Biomaterial Database

Release of asbestos fibers during casting ring liner manipulation. 1995

D R Davis

Department of Restorative Dentistry, University of California, San Francisco, USA.

Civil lawsuits have been filed that allege wrongful deaths of at least one dentist and one dental technician from asbestos exposure. However, no known published scientific studies support such allegations. To assess what potential exposure could occur, air samples were collected while casting rings were lined with asbestos liner. Fibers were collected on filters and counted by use of phase-contrast microscopy and transmission electron microscopy. The concentrations of fibers 5 microns long or greater on all filters was less than allowed by federal guidelines. Based on this simulation the potential health risk from using asbestos ring liner seems low.

UI	MeSH Term	Description	Entries
D007754	Laboratories, Dental	Facilities for the performance of services related to dental treatment but not done directly in the patient's mouth.	Dental Laboratories,Dental Laboratory,Laboratory, Dental
D008452	Maximum Allowable Concentration	The maximum exposure to a biologically active physical or chemical agent that is allowed during an 8-hour period (a workday) in a population of workers, or during a 24-hour period in the general population, which does not appear to cause appreciable harm, whether immediate or delayed for any period, in the target population. (From Lewis Dictionary of Toxicology, 1st ed)	Maximum Permissible Exposure Level,MPEL,Maximum Permissible Exposure Concentration,Allowable Concentration, Maximum,Allowable Concentrations, Maximum,Concentration, Maximum Allowable,Concentrations, Maximum Allowable,MPELs,Maximum Allowable Concentrations
D003735	Dental Casting Technique	The process of producing a form or impression made of metal or plaster using a mold.	Casting Technic, Dental,Casting Technics, Dental,Casting Technique, Dental,Casting Techniques, Dental,Dental Casting Technic,Dental Casting Technics,Dental Casting Techniques,Technic, Dental Casting,Technics, Dental Casting,Technique, Dental Casting,Techniques, Dental Casting
D004781	Environmental Exposure	The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.	Exposure, Environmental,Environmental Exposures,Exposures, Environmental
D006708	Homicide	The killing of one person by another.	Murder,Killing,Wrongful Death,Death, Wrongful,Deaths, Wrongful,Homicides,Killings,Murders,Wrongful Deaths
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014481	United States	A country in NORTH AMERICA between CANADA and MEXICO.
D014489	United States Occupational Safety and Health Administration	An office in the Department of Labor responsible for developing and establishing occupational safety and health standards.	OSHA,Occupational Safety and Health Administration (U.S.),Occupational Safety and Health Administration,Occupational Safety, Health Administration, United States,United States Occupational Health Administration,United States Occupational Safety Administration,United States Occupational Safety, Health Administration
D016902	Air Pollution, Indoor	The contamination of indoor air.	Air Quality, Indoor,Indoor Air Pollution,Indoor Air Quality,Pollution, Indoor Air
D017632	Asbestos, Serpentine	A type of asbestos that occurs in nature as the dihydrate of magnesium silicate. It exists in two forms: antigorite, a plated variety, and chrysotile, a fibrous variety. The latter makes up 95% of all asbestos products. (From Merck Index, 11th ed, p.893)	Chrysotile,Serpentine (Mineral),Serpentine Asbestos,Antigorite,Asbestos, Serpentine, Chrysotile (Mg3(OH)4(Si2O5))