Part 2: Endodontic Treatment Outcomes in 2-D and in 3-D: Impacts and Dilemmas

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Description: Knowledge of treatment outcomes empowers clinicians to (1) inform patients on prognosis for alternative treatment options, (2) assess effectiveness of specific treatment interventions, and (3) define for patients the specific post-treatment outcome of a treated tooth. The current emphasis on evidence-based endodontics and the favorable outcomes of implants have led to an increased interest in endodontic outcome studies; however, because measuring and reporting outcomes may be biased, reported outcomes vary and may misrepresent actual reality.The growing interest in endodontic treatment outcomes has generated two contemporary dilemmas: (1) Should outcomes be assessed with CBCT considering the limitations of periapical radiographs in detecting periradicular disease? (2) Should outcome assessment focus on health/disease, primarily assessed by radiographic imaging, or on absence/presence of clinical signs/symptoms? This session will address these dilemmas in three parts. It will characterize the detection ability of periradicular findings by 2D and 3D imaging. It will then define appropriate endodontic treatment outcomes and debate the possible role of 3D imaging in assessing periradicular health/disease. Finally, it will summarize the current best evidence for nonsurgical endodontic treatment outcomes with regards to periradicular health/disease and clinical signs/symptoms based on 2D imaging, and relate those outcomes to assessment with 3D imaging.

At the conclusion, participants should be able to:

  • Recognize the differences in detecting periradicular findings by 2D and 3D imaging
  • Discuss the specific goals of endodontic treatment and the associated treatment outcomes
  • Inform patients on the pre-treatment prognosis and define the post-treatment outcome based on the current best evidence


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Shimon Friedman, D.M.D.

Prof. Shimon Friedman is Professor at the Faculty of Dentistry, University of Toronto. He graduated from the Hebrew University in Jerusalem (D.M.D. in 1975 and endodontics certificate in 1983), and had taught there for 17 years. He is an Israel board-certified endodontist and served as Chairman of the Israel Endodontic Society from 1985 to 1988. Prof. Friedman served as Head of Endodontics at the University of Toronto from 1992 to 2012. In 1993 he established the first Canadian graduate Endodontics program, which he directed until stepping down in 2015. Under his leadership, the Toronto M.Sc. Endodontics Program has gained international recognition for its excellence. Prof. Friedman has published over 245 peer-reviewed articles, textbook chapters and research abstracts, presented over 300 national and international lectures, and served on the editorial boards of major endodontic journals. Prof. Friedman is a multiple award-winning researcher, educator and clinician. Among his awards are the 2006 Grossman Award by the French Endodontic Society, 2008 Louis I. Grossman Award and 2018 I.B. Bender Lifetime Educator Award by the American Association of Endodontists, 2013 W.W. Wood Award by the Association of Canadian Faculties of Dentistry and 2014 Award of Distinction by the Faculty of Dentistry, University of Toronto.

Shimon Friedman, D.MD

 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: DENTSPLY SIRONA Endodontics