title: Contact stomatitis due to palladium and platinum in dental alloys.
abstract: We report a patient with contact stomatitis due to combined sensitization to palladium and platinum. Patch testing showed strong and persistent allergic patch test reactions to palladium chloride (1% pet.), ammonium tetrachloroplatinate (0.25% pet.), and a palladium metal plate. A platinum metal plate showed a weaker reaction. Histological examination of a biopsy from the test site of palladium chloride (1% pet.) at D3 showed both eczematous and lichenoid changes.
authors.affiliation: Hautklinik der Universität des Saarlandes, Homburg/Saar, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Koch
authors.forename: H P
authors.initials: HP
authors.lastname: Baum
mesh_terms: D000328:Adult; D001706:Biopsy; D002712:Chlorides; D003722:Dental Alloys / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D010165:Palladium / Q000009:adverse effects*; D010328:Patch Tests; D010984:Platinum / Q000009:adverse effects*; D017671:Platinum Compounds; D013280:Stomatitis / Q000139:chemically induced* / Q000473:pathology
chemical_list: D002712:Chlorides; D003722:Dental Alloys; D017671:Platinum Compounds; C036919:tetrachloroplatinate; D010984:Platinum; D010165:Palladium; C008756:palladium chloride