Excessive fluoride.
Greenberg
L W
LW
D002648:Child; D003743:Dental Enamel / Q000737:chemistry; D003919:Diabetes Insipidus / Q000150:complications*; D004326:Drinking; D005457:Fluoridation; D005459:Fluorides / Q000032:analysis; D009050:Fluorosis, Dental / Q000209:etiology*; D006801:Humans
D005459:Fluorides