title: Management of inflammatory external root resorption by using calcium-enriched mixture cement: a case report.
abstract: BACKGROUND
  Inflammatory external root resorption is one of the major complications after replantation of avulsed teeth. Here we report a case of inflammatory external root resorption in a maxillary left central incisor in an 11-year old male patient that was managed and treated by using calcium enriched mixture (CEM) cement.
  
  
  METHODS
  The patient's chief complaint was mobility of avulsed and replanted maxillary left central incisor and pain in chewing on left central and lateral incisors. Radiographic examination showed progressive inflammatory external root resorption of the left central incisor with an inadequately obturated root canal treatment. Both teeth were immature and had periapical radiolucencies. Both teeth were irrigated copiously with 2.5% NaOCl and obturated with CEM cement. However, the central incisor was treated with calcium hydroxide 6 weeks before CEM cement obturation.
  
  
  RESULTS
  The clinical and radiographic examinations at 3-, 6-, 12-, 24-, and 40-month follow-up showed that treated teeth were functional with normal mobility, the progression of the inflammatory external root resorption ceased, the resorptive lacunae were filled with newly formed bone, and periapical radiolucencies healed.
  
  
  CONCLUSIONS
  Considering the biological properties of CEM cement, especially its alkalinity and sustained calcium hydroxide release, using this novel cement for treatment of inflammatory external root resorption and obturation of immature necrotic teeth might be an applicable choice.
authors.affiliation: Iranian Center for Endodontic Research, Dental Research Center, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Saeed
authors.initials: S
authors.lastname: Asgary
authors.forename: Ali
authors.initials: A
authors.lastname: Nosrat
authors.forename: Amir
authors.initials: A
authors.lastname: Seifi
mesh_terms: D056624:Apexification / Q000379:methods; D017610:Calcium Compounds / Q000627:therapeutic use*; D002126:Calcium Hydroxide / Q000627:therapeutic use; D002648:Child; D003738:Dental Cements / Q000627:therapeutic use*; D003790:Dental Pulp Necrosis / Q000628:therapy; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology*; D008297:Male; D010012:Osteogenesis / Q000187:drug effects; D010087:Oxides / Q000627:therapeutic use*; D010483:Periapical Diseases / Q000628:therapy; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation; D012390:Root Canal Therapy; D012391:Root Resorption / Q000473:pathology / Q000628:therapy*; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D014084:Tooth Avulsion / Q000628:therapy; D014090:Tooth Replantation / Q000379:methods
chemical_list: D017610:Calcium Compounds; D003738:Dental Cements; D010087:Oxides; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; C016538:lime; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide