Treatment of a perforating inflammatory external root resorption with mineral trioxide aggregate and histologic examination after extraction.
BACKGROUND
Inflammatory external root resorption (IERR) requires damage or loss of the protective layer and an inflammatory process in the unprotected root surface. Infection of the pulp space can occur after a serious injury and stimulate an inflammatory response. When the inflammatory stimulus is long-standing, the destructive phase will continue until the stimulation is removed.


METHODS
This article describes the use of cone-beam computed tomography scanning in the diagnosis and management of a perforating IERR in tooth #10 with a 17-month follow-up and histologic examination after extraction for orthodontic reasons.


RESULTS
The histologic examination showed a cementum-like tissue interposed within the dentin defect. The cementum-like tissue was eosinophilic and irregular or poorly demarcated in some parts. Fibrous ligament tissue and no inflammatory response could be identified.


CONCLUSIONS
Mineral trioxide aggregate was shown to be suitable for the treatment of perforating IERR, and this finding agrees with the results observed in different studies conducted with animals.
Department of Restorative Dentistry and Endodontics, Universitat Internacional de Catalunya, Barcelona, Spain.
Juan Gonzalo
JG
Olivieri
Fernando
F
Duran-Sindreu
Montse
M
Mercadé
Noelia
N
Pérez
Miguel
M
Roig
D017607:Aluminum Compounds / Q000627:therapeutic use*; D017610:Calcium Compounds / Q000627:therapeutic use*; D002648:Child; D054893:Cone-Beam Computed Tomography; D003739:Dental Cementum / Q000473:pathology; D004338:Drug Combinations; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging / Q000293:injuries / Q000473:pathology; D008297:Male; D008437:Maxilla; D010087:Oxides / Q000627:therapeutic use*; D010513:Periodontal Ligament / Q000502:physiology; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D012390:Root Canal Therapy; D012391:Root Resorption / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology / Q000628:therapy*; D017640:Silicates / Q000627:therapeutic use*; D019228:Tooth Crown / Q000000981:diagnostic imaging / Q000293:injuries / Q000473:pathology; D014081:Tooth Extraction; D018677:Tooth Injuries / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy*; D014092:Tooth Root / Q000293:injuries
D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D012387:Root Canal Filling Materials; D017640:Silicates; C086631:mineral trioxide aggregate