The author suggests a scheme for making a clinical decision based on the following factors:
The tooth is vital or infected;
The initial or final stage of channel cleaning;
The instrument is broken before or after the apical bend.
Based on this scheme, the clinician can make a decision: try to remove the instrument, not to remove it, try to bypass it (anatomical reasons for technical procedures)
Detailed description of techniques for removing broken tools.
8. Overview of ultrasound devices and attachments in endodontics.
Spartan (MTS): CPR nozzles.
EMS / Sybroendo (minipiezon): RT1, RT2, RT3.
Satellec (P5,Newtron): ET20, ET(D)40, ET 25, K10/21/25, S04.
Osada (Enac): ST 17, ST 21.
NSK (Varios). E7, E6.
Proultra nozzles.
B&L nozzles.
Principle of operation, applications: techniques of use (direct and indirect ultrasonation), clinical recommendations, matching diameters.
9. Perforations
Modern classification, factors influencing the prognosis, treatment methods, analysis of materials for treatment: IRM, SuperEBA, MTA (ProRoot, MTA-angelous, MM-MTA).
A detailed description of the techniques, advantages and disadvantages, recommendations for clinical use and case selection. Non-advertised information on degradation of the isoprene polymer, shrinkage. histological reactions