Dental technicians are exposed to respirable particles during their everyday work. This study investigated particulate production during dental laboratory procedures. Real-time air sampling of dental laboratory production processes was carried out, including the use of a plaster hopper, trimming study models and the trimming and polishing of removable orthodontic appliances. Respirable dust volumes in mg/m(3) were determined using real-time air sampler and were compared with the Workplace Exposure Limits (WELs) advised by the Control of Substances Harmful to Health regulations. The use of the plaster hopper produced the highest level of respirable dusts, which might exceed the recommended WELs for respirable dusts. Trimming study models and removable orthodontic appliances using suitable ventilation produced levels of respirable dusts, well below the WEL. Suitable ventilation adjacent to the plaster hoppers is advisable in order to reduce any inhalation risk to dental technicians.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/jes.2011.26 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reducing Dust and Respirable Crystalline Silica Near Conveyors Using a Hybrid Dust Control System.
Min Metall Explor
November 2024
Miller Consulting, Spokane, WA, USA.
Occupational exposures to respirable dusts and respirable crystalline silica (RCS) is well established as a health hazard in many industries including mining, construction, and oil and gas extraction. The U.S.
View Article and Find Full Text PDFShort- and long-term pathologic responses to quartz are induced by nearly free silanols formed during crystal fracturing.
Part Fibre Toxicol
December 2024
Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institute of Experimental and Clinical Research (IREC), Université catholique de Louvain (UCLouvain), Brussels, Belgium.
Article Synopsis
- - The inhalation of respirable crystalline silica, particularly quartz, is linked to serious health issues like lung inflammation, fibrosis, cancer, and autoimmune diseases, with nearly free silanols (NFS) from fractured quartz being key players in this toxicity.
- - Experiments on mice showed that exposure to NFS-rich quartz caused significant acute and long-term inflammatory responses, fibrosis, cancer, and autoimmune signs, while NFS-poor quartz showed no such effects.
- - The study highlights that NFS-rich quartz specifically triggers harmful biological responses, including increased pro-inflammatory cytokines, lung fibrosis markers, tumors, and autoantibodies, underscoring its health risks compared to less reactive quartz forms.
Exposure to respirable silica contributes to lower airway inflammation in asthmatic horses.
J Vet Intern Med
November 2024
Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2-5, Turin 10095, Italy.
Background: Respirable mineral particles can induce lower airway inflammation, but the role they play in asthma of horses is unknown.
Objectives: Respirable mineral particles, particularly respirable silica, are an overlooked determinant of chronic lung inflammation (asthma) in horses.
Animals: Twenty-three horses from an equine hospital population: 11 moderately affected (MEA), 7 severely asthmatic (SEA), and 5 control horses free from respiratory clinical signs.
Particle Morphology and Elemental Analysis of Lung Tissue from Post-9/11 Military Personnel with Biopsy-Proven Lung Disease.
Int J Environ Res Public Health
January 2024
National Jewish Health, Department of Medicine, Division of Environmental and Occupational Health Sciences, Denver, CO 80206, USA.
The relationship between exposure to inhaled inorganic particulate matter and risk for deployment-related lung disease in military personnel is unclear due in part to difficulties characterizing individual exposure to airborne hazards. We evaluated the association between self-reported deployment exposures and particulate matter (PM) contained in lung tissue from previously deployed personnel with lung disease ("deployers"). The PM in deployer tissues was compared to normal lung tissue PM using the analytical results of scanning electron microscopy and inductively coupled plasma mass spectrometry.
View Article and Find Full Text PDFLab on a chip for detecting Clara cell protein 16 (CC16) for potential screening of the workers exposed to respirable silica aerosol.
Microfluid Nanofluidics
November 2023
Health Effects Laboratory Division (HELD), Centers for Disease Control and Prevention (CDC), National Institute for Occupational Safety and Health (NIOSH), Cincinnati, OH 45226, USA.
Early detection of pulmonary responses to silica aerosol exposure, such as lung inflammation as well as early identification of silicosis initiation, is of great importance in disease prevention of workers. In this study, to early screen the health condition of the workers who are exposed to respirable silica dusts, an immunoassay lab on a chip (LOC) was designed, developed and fully characterized for analyzing Clara cell protein 16 (CC16) in serum which has been considered as one of the potential biomarkers of lung inflammation or lung damage due to the respirable silica dusts. Sandwich immunoassay of CC16 was performed on the LOC developed with a custom-designed portable analyzer using artificial serums spiked with CC16 protein first and then human serums obtained from the coal mine workers exposed to the respirable silica-containing dusts.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!