Which component of cement causes allergic contact dermatitis??
(A) Cobalt (B) Nickel (C) Iron (D) Chromium
(D) Ans : D: ChromiumMost common allergen is hexavalent chromium salts.Allergic contact dermatitis more than irritant contact dermatitis.Level of exposure needed for allergic contact dermatitis 100-400 nglcm2.Taarate, glycine, silicone, dapsone, ferrous sulphate causes conversion from chromium (VI) to chromium (III), which is less allergenic.