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6660917 
Journal Article 
Dental conditions in workers chronically exposed to dilute and anhydrous hydrofluoric acid 
Dale, PP; Mccauley, HB; , 
1948 
Yes 
Journal of the American Dental Association
ISSN: 0002-8177
EISSN: 1943-4723 
37 
(2) 
131-140 
English 
18875164 
BCI:BCI19492300007348 
Clinical and statistical analyses of data collected regarding 35 men chronically exposed to HF fumes for periods of 2-33 yrs., and 11 unexposed office and warehouse workers. Those exposed had a significantly lowered incidence of dental caries. Dental x-rays showed changes in the trabecullar and osseous structure of the jaw bones, also marked radiopacity of all the bones of the skeleton without subjective manifestations of fluoride toxicity. The fluoride excretion in the urine of those exposed had a mean of 10.78 mg./l. of urine as against a mean of 0.67 mg. in the controls. || ABSTRACT AUTHORS: D. C. Lyons