Internal root resorption of permanent teeth is a rare condition. Although its etiology and pathogenesis are not fully understood, trauma has been considered a contributing factor. The treatment and prognosis of internal root resorption of permanent teeth is very challenging. In this report, we describe a patient who experienced internal root resorption of the permanent incisors soon after a traumatic episode. This suggests conservation of permanent teeth may be enhanced by early detection and treatment of this condition.