title: [Case of oral lichen planus due to dental metal allergy].
abstract: METHODS
  This clinical report describes the treatment of a patient who experienced a hypersensitivity reaction associated with prosthetic restorations fabricated with a silver-palladium-copper-gold alloy.
  
  
  CONCLUSIONS
  Patch testing revealed an allergy to the palladium substrate. Allergic symptoms disappeared from the patient's mucous membrane after all the prosthetic restorations in the patient were replaced with those fabricated using some alternative alloys. The case presented indicates that the release of palladium from prosthesis fabricated with dental metal alloys is able to induce hypersensitivity reactions resulting in soft-tissue changes in the buccal mucosa.
  
  
  CONCLUSIONS
  Dental procedures as a multidisciplinary approach to the care taking of patient are presented.
authors.affiliation: Chugoku-Shikoku Branch, Namikoshi Dental Clinic. nami-ta@niji.or.jp
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Namikoshi
mesh_terms: D003722:Dental Alloys / Q000009:adverse effects*; D003778:Dentures / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000209:etiology*; D008010:Lichen Planus / Q000209:etiology*; D008875:Middle Aged; D009061:Mouth Mucosa; D010165:Palladium / Q000009:adverse effects*; D010328:Patch Tests; D013282:Stomatitis, Denture / Q000209:etiology*
chemical_list: C120982:Ag-Pd-Cu-Au alloy; D003722:Dental Alloys; D010165:Palladium