External apical root resorption: two case reports

Aim To present two cases of external root resorption and in so doing highlight rarer causative factors as well as the difficulties in classifying root resorption. Summary Root resorption in the permanent dentition is usually pathological. Local factors are the most frequent causes of resorption, most commonly excessive pressure and inflammation. However, many systemic abnormalities have been implicated in the resorption process. Resorption is often an incidental finding during routine examination. Otherwise, late in the disease process, tooth mobility or infection may arise. A rarer form of root resorption is external apical root resorption which may or may not be linked to systemic disease. In most cases, no causative factors are found. At present there is no curative treatment for external apical root resorption. The current management for these patients is symptomatic, minimal intervention and long-term monitoring. Key learning points Apical resorption may be associated with a systemic disease or of an idiopathic origin. It may also occur in association with orthodontic treatment or with pathoses such as tumours, cysts, etc. In the absence of signs or symptoms of pulpal and/or periapical disease, endodontic treatment is not indicated. Long-term monitoring of affected patients is essential.