title: Extrinsic tooth discoloration by metals and chlorhexidine. I. Surface protein denaturation or dietary precipitation?
mesh_terms: D011232:Chemical Precipitation; D002710:Chlorhexidine / Q000009:adverse effects* / Q000494:pharmacology; D002712:Chlorides; D003746:Dental Enamel Proteins / Q000378:metabolism*; D005290:Ferric Compounds / Q000494:pharmacology; D005502:Food; D006801:Humans; D008670:Metals / Q000009:adverse effects* / Q000494:pharmacology; D012463:Saliva / Q000502:physiology; D013662:Tea; D014002:Tin Fluorides / Q000494:pharmacology; D014075:Tooth Discoloration / Q000139:chemically induced*
chemical_list: D002712:Chlorides; D003746:Dental Enamel Proteins; D005290:Ferric Compounds; D008670:Metals; D013662:Tea; D014002:Tin Fluorides; D002710:Chlorhexidine; C024555:ferric chloride