Treatment of inflammatory internal root resorption with mineral trioxide aggregate: a case report

To report the treatment and follow-up of a maxillary central incisor with internal resorption managed by root canal treatment, white mineral trioxide aggregate (MTA) repair and a fibre-glass post for reinforcement.

This study presents a case of extensive internal root resorption affecting tooth 11 (FDI) in a 28-year-old male patient, with a history of trauma in that region. The substantial loss of tooth structure, including cementum, and a perforation with lateral periodontal communication were complicating factors. Despite a guarded prognosis but encouraged by a healthy periodontal condition, treatment based on reconstructing the tooth with white MTA and a fibre-glass core was carried out. Follow-up radiographs over 20 months demonstrated the maintenance of a functional tooth. The tooth did, however, discolour after MTA treatment.

Because of its insidious pathology, internal root resorption can extend to significant dimensions before being recognized. MTA plus the fitting of a fibre-glass post provided adequate, functional rehabilitation of a compromised tooth for 20 months. Despite the favourable biological and mechanical properties of white MTA, considerable tooth discolouration may occur.