What Dental Technicians Need to Know About Silicosis
New Jersey Department of Health and Senior Services Occupational Health Survellance Program
http://www.state.nj.us/health/eoh/survweb/dent_bro.pdf
(requires Adobe Acrobat Reader, available here)
This brochure for workers in dental laboratories describes the work-related lung disease silicosis, sources of silica exposure, methods for controlling exposure to silica, and briefly summarizes other occupational health hazards found in dental laboratories.

A Guide to Working Safely with Silica
If it's silica, it's not just dust
U.S. Department of Labor
National Institute for Occupational Safety and Health
http://www.cdc.gov/niosh/pdfs/silicax.pdf
(requires Adobe Acrobat Reader, available here)
If you work, or you are an employer, in one of the dozens of industries where dust containing silica is present, you need to know how to prevent this disease. This guide explains how you can protect yourself and others each day on the job.

Safety and Health Topics: Dentistry
U.S. Department of Labor
Occupational Safety & Health Administration
http://www.osha.gov/SLTC/dentistry/
Dental professionals are at risk for exposure to numerous biological, chemical, environmental, physical, and psychological workplace hazards. These hazards include but are not limited to the spectrum of bloodborne pathogens, pharmaceuticals and other chemical agents, human factors, ergonomic hazards, noise, vibration, and workplace violence.

Silicosis State Contacts and Other Information
http://www.cdc.gov/search.do?action=search&queryText=silicosis&x=9&y=11
"CDC - Centers for Disease Control and Prevention, Department of Health and Human Services facts and links about Silicosis."