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Meta Description: Dental laboratory technicians have multiple occupational exposures, which may have adverse effects on their health. The potential occupational risk factors include chemical, physical, psychological, ergonomic, and other job-related factors.
The substances to which dental technicians are exposed include heavy metals from the base metal alloys and some other materials that are used in the fabrication of dental prosthesis. Indeed, base metal alloys have become widely used in dental practice as cast materials and especially used for the construction of metal core in metal-ceramic restorations and the construction of Co-Cr metal framework of removable partial denture (RPD) (cobalt-chromium). In general, these alloys consist of 35-65% cobalt (Co), 20-30% chromium (Cr), 0-30% nickel (Ni) and small amounts of molybdenum (Mo), silica, beryllium, boron and carbon.
The use of scalp hair and fingernails samples in an assessment of environmental and occupational metal exposure has received a great deal of attention in the literature. In the past few years human hair and fingernails have been recognised as an invaluable tissue and more attractive diagnostic tool in assessing heavy metals in human body with environmental exposure. Nowadays there is an increasing interest of scalp hair and fingernails in the fields of medical, biological, forensic, and environmental sciences, they can be easily sampled collected, stored and prepared for analysis.
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