Advanced Nonsurgical Endodontic Retreatment and Fractured Instrument Removal Seminar & Hands-On Course

Advanced Nonsurgical Endodontic Retreatment and Fractured Instrument Removal Seminar & Hands-On Course is organized by OHI-S and will be held from Feb 22 - 23, 2027 in Warsaw, Mazovia, Poland.

Program:
With Yoshi Terauchi, you will expand your expertise in endodontics, where even the most complex clinical cases are transformed into structured, predictable protocols, and clinical confidence becomes an integral part of your daily practice.

This advanced seminar by Yoshi Terauchi offers a comprehensive and systematic approach to complex endodontic treatment, including the management and shaping of C-shaped root canals, bypassing ledges, and the retrieval of separated visible and invisible instruments from curved canals, as well as instrument fractures located in the apical third of the root.

During the seminar, you will learn:
– Diagnosis and treatment planning for endodontic retreatment cases
– Management of complex root canal anatomies, including C-shaped and severely curved canals
– Contemporary approaches to the treatment of cracked teeth
– Regenerative endodontic treatment protocols
– Prevention and management of ledges, including predictable and efficient bypass techniques
– Modern concepts for predictable and minimally invasive retrieval of visible and invisible instrument fragments
– Contemporary treatment strategies for endo-perio lesions.

This is more than just a seminar — it’s the result of many years of clinical experience transformed into clear protocols and delivered directly from the lecturer to your everyday clinical practice.

IMPORTANT: the "Seminar. Comfort", "Seminar+Demonstration. VIP" and "Practical Course" participation options are also available for purchase.

Advantages of the "Seminar. Standard" participation option:
– Participation in the scientific program
– Coffee break
– Notes and handouts
– Certificate of participation
– ADA credits available upon request.

Advantages of the "Seminar. Comfort" participation option:
– Participation in the scientific program
– Coffee break
– Recording of the seminar
– Notes and handouts
– Certificate of participation
– ADA credits available upon request
– Lunch
– Priority seats in the venue

Advantages of the "Seminar+Demonstration. VIP" participation option:
– Participation in the scientific program
– Participation in the demonstration masterclasses by Yoshi Terauchi: format - free audience (February 23, 2027)
– Coffee break
– Recording of the seminar
– Notes and handouts
– Certificate of participation
– ADA credits available upon request
– Lunch
– Priority seats in the venue
– Distinct reception counter
– VIP certificate
– VIP badge
– Access to online training by Waleed Kurdi «Ledge management»
– Access to online training by Paolo Generali «Endodontic retreatment: recomendations and techniques»
– Access to online training by Arnaldo Castellucci «Modern techniques to determine an accurate working length in endodontics»
– Access to online training by Fabio Gorni «?rown and bridge removal. Posts removal»
– Access to online training by Fabio Gorni «Broken file management»

Advantages of the "Practical Course" participation option:
– Participation in the scientific program
– Coffee break
– Recording of the seminar
– Notes and handouts
– Certificate of participation
– ADA credits available upon request
– Lunch
– Priority seats in the venue
– Distinct reception counter
– VIP certificate
– VIP badge
– Access to online training by Waleed Kurdi «Ledge management»
– Access to online training by Paolo Generali «Endodontic retreatment: recomendations and techniques»
– Access to online training by Arnaldo Castellucci «Modern techniques to determine an accurate working length in endodontics»
– Access to online training by Fabio Gorni «?rown and bridge removal. Posts removal»
– Access to online training by Fabio Gorni «Broken file management»

Program
The Art of Non-Surgical Root Canal Retreatment: Yoshi Terauchi’s Protocols

– Diagnosis in Retreatment:
- How to differentiate odontogenic pain from non-odontogenic pain
- Apical periodontitis associated with occlusion.
– Management of Cracked Teeth:

- Initiation of cracks in the tooth
- How do cracks propagate, leading to apical periodontitis?
- How to manage cracked teeth.

– Crown and Post Removal:

- Predictable removal of coronal restorations
- Predictable removal of metal posts.

– Regenerative Endodontic Therapy (RET):

- Indications for RET
- Reasons for RET failure
- Procedures for regenerating pulp tissue.

– Management of Nonvisible Ledges:

- How to prepare the canal for bypassing nonvisible ledges
- Predictable techniques for instrumenting the original canal beyond the ledge.

– Predictable Instrument Retrieval of Visible and Nonvisible Broken Files:

- Three factors affecting success in nonvisible broken file removal
- Diagnosis and treatment planning for broken file removal (BFR)
- Concepts of BFR
- Core root canal preparation methods
- Main techniques for broken instrument removal (BFR).

– Management of Endo-Perio Complications:

- Diagnosis and treatment planning for endo-perio complications
- Management of endo-perio lesions.

Program
Day 1. Theory

The Art of Non-Surgical Root Canal Retreatment: Yoshi Terauchi’s Protocols

– Diagnosis in Retreatment:
- How to differentiate odontogenic pain from non-odontogenic pain
- Apical periodontitis associated with occlusion.
– Management of Cracked Teeth:

- Initiation of cracks in the tooth
- How do cracks propagate, leading to apical periodontitis?
- How to manage cracked teeth.

– Crown and Post Removal:

- Predictable removal of coronal restorations
- Predictable removal of metal posts.

– Regenerative Endodontic Therapy (RET):

- Indications for RET
- Reasons for RET failure
- Procedures for regenerating pulp tissue.

– Management of Nonvisible Ledges:

- How to prepare the canal for bypassing nonvisible ledges
- Predictable techniques for instrumenting the original canal beyond the ledge.

– Predictable Instrument Retrieval of Visible and Nonvisible Broken Files:

- Three factors affecting success in nonvisible broken file removal
- Diagnosis and treatment planning for broken file removal (BFR)
- Concepts of BFR
- Core root canal preparation methods
- Main techniques for broken instrument removal (BFR).

– Management of Endo-Perio Complications:

- Diagnosis and treatment planning for endo-perio complications
- Management of endo-perio lesions.

Day 2. Demonstration Masterclass: VIP Participants Only (23.02.2027)

Format: Observer

– Diagnosis and treatment planning for nonvisible broken instrument cases
– Canal preparation for retrieval procedures
– Ultrasonic troughing and retrieval techniques
– Combined retrieval protocols using ultrasonic and rotary systems
– Retrieval of broken instruments in simulated curved canals
– Step-by-step retrieval workflows for apical and curved canal fractures
– Clinical troubleshooting and complication prevention techniques.

Program

Day 1. Theory

The Art of Non-Surgical Root Canal Retreatment: Yoshi Terauchi’s Protocols

– Diagnosis in Retreatment:
- How to differentiate odontogenic pain from non-odontogenic pain
- Apical periodontitis associated with occlusion.

– Management of Cracked Teeth:

- Initiation of cracks in the tooth
- How do cracks propagate, leading to apical periodontitis?
- How to manage cracked teeth.

– Crown and Post Removal:

- Predictable removal of coronal restorations
- Predictable removal of metal posts.

– Regenerative Endodontic Therapy (RET):

- Indications for RET
- Reasons for RET failure
- Procedures for regenerating pulp tissue.

– Management of Nonvisible Ledges:

- How to prepare the canal for bypassing nonvisible ledges
- Predictable techniques for instrumenting the original canal beyond the ledge.

– Predictable Instrument Retrieval of Visible and Nonvisible Broken Files:

- Three factors affecting success in nonvisible broken file removal
- Diagnosis and treatment planning for broken file removal (BFR)
- Concepts of BFR
- Core root canal preparation methods
- Main techniques for broken instrument removal (BFR).

– Management of Endo-Perio Complications:

- Diagnosis and treatment planning for endo-perio complications
- Management of endo-perio lesions.

Day 2. Hands-on

Management of Nonvisible Broken File Removal

Objectives:
– Diagnosis and treatment planning
– Preparation protocols for retrieval
– Ultrasonic retrieval techniques
– Advanced retrieval techniques: combined ultrasonic and rotary instrument approaches.

During the hands-on session, participants will develop and refine manual skills using prepared models. The practical component includes:
– Diagnosis and treatment planning for nonvisible broken instrument cases
– Canal preparation for retrieval procedures
– Ultrasonic troughing and retrieval techniques
– Combined retrieval protocols using ultrasonic and rotary systems
– Retrieval of broken instruments in simulated curved canals
– Step-by-step retrieval workflows for apical and curved canal fractures
– Clinical troubleshooting and complication prevention techniques.