Case of the Week: External resorption 1

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.


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One thought on “Case of the Week: External resorption

  • Dhru Shah

    Hi Dr Shawneen

    How are you ? My name is Dhru, a dental surgeon based in London and I have just come across your blog. You have some great radiology clips and notes.

    I run a dental website at – created for the dental world to share and learn. We have over 5500 members and over 700 articles on various topics in dentistry. It is free to sign up as well. It would be really great to have you sign up and perhaps if you are happy I would love to reproduce some of your blog posts as discussion articles on our website?

    Interested ? I would be very interested to hear your views

    You can contact me via

    Many thanks