This week I wanted to show a common finding on radiographs with many different causes, external resorption. Frequently external resorption is idiopathic; however it can also occur due to an inflammatory process, neoplasm or adjacent teeth. This case is external resorption due to an impacted third molar, which had been extracted shortly prior to this radiograph. Note the portion of root missing on the distal root.
For more information and other radiographs of external resorption check out my page on external resorption.