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At least 37 records · Page 2Linked to original sources
PubMed1995

Exposure to cobalt chromium dust and lung disorders in dental technicians.

BACKGROUND: Dental technician's pneumoconiosis is a dust-induced fibrotic lung disease of fairly recent origin. This study was carried out to estimate its occurrence in Sweden. METHODS: Thirty seven dental technicians in central and south eastern Sweden with at least five years of exposure to dust from cobalt chromium molybdenum (CoCrMo) alloys, identified by postal survey, agreed to undergo chest radiography and assessment of lung function and exposure to inorganic dust. RESULTS: Six subjects (16%; 95% confidence interval 6% to 23%) showed radiological evidence of dental technician's pneumoconiosis. The lung function of the study group was reduced compared with historical reference material. With local exhaust ventilation dust levels were generally low, whereas in dental laboratories without such equipment high levels of dust, particularly cobalt, were found. CONCLUSIONS: Pneumoconiosis may result from exposure to inorganic dust in the manufacturing of CoCrMo-based dental constructions. It is possible to reduce this hazard substantially by local exhaust ventilation.

Adult↗
PubMed1998

Lung granulomatosis in a dental technician.

BACKGROUND: Dental technicians are potentially exposed to various occupational dusts and chemicals. Not surprisingly, occupational related lung diseases have been documented in this population. METHODS: We describe the case of a dental laboratory technician presenting progressive exertional dyspnea and cough. We used lung function tests, computed tomography, histological examination, mineralogical and immunological studies to characterize his condition. RESULTS: Lung function studies disclosed a restrictive pattern with a low diffusion capacity. A high-resolution CT scan revealed the presence of micronodules in both lungs corresponding to non-caseating foreign body granulomas at histological examination. Mineralogic studies showed the presence of silica, silicates, and aluminum. The lymphocytic transformation test was positive with the bronchoalveolar lavage for beryllium. CONCLUSIONS: This dental technician developed pulmonary granulomatosis. Combined histological, mineralogical, and immunological studies led us to consider the diagnosis of pneumoconiosis most likely related to occupational exposure to beryllium and aluminum.

Adult↗
PubMed1999

Pneumoconiosis among Cretan dental technicians.

Pneumoconiosis among dental technicians has recently emerged as an area of research in interstitial lung disease. This study was carried out to estimate the prevalence of pneumoconiosis in Greek dental technicians on the island of Crete. Fifty-one of the 58 dental technicians of the Heraklion Dental Technicians' Association completed an exposure history questionnaire and underwent a clinical examination, including chest radiographs, and spirometric assessment of lung volume and diffusing capacity. Values were compared with 51 control subjects. Five dental technicians showed radiological evidence of pneumoconiosis. Mean lung function values of the dental technicians, even in those with pneumoconiosis, were not significantly different from controls. No significant changes in lung function parameters were associated with smoking, exposure to metals and other contaminants. Dental technicians, however, reported more respiratory symptoms than controls (p = 0.008). Symptoms were associated to the absence of a ventilation system. We concluded that occupational exposure in dental technicians in Crete did not affect lung function. The prevalence of pneumoconiosis in this study was 9. 8%.

Adult↗
PubMed1990

Occupational contact dermatitis in 2 dental technicians.

2 dental technicians, both with chronic hand eczema, reported worsening from the use of 2 products containing methyl methacrylate, employed in manufacturing acrylic prostheses. Patch tests in both patients gave positive reactions to methyl methacrylate, ethylene glycol dimethacrylate and products employed in manufacturing acrylic prostheses (2% and 5% pet.). On the basis of results subsequently obtained from patch tests carried out with pieces of glove interposed between the skin and the allergens (methyl methacrylate and products employed), we advised our patients still to use latex gloves during work. Follow-up after 1 year showed complete regression of the dermatitis in 1 case and considerable improvement in the other.

Acrylic Resins↗