Multiple lesions of intracoronal resorption of permanent teeth in the developing dentition: a case report

The purpose of this case report is to describe an unusual presentation of multiple lesions of intracoronal resorption in the permanent teeth in a healthy boy. Longitudinal radiographs demonstrated that all 3 lesions were acquired after the crowns were completely formed. Unlike previous reports in which intracoronal radiolucencies have been found in unerupted teeth or in newly erupting teeth, one lesion in this case developed in a fully erupted tooth, which was differentiated from internal resorption and invasive cervical resorption of the root. All were considered idiopathic external resorption, but they demonstrated diversities in size, appearance, and involvement of pulp and the rate of progression. Conservative treatment was performed. All remained asymptomatic, showing normal root development. This case report indicates that intracoronal resorption is a condition demonstrating a diversity of clinical features.