| Autor: |
B D, Dinman, M J, Elder, T B, Bonney, P G, Bovard, M O, Colwell |
| Rok vydání: |
1976 |
| Předmět: |
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| Zdroj: |
Journal of occupational medicine. : official publication of the Industrial Medical Association. 18(1) |
| ISSN: |
0096-1736 |
| Popis: |
1. Fifty six aluminum smelter workers with 10 to 43 years' occupational exposure, and who had been previously studied medically, were re-x-rayed. Average urinary fluoride concentrations since 1960 were estimated to range from 2.78 mg/liter preshift and 7.71 mg/liter postshift. 2. Roentgenographic studies in 1960-66 and 1974 failed to reveal any evidence of fluoride associated bony change. 3. Although these workers represent a self-selected group, their magnitude and duration of exposure far outweighs any other group working at present or in the past at this plant. The implication that they have uniformly self-selected as fluoride resistant individuals is improbable. 4. These data indicate that group post-shift ur a long period is not associated with enhanced risk of bony fluorosis. If preshift urinary fluoride concentrations are less than 4 mg/l, the same results appears to apply. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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