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Keywords:

  • allergy;
  • endodontic treatment;
  • hypersensitivity;
  • immunology;
  • sodium hypochlorite

Abstract – A 12-year-old girl, with a previous history of bronchial reaction and contact dermatitis to sodium hypochlorite, was referred for root canal treatment. Complete immunologic evaluation revealed a mild hypersensitivity condition, as it was assessed by the RAST investigation to different allergens and the DTH reactivity expressed though migration inhibition test. The absence of a serious immunologic disregulation in the patient's immunologic profile justified the term ‘non-allergic hypersensitivity’ to sodium hypochlorite to describe the condition.