Webinars > A Micro-invasive Nonsurgical Treatment Approach to External Root Resorption

A Micro-invasive Nonsurgical Treatment Approach to External Root Resorption

Saturday, November 12, 2022 | Time: 10:00 AM - 12:00 PM PST

CDE Credits: 2.00 Teaching Methods: Lecture; Live Online or Self-Instructional Video Length: 2 hours

PDL is an ADA CERP recognized provider. PDL designates this activity for 2.00 hours continuing dental education credit.

Webinar Title: A Micro-invasive Nonsurgical Treatment Approach to External Root Resorption

Presenter: Dr. Terry Pannkuk

Date Recorded: November 12, 2022

Duration: 2 hours

CDE Credits: 2.00 CDE credits will be issued by Pure Dental Learning



Root resorption is a misunderstood common complexity seen in teeth. It has historically been considered exotic and rare but in the last two decades it has become common. Extracanal invasive resorption is the most common type found and will be the primary focus of Dr. Pannkuk’s discussion. Case histories of different levels of complexity will be shown treated with recall examinations. Management strategies, CBCT mapping, prognosis assessment, treatment execution, and follow-up recommendations for restoration will be discussed in great detail. A special emphasis will be given to properties and appropriate choice of root repair materials. Dr. Pannkuk’s unique micro-invasive internal approach will be taught with important details highlighting periodontal tissue attachment and suggestions for maintaining long-term stability and function.

Course Outline

  1. Diagnosing Extracanal Invasive Resorption (ECIR)

  2. Biologic Mechanisms and Types

  3. Etiology

  4. Treatment Planning and Decision Trees

  5. Utilizing the CBCT Imaging Information and Mapping

    1. Simple Case Treatment with Mapping

    2. Molar Case Mapping with the CBCT

  6. Bioactive Material Properties

  7. Case Series of Various Types

  8. Recall Data

  9. Conclusion


At the end of this presentation the participant will be able to diagnose ECIR, plan, and assess prognosis of a variety of different case presentations. The participant will be able to employ resorption treatment techniques that will save teeth otherwise considered untreatable and restore them to health and function.

Course Evaluation

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Resources and References

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Supplementary Material

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Dr. Terry Pannkuk, DDS, MScD has no relevant commercial relationships.

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Dr. Terry Pannkuk, DDS, MScD

Dr. Terry Pannkuk, DDS, MScD


9 E Pedregosa Street, Suite B
Santa Barbara, CA 93101, United States


Dr. Terry Pannkuk, a native of California, graduated from University of California at Los Angeles with a degree in Biology, Georgetown Dental School with a D.D.S., and Boston University with an M.Sc.D. in Endodontics. He is a Diplomate of the American Board of Endodontics, former editor and publisher of The Endodontic Report, former president of the Boston University Endodontic Alumni Association, current reviewer for the Journal of Endodontics (official journal of the American Association of Endodontists), Past President of the Academy of Microscope Enhanced Dentistry, President and Founder of the Schilder Institute for the Advancement of Endodontics, Editor and Publisher of PDL (Pure Dental Learning), Volunteer Clinical Professor at the University of California at San Francisco, and international lecturer-author of topics relating to clinical endodontics. He lives and practices in Santa Barbara, California.

Resources and References

  1. Preferential Attachment of Human Gingival Fibroblasts to the Resin Ionomer Geristore - Fuwad Al-Sabek, DDS, MS, Sandra Shostad, DDS, MS, and Keith L. Kirkwood, DDS, PhD, JOE—Volume 31, Number 3, March 2005
    2. Resin-Ionomer and Hybrid-Ionomer Cements: Part I. Comparison of Three Materials for the Treatment of Subgingival Root Lesions - Mick R. Dragoo, DDS, MSD, The International Journal of Periodontics & Restorative Dentistry 1996, Vol. 17, Num. 1

    3. Resin-Ionomer and Hybrid-Ionomer Cements: Part II. Human Clinical and Histological Wound Healing Responses in Specific Periodontal Lesions - Mick R. Dragoo, DDS, MSD, The International Journal of Periodontics & Restorative Dentistry 1996, Vol. 16, Num. 6

    4. Invasive Cervical Resorption - Geoffrey S. Heithersay, Endodontic Topics 2004, 7, 73–92


Original Release Date: November 12, 2022
Review Date: TBD
*Expiration Date: November 12, 2025

CDE Credits

PDL is an ADA CERP recognized provider

ADA CERP is a service of the American Dental Association to assist dental professionals in identifying quality providers of continuing dental education. ADA CERP does not approve or endorse individual courses or instructors, nor does it imply acceptance of credit hours by boards of dentistry.

Concerns or complaints about a CDE provider may be directed to the provider or to ADA CERP at cerp@ada.org

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