title: O-nitro-paraphenylenediamine in hair dye - an unusual dental hazard.
mesh_terms: D000328:Adult; D004396:Coloring Agents / Q000009:adverse effects*; D003756:Dental Hygienists; D003877:Dermatitis, Contact / Q000209:etiology*; D009783:Dermatitis, Occupational / Q000139:chemically induced*; D005260:Female; D006801:Humans; D010655:Phenylenediamines / Q000009:adverse effects*
chemical_list: D004396:Coloring Agents; D010655:Phenylenediamines