Management of internal resorption observed after a mineral trioxide aggregate pulpotomy in a primary molar tooth: A case report with a 36-month follow-up

This report discusses the management of an internal resorption seen after a mineral trioxide aggregate (MTA) pulpotomy in a primary molar tooth and presents the histological evaluation. Internal resorption was detected in the distal root of the primary molar tooth at the coronal third, 3 months after an MTA pulpotomy. The resorption was not expanding and was repaired with apposition. At 36 months follow-up, the tooth was extracted, and histological evaluation showed that new mature bone tissue had formed in the resorption area. In addition, a hard tissue bridge was determined at the apical region of the resorption area and pulp vitality was also maintained. The evidence from this case study suggests that internal root resorption can be self-limiting, stable, and healable.