The root canal was completed. The tooth didn't heal.

✔ A persistent periapical lesion.
✔ Symptoms returning months after treatment.
✔ A missed canal, a separated instrument, or a post in the way.

The clinical question becomes:
Retreat now, or choose a different path?

In retreatment, success depends less on technique and more on one thing first: understanding why the original treatment failed.

• Biological, anatomical, and technical causes of endodontic failure
• Clinical and radiographic assessment of the failed case
• Case selection: when retreatment is predictable, and when it isn't
• Managing obturation materials, missed anatomy, separated instruments, posts, and ledges
• Disinfection strategies in previously treated canals
• Real retreatment cases and the decisions behind them

1· Identify the true cause of failure before starting treatment
2· Assess failed cases clinically and radiographically with a clear sequence
3· Select cases for retreatment with greater predictability
4· Approach common retreatment obstacles with a structured plan
5· Apply effective disinfection in previously treated canals
6· Make confident, evidence-based decisions on failed endodontic cases

5 M: Introduction - Prof. Dr. Wagih Tarek - Overview and clinical relevance

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35 M: Scientific Lecture - Prof. Dr. Wagih Tarek Failure - Diagnosis - Decision - Retreatment - Clinical Cases

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5 M: Live Q&A - Open questions with Prof. Dr. Wagih Tarek

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5 M: Upcoming Training Overview - Program details and next step