively coupled atomic emission spectrometry (ICP-AES) was used to detect the thoracic dust of cobalt element and the inhalable dust concentration of chromium element in cobalt-chromium alloy dust. The results were compared with the occupational exposure limits set by China and the United States. RESULTS: The respiratory dust concentration of the five common dusts in the department of prosthodontics was far lower than occupational exposure limits set by China and the United States. The concentration of free silica in veneer porcelain, cobalt and its compounds in cobalt-chromium alloys were below the lower detection limit. Chromium and its compounds can be detected, and its concentration was also far below the occupational exposure limit. CONCLUSIONS: Problem of dust pollution in the department of prosthodontics exists, which is mainly caused by heavy metal pollution (such as chromium). Protective measures such as ventilation and wearing professional mask should be taken to protect the health of dental practitioners.

Key words: Dental dust, Dust concentration, Dust prevention

CLC Number:

R783.1

YANG Xiang-wen, ZHONG Qun, WANG Jue. Detection and analysis of dental dust concentration in the department of prosthodontics[J]. Shanghai Journal of Stomatology, 2022, 31(2): 138-141.

References

[1] 李进哲. 粉尘职业危害的防范措施[J]. 化学工程与装备, 2020, 3(3): 254-255.
[2] Soderholm SC.Proposed international conventions for particle size-selective sampling[J]. Ann Occup Hyg, 1989, 33(3): 301-320.
[3] Quintal-Méndez JR, Soledad AR, López-Hernández E, et al.Pulmonary alterations among workers in a dental prosthesis laboratory: exploring high dust concentrations and novel findings of bacterial genera in the workplace to achieve improved control[J]. J Occup Environ Med, 2020, 62(11): 930-936.
[4] Cokic SM, Ghosh M, Hoet P, et al.Cytotoxic and genotoxic potential of respirable fraction of composite dust on human bronchial cells[J]. Dent Mater, 2020, 36(2): 270-283.
[5] Iliadi A, Koletsi D, Eliades T, et al.Particulate production and composite dust during routine dental procedures. a systematic review with meta-analyses[J]. Materials (basel), 2020, 13(11): 2513-2513.
[6] Stoeva I.Respiratory symptoms of exposure to substances in the workplace among dental laboratory technicians[J]. Med Pr, 2020, 72(2): 105-111.
[7] Alavi A, Shakiba M, Nejad A, et al.Respiratory findings in dental laboratory technicians in rasht (north of iran)[J]. Tanaffos, 2011, 10(2): 44-49.
[8] Bozkurt N, Yurdasal B, Bozkurt A, et al.Respiratory systems of dental technicians negatively affected during 5 years of follow-up[J]. Balkan Med J, 2016, 33(4): 426-433.
[9] 卫星红, 唐秀秀, 张绍国, 等. 聚丙烯酸树脂系列中残留单体的测定[J]. 中国药品标准, 2021, 22(3): 208-215.
[10] Keul C, Seidl J, Güth J, et al.Impact of fabrication procedures on residual monomer elution of conventional polymethyl methacrylate (PMMA)-a measurement approach by UV/Vis spectrophotometry[J]. Clin Oral Investig, 2020, 24(12): 4519-4530.
[11] Ayaz EA, Durkan R, Koroglu A, et al.Comparative effect of different polymerization techniques on residual monomer and hardness properties of PMMA-based denture resins[J]. J Appl Biomater Funct Mater, 2014, 12(3): 228-233.
[12] 李岩, 黄博, 张少锋. 甲基丙烯酸甲酯单体对小鼠肝、肺、肾功能的影响[J]. 实用口腔医学杂志, 2008, 24(1): 53-56.
[13] Hoy RF, Chambers DC.Silica-related diseases in the modern world[J]. Allergy, 2020, 75(11): 2805-2817.
[14] Julander A, Hindsén M, Skare L, et al.Cobalt-containing alloys and their ability to release cobalt and cause dermatitis[J]. Contact Dermatitis, 2009, 60(3): 165-170.
[15] Kettelarij J, Midander K, Lidén C, et al.Neglected exposure route: cobalt on skin and its associations with urinary cobalt levels[J]. Occup Environ Med, 2018, 75(11): 837-842.
[16] Lison D.Human toxicity of cobalt-containing dust and experimental studies on the mechanism of interstitial lung disease (hard metal disease)[J]. Crit Rev Toxicol, 1996, 26(6): 585-616.
[17] Kettelarij JA, Lidén C, Axén E, et al.Cobalt, nickel and chromium release from dental tools and alloys[J]. Contact Dermatitis, 2013, 70(1): 3-10.
[18] Kettelarij J, Nilsson S, Midander K, et al.Snapshot of cobalt, chromium and nickel exposure in dental technicians[J]. Contact Dermatitis, 2016, 75(6): 370-376.
[19] Meding B, Wrangsjö K, Hosseiny S, et al.Occupational skin exposure and hand eczema among dental technicians-need for improved prevention[J]. Scand J Work Environ Health, 2006, 32(3): 219-224.
[20] 刘武忠, 王剑明, 张红, 等. 钴及其化合物对人体健康的影响[J]. 职业卫生与应急救援, 2016, 34(2): 111-113.
[21] Yatera K, Morimoto Y, Ueno S, et al.Cancer risks of hexavalent chromium in the respiratory tract[J]. J Uoeh, 2018, 40(2): 157-172.