Differential Diagnosis of the Different Types of Resorption

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CE Hours:


At one time, dentists were taught that there were only two types of root resorption – internal and external. As our knowledge and advances in the specialty improved, so too have the number of types of resorption. Resorptive processes in the teeth can now be classified into 11 different types. Some types of resorption can be prevented, in other cases it may be unavoidable, or undetectable. Some types are pathologic while others are normal physiological processes. In some instances resorption can be treated, in others it cannot be treated and some simply do not need treatment. In order to be able to diagnose and manage root resorption, it is essential to understand the processes involved and to be able to distinguish between the different types of resorption. Guidelines for the diagnosis and management of the various types of resorption will be provided along with a discussion of the outcomes of the recommended management protocols.

At the conclusion, participants should be able to:

  • Recognize and describe the different types of internal resorption
  • Recognize and describe the different types of external resorption
  • Employ the appropriate diagnostic tests to diagnose each type of resorption


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7 Questions
5 Questions  |  Unlimited attempts  |  4/5 points to pass
5 Questions  |  Unlimited attempts  |  4/5 points to pass
Verification Letter
2.00 CE credits  |  Certificate available
2.00 CE credits  |  Certificate available

Paul V. Abbott, B.D.Sc., M.D.S., FRACDS(Endo)

Prof. Paul Abbott is the Winthrop Professor of Clinical Dentistry at The University of Western Australia where he co-ordinates and teaches both the undergraduate and postgraduate endodontic programmes. From 1986-2002, Prof. Abbott worked mainly in private specialist Endodontic practice with part-time university appointments. In 2003, he was appointed Dean of the School of Dentistry and Director of the Oral Health Centre of WA, positions he held until 2009. From 2010-2012, he was Director of Postgraduate Studies and Research. Now he concentrates on teaching and research, as well as working part-time in private practice. He has presented over 650 lectures and courses in 40 countries. He has published 115 articles in refereed journals and 18 textbook chapters. He serves on Editorial Boards and Scientific Review Panels of 17 journals. Prof. Abbott is a Past President of the International Federation of Endodontic Associations, the Asian Pacific Endodontic Confederation and the Australian Society of Endodontology. He has been a Director of the Australian Dental Council and is now a member of the Dental Board of Australia. In 2004, he was awarded the University of Western Australia’s Excellence in Teaching Award and in 2008 the Australian Dental Association awarded him their Service Medallion.

Paul V. Abbott, B.D.Sc., M.D.S., FRACDS(Endo) 

I declare I have a past or present proprietary or relevant financial relationship or receive gifts in kind (including soft intangible remuneration), consulting position or affiliation, or other personal interest of any nature or kind in any product, service, course and/or company, or in any firm beneficially associated therewith, as indicated below

Consultant, Honorairum: OzDent Pty Ltd