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Shimon Friedman, D.M.D.

Biography

Dr. Shimon Friedman is Professor Emeritus at the Faculty of Dentistry, University of Toronto. He received the D.M.D. degree (1975) and endodontics certificate (1983) from the Hebrew University in Jerusalem, Israel. He is board-certified in endodontics in Israel and is past Chairman of the Israel Endodontic Society (1985-1988). 

Prof. Friedman had served as Head of Endodontics in Toronto for 20 years (1992-2012), and as the founding Director of the MSc Program in Endodontics for 22 years (1993-2015), which under his leadership had gained international recognition for its excellence. He has published over 250 peer-reviewed articles, textbook chapters and research abstracts, and has presented over 340 international lectures.  

Prof. Friedman is recipient of several awards, including 2006 Louis I. Grossman Award by the French Endodontic Society, 2008 Louis I. Grossman Award from the American Association of Endodontists, 2013 W.W. Wood Award from the Association of Canadian Faculties of Dentistry, 2014 Award of Distinction from the Faculty of Dentistry, University of Toronto, 2018 I.B. Bender Lifetime Educator Award from the American Association of Endodontists and Life Membership in the Omicron Kappa Upsilon Dental Fraternity, Tau Tau Chapter. In 2015, Prof. Friedman was designated an Honorary Diplomate of the Indian Board of Endodontics.

Contact information

514 Melrose Ave.
Toronto, ON M5M 2A2
Canada
Phone: 416-787-0164
Email: prof.sfriedman@gmail.com

Available Sessions

  • Outcomes and Outcome Predictors in Apical Microsurgery
    Topic:
    Learning Objectives:

    • Describe the methodological pitfalls in clinical outcome studies on apical microsurgery.
    • Identify the current best evidence for long-term outcomes of apical microsurgery.
    • Summarize the long-term outcomes and outcome predictors in apical microsurgery.

    The prognosis of apical microsurgery has for a long time been disputed because of methodological considerations that may bias reported outcomes. This lecture will define the goals of apical microsurgery and related outcome criteria, outline key considerations in appraisal of outcome studies, establish the current best evidence, and highlight the expected long-term outcomes and their predictors, in regards to healing and asymptomatic function of the surgically-treated teeth. Levels of evidence: The lecture content includes systematic reviews, randomized controlled trials and prospective cohort studies.
    One half-day lecture.

  • Retreatment, in the Era of Implants?!
    Topic:
    Learning Objectives:

    •Define key concepts for supporting the practice of retreatment in an environment biased towards extraction and replacement of teeth with post-treatment apical periodontitis.
    • Describe current strategies for case selection for retreatment or tooth extraction and replacement.
    • Outline the least invasive retreatment techniques that can be used to preserve tooth structure and restorations.

    Should we, and shall we still perform retreatments when dentists increasingly favor replacing root-filled teeth with implants? This lecture will highlight three key concepts addressing this pertinent question. First, case selection strategies must be revised recognizing implants as a viable alternative to retreatment. Second, emphasis on tooth structure conservation during retreatment is needed to maximize tooth longevity after treatment. Third, the technical possibilites and favorable prognosis of treatment should be emphatically communicated to the dental community and patients. Levels of evidence: the lecture content includes mainly prospective cohort studies.

    One half- or full-day lecture.

  • Endodontic Treatment Outcomes – The Current Best Evidence
    Topic:
    Learning Objectives:

    Describe the methodological considerations for clinical research on prognosis.
    • Identify the current best evidence for different endodontic treatment modalities.
    • Summarize the outcomes and outcome predictors for endodontic treatment modalities.

    The outcomes of endodontic treatment modalities have been debated in light of inconsistent reports on prognosis, confusing dentists and endodontists and potentially leading to skewed treatment decisions. To avoid confusion, treatment outcomes must be defined in relation to established goals and supported by the current best evidence. This lecture will define the specific outcome goals of endodontic therapy, outline criteria for appraisal of studies, establish the current best evidence, and highlight the treatment outcomes and their predictors, in regards to healing and asymptomatic function of the treated teeth. Levels of evidence: The lecture content is supported by randomized controlled trials and prospective cohort studies.
    One half-day or full-day lecture.

  • Contracted Endodontic Cavities for Extended Tooth Survival – is Less More?
    Topic:
    Learning Objectives:

    • Explain the rationale for contracted endodontic cavity designs
    • Describe how contracted endodontic cavity designs differ from traditional designs
    • Discuss the current refereed literature on the biomechanical and instrumentation efficacy impacts of contracted endodontic cavity designs

    Although survival rates after endodontic treatment are high, occurrence of tooth/root fractures is a concern, attributed to tooth structure removal associated with endodontic cavity preparation. Novel contracted endodontic cavity (CEC) designs discard traditional principles of outline and convenience form and emphasize directed dentin conservation, in line with the contemporary concept of minimally invasive dentistry. While the proposed benefit of CEC may be increased fracture resistance of teeth potentially extending long-term survival, its potential risk is compromised canal disinfection, potentially impairing periapical healing. This lecture will outline recent research that suggests different biomechanical and instrumentation efficacy impacts of CEC in specific tooth types. The potential benefits and risks associated with CEC will be debated. Levels of evidence: The lecture content is primarily supported by in-vitro research data but makes reference to survival outcome studies.

    One half-day lecture.

  • Contemporary Endodontic Treatment Outcomes Explained
    Topic:

    The recent increase in publication of outcome studies, use of various outcome terminologies and inconsistent results, have all combined to obscure the actual outcomes of contemporary endodontic treatment modalities. This is confusing to clinicians, and it may act to skew treatment decisions. To navigate the existing ambiguity, it is necessary to consider (1) why we use treatment outcomes, and (2) explicit outcome goals that may be set by informed individual patients. The context provided by the above considerations supports the determination of definitive outcomes of endodontic treatment by structured appraisal of all published studies. Studies that satisfy methodological requirements are selected as the CURRENT BEST EVIDENCE for specific treatment modalities. Their reported evidence-based outcomes are then used to inform treatment decisions.

    Following the above strategy, this lecture will highlight the outcomes of endodontic treatment in regard to periapical health, symptom-free function and survival/retention, based on the current best evidence. Clinical variables that may influence the outcomes (outcome predictors) will also be listed as supported by the current best evidence.

  • Contracted Endodontic Cavity and Canal Instrumentation – is less more?
    Topic:
    Learning Objectives:

    • Describe how various contracted endodontic cavity designs differ from traditional designs
    • Discuss the contemporary research on the various impacts of contracted endodontic cavity designs and minimal canal instrumentation/shaping
    • Debate the benefits and risks of contracted endodontic cavities and minimal canal instrumentation/shaping and the clinical options for clinicians

    The occurrence of tooth/root fracture is a well-recognized cause of tooth loss after endodontic treatment. It has been attributed to tooth structure removal associated with traditional endodontic cavity and canal instrumentation concepts. This understanding has given rise to novel Contracted Endodontic Cavity (CEC) designs that highlight directed dentin conservation while discarding traditional principles of outline and convenience form, and to minimal canal instrumentation/shaping, both in line with the contemporary concept of minimally invasive dentistry. It has been argued that tooth structure preservation directed access and instrumentation may increase fracture resistance of teeth potentially resulting in extended long-term survival; however, it has also been argued that it may compromise canal disinfection potentially resulting in impaired periapical healing.
    This lecture will describe the clinical applications of CEC and minimal canal instrumentation/shaping and review contemporary research into their possible impacts in specific tooth types. The potential benefits and risks associated with tooth structure preservation directed access and instrumentation will be debated in the context of minimally invasive endodontics, and options for clinicians to consider.

    Format: 2-3 hours (lecture)

  • The Tooth “Implant”: Intentional Replantation and Autogenous Transplantation
    Topic:
    Learning Objectives:

    • Describe the procedural guidelines and steps for Intentional Replantation, Surgical Extrusion and Autogenous Transplantation aimed to prevent external root resorption and persistent infection
    • Outline the indications for Intentional Replantation and Autogenous Transplantation
    • Summarize the long-term outcomes of Intentional Replantation, Surgical Extrusion and Autogenous Transplantation

    When orthograde retreatment and apical microsurgery are considered unfeasible, when they fail to resolve persistent endodontic infection, or when the remaining tooth structure is deemed non-restorable, the tooth is usually extracted and replaced with an implant or another prosthetic device. Alternatively, when clinical conditions permit, the tooth can be extracted, manipulated extra-orally and replanted (Intentional Replantation, Surgical Extrusion), or a non-strategic tooth can be transplanted into the socket of the extracted tooth (Autogenous Transplantation). These seemingly radical but rather simple procedures offer predictably good outcomes when the biologic principles of tooth replantation are respected.
    This lecture will discuss the procedures of Intentional Replantation/Transplantation in a contemporary context, as predictable means for retaining otherwise “untreatable” teeth to greatly benefit patients. Strict guidelines for case selection, a step-by-step protocol and a variety of clinical applications will be outlined and illustrated with typical cases. Reported outcomes will also be highlighted for various clinical applications of both procedures.

Disclosure

Sonendo Inc. Scientific Advisory Board member

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