Abstract
BackgroundOccupational and chronic exposure to solvents and metals is considered a possible risk factor for Parkinson's disease and essential tremor. While manufacturing dental prostheses, dental technicians are exposed to numerous chemicals that contain toxins known to affect the central nervous system, such as solvents (which contain n-hexane in particular) and metals (which contain mercury, iron, chromium, cobalt and nickel).MethodsWe performed an epidemiological and clinical study on all 27 dental technicians working in a school for dental technicians. We asked all the technicians to fill in a self-administered questionnaire on extrapyramidal symptoms, and the General Health Questionnaire (GHQ), a self-administered screening instrument, to detect any psychiatric disorders. Moreover, we invited all 27 dental technicians to undergo a neurological examination and provide a detailed occupational history in our clinic.ResultsOf the 14 subjects who underwent the neurological examination, four had postural tremor and one had a diagnosis of Parkinson's disease.ConclusionWe found a high prevalence of extrapyramidal signs and symptoms in this group of male dental technicians working in a state technical high school in Rome. We believe that this finding may be due to the presence of toxins in the dental technician's work.
Highlights
Occupational and chronic exposure to solvents and metals is considered a possible risk factor for Parkinson's disease and essential tremor
We found a high prevalence of extrapyramidal signs and symptoms in this group of male dental technicians working in a state technical high school in Rome
We found a high prevalence of extrapyramidal signs and symptoms in a group of dental technicians working in a state technical high school in Rome
Summary
Occupational and chronic exposure to solvents and metals is considered a possible risk factor for Parkinson's disease and essential tremor. Dental technicians are exposed to numerous chemicals that contain toxins known to affect the central nervous system, such as solvents (which contain n-hexane in particular) and metals (which contain mercury, iron, chromium, cobalt and nickel). BMC Neurology 2007, 7:24 http://www.biomedcentral.com/1471-2377/7/24 occupational exposure to solvents (OR = 1.89; 95 CI% 1.2–2.7) [2] Another analytical epidemiological study indicated a possible association between exposure to mercury and PD [3]. Dental technicians are exposed during the manufacture of dental prostheses to numerous chemicals that contain toxins known to affect the central nervous system, such as solvents (which contain n-hexane in particular), metals (which contain mercury, iron, chromium, cobalt and nickel) and bisphenol-A [9].
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