Internal resorption (IR) is a relatively rare occurrence, and most cases follow injury to pulp tissue, such as physical trauma or caries-related pulpitis. The condition is more frequently observed in male than in female subjects.1 Although IR is a relatively rare entity,2, 3 a higher prevalence of the condition has been associated with teeth that had undergone specific treatment procedures such as auto-transplantation.4 Tooth resorption may go unnoticed for many years; often the patient is unaware of it because of the lack of symptoms. Pain may be reported if the process is associated with significant pulpal inflammation. The resorption remains as long as vital tissue remains and may result in the communication of pulp tissue with the periodontal ligaments. Usually, the clinician will discover the resorption as an unusual radiographic finding on a routine examination when periapical radiographs are taken. The patient's history will give the practitioner clues to when the tooth was last worked on and whether trauma was involved.