[Early diagnosis and classification of occupational fluorosis].

On the basis of evaluating the clinical course and supplementary method of examination carried out in 132 patients suffering of professional fluorosis and in 200 workers in the premorbid state the author proposes criteria of early diagnosis. Considering Zislin's classification of professional fluorosis, literature data and own findings the author introduces 2 new criteria in the classification, namely, content of fluorine in the urine and length of work in this profession.