title: An unusual swelling following endodontic and prosthodontic treatment of a mandibular molar due to a foreign body reaction.
abstract: OBJECTIVE
  The purpose of this case report is to stress the importance of taking a proper history and the appropriate evaluation of diagnostic tests in order to prevent incorrect diagnosis and treatment. Moreover, the management of postoperative problems in a healthcare system in which specialists take on specific parts of the treatment is discussed.
  
  
  CONCLUSIONS
  This article describes the diagnosis and treatment of an unsuspected flare-up 1 week after root canal treatment. The swelling and pain appeared to be associated with an accidentally embedded piece of impression material. General practitioners and specialists should be aware of alternate treatment plans and treatment procedures and take these into consideration whenever there is a postoperative problem to be solved.
  
  
  CONCLUSIONS
  Impression materials can cause a foreign body reaction when embedded in the soft tissues. History taking and evaluation of diagnostic tests are of paramount importance in order to prevent incorrect diagnosis and treatment. Both general practitioners and specialists have the responsibility to evaluate patients with a broad vision.
authors.affiliation: Department of Cariology Endodontology Pedodontology, Academic Centre for Dentistry Amsterdam, The Netherlands. M.Ree@acta.nl
authors.forename: M H
authors.initials: MH
authors.lastname: Ree
mesh_terms: D000328:Adult; D003442:Crowns; D003760:Dental Impression Materials / Q000009:adverse effects*; D003794:Dental Restoration, Temporary; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D005547:Foreign Bodies / Q000150:complications*; D005549:Foreign-Body Reaction / Q000209:etiology*; D005881:Gingiva / Q000473:pathology; D005891:Gingivitis / Q000209:etiology*; D006801:Humans; D011176:Post and Core Technique; D012389:Root Canal Obturation; D012390:Root Canal Therapy
chemical_list: D003760:Dental Impression Materials