Non-Surgical Root Canal Retreatment. Clinical Protocols by Yoshi Terauchi

— The lifestyle of Yoshi Terauchi
— The financial aspects of endodontic treatment by Yoshi Terauchi
— Critical thinking: Why should endodontic treatment be more expensive than placing a dental implant?
— Review of articles and textbook chapters published by Yoshi Terauchi
— Extraction or management of hopeless teeth with large periapical lesions
— Retreatment and periapical healing
— Extraction vs implants vs endodontic retreatment
— Management of cases involving retrieval of broken instruments inside the canals.

— Four reasons to remain highly successful in endodontic retreatment
— Goals of endodontic retreatment
— Definition of success in endodontics
— Differentiating odontogenic and non-odontogenic pain
— Healing of apical periodontitis: literature review
— Understanding the process of delayed healing and the progression of healing
— The three sources of pain
— Diagnosis in endodontic retreatment cases
— Post-endodontic restoration failure and its impact on the prognosis of endodontic therapy
— Understanding the pain response in inflamed pulp
— Periapical pathology
— Percussion and pulp diseases.

— Psychogenic pain and its understanding in dentistry
— Neuropathic tooth pain after endodontic procedures
— Factors that can induce psychogenic pain and the descending pain inhibitory system
— Understanding “happy hormones” and serotonin production in relation to dental practice
— Phantom tooth pain: analysis of cases of non-odontogenic pain misdiagnosed and treated endodontically
— The flowchart of tissue damage: from pain to healing.

— The effect of restoration quality on the prognosis of endodontic treatment
— The prognosis of endodontic treatment depending on the coronal restoration
— The sealer-based obturation (SBO) technique
— The continuous wave condensation (CWC) technique
— The difference between the single cone (SC) technique and the continuous wave condensation (CWC) technique
— MTA as a root canal filling material
— External apical root resorption associated with apical periodontitis
— Targets to remove in retreatment cases
— Step-by-step protocol for the prevention of coronal leakage using composite material
— Problems with gutta-percha (GP) root canal fillings and GP-centered infection
— Instruments and step-by-step protocols for gutta-percha (GP) removal
— Step-by-step protocols for the removal of external gutta-percha (GP) fillings.

— Video demonstration of the removal technique for gutta-percha filling
— Single-visit endodontics
— Analysis of clinical cases of gutta-percha removal and root canal obturation with MTA
— Removal of MTA obturation material using ultrasonics and EDTA
— Step-by-step video demonstration of the removal of set MTA obturation material
— Biofilm removal protocols
— Application of the Piezoflow for debris removal within the root canals
— Biofilm removal using Self-Adjusting Files (SAF) and the XP-endo Finisher
— Video demonstration of the application of the XP-endo Finisher.

— Management of ledged canals
— Characteristics of ledge formation
— Prevention of ledge formation and instrument fracture
— Analysis of different root canal file tip designs
— Crown-down technique and shaping
— Working with bi-conical file tips
— Video demonstration of ledge management using bi-conical file tips and rotary instrumentation
— Techniques to bypass an invisible ledge
— Selection of files and rotation settings for bypassing a ledge
— Application of the AI Motor with T-mode by Woodpecker
— T-mode techniques for bypassing ledges
— Techniques for bypassing invisible ledges with MP NiTi rotary files
— Bypassing ledges in S-shaped canals
— Analysis of clinical cases and video demonstration of the protocols.

— Three factors affecting the success of broken file removal (BFR)
— The procedure for broken file removal (BFR) and canal preparation in a funnel shape
— Diagnosis and treatment planning for broken file removal (BFR)
— Do you need to remove every single broken instrument?
— Prognosis of retained instruments
— Broken instruments in relation to healing
— Case study: broken instrument with a preoperative periapical lesion in retreatment
— Accurate CBCT diagnosis and treatment planning.

— Characteristics of mechanical removal of broken instruments
— Surgical approach to removal of broken instruments
— Application of ultrasonic tips for broken instrument removal
— Placement of ultrasonic tips inside the canal
— Protocols for ultrasonic activation without pecking motion
— Drawbacks of using ultrasonics and how to manage them
— What type of irrigant is best for instrument retrieval
— Step-by-step video demonstration of using ultrasonics for instrument retrieval.

— Key canal preparation techniques for broken instrument removal
— Application of the Terauchi File Removal Kit (TFRK)
— Protocols for canal enlargement
— Protocols for retrieving separated instruments using the Terauchi File Removal Kit (TFRK)
— The 10-second rule when working with the ultrasonic tip from the Terauchi File Removal Kit (TFRK)
— Removal of broken instruments with MP NiTi files.

— Recommended irrigant when removing a broken file beyond the curve with ultrasonics
— Application of the TFRK loop
— Preparation for the use of the TFRK endodontic loop
— Removal of broken instruments with the XP-Endo Shaper
— Rational speed in relation to torsional fatigue and cyclic fatigue
— Video demonstration of working with the TFRK endodontic loop
— Step-by-step analysis of clinical cases.

— Removal of broken instruments beyond the apical foramen
— Application of Piezoflow and XP-Endo Finisher
— Step-by-step analysis of clinical cases of broken instruments beyond the apical foramen
— Flowchart of broken file removal treatment plan
— Protocols for single-visit endodontic treatment
— Why MTA obturation over gutta-percha in non-surgical retreatment cases?
— Canal preparation for MTA and preparation for gutta-percha: comparison of the two techniques
— Comparison of properties between MTA and gutta-percha
— Advantages of MTA non-surgical retreatment prior to micro-endodontic surgery.

— Histological assessment of MTA application and literature analysis
— Step-by-step MTA obturation procedure
— MTA obturation using 812MT with sonics
— Detailed analysis of clinical cases from diagnosis to post-treatment healing monitoring.