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Supporting Your Practice

Systematic Interpretation of Dental Radiographs, Episode 8: Using the Observation Checklist to Reach a Differential Diagnosis

Dr. Bob Wood, specialist in oral and maxillofacial radiology at Princess Margaret Cancer Centre, joins Dr. John O’Keefe in the 8th episode of our video presentation series to help clinicians systematically review and interpret radiographs. Using real clinical cases, Dr. Wood articulates the required steps for accurate interpretation that leads to a precise diagnosis using an observation checklist and diagnostic sieve.

In this 8th episode, Dr. Wood revisits case study images from episode 7 and guides viewers through systematically application the observation checklist and diagnostic sieve in real-time to reach a differential diagnosis.

Read/download the transcript of the conversation (PDF)

Download the Observation Checklist (PDF)

Previous Episodes in the Series

Oasis Moment/Preview (2.05″)

Watch the Full Conversation (30.34″)

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Until next time!

CDA Oasis Team


  1. Anonymous April 10, 2019

    I appreciate to your presentation. I have a question. I am working as an associate. If a hygienist takes intra, extraoral x-rays, and then dentists read and diagnose with them, who has the right for the interpretation fee? Hygienist or dentist?

    Thank you.

    1. Anonymous April 14, 2019

      In Ontario, hygienists do not have the authority to take and interpret radiographs under the RHPA. They are HARP certified to take the image once you have weighed clinical benefit/risk and prescribed it. You as the dentist would have ordered the radiograph for a specific clinical indication, and would interpret it, and therefore would be eligible to receive associated fees. How the hygienist is remunerated for the capturing of the image under your order is a separate issue.

  2. Varjan Mensurian May 22, 2020

    This is really helpful for daily practice. I really appreciate your presentations.

  3. Kayvan Ashnaei November 25, 2020

    Thanks for the presentations. they are Very informative and useful.

  4. Kourosh Milani March 29, 2021

    Very informative and great presentation. The Checklist facilitates the radiographic interpretation. Thank You.


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