[Drug-induced fluorosis].

Report of a 58 year old patient who, after a 5 year continuous treatment with altogether 146 g sodium fluoride, developed a grade II-III (Roholm) fluorosis. The fluorine treatment had been conducted for a radiologically demonstrated osteoporosis. Renal involvement was not demonstrated: serum creatinine was normal, the creatinine clearance only slightly reduced. The therapeutic goal of this continuous fluoride administration, i.e. freedom from skeletal pain and vertebral stability, was not achieved; new end plate impressions of dorsal vertebrae were found.