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Root Canal “System”

Root Canal “System”. The complexity of the root canal system cannot be underestimated. All portals of exit must be sealed to ensure elimination of periradicular pathology. Retreatment. Retreatment. Retreatment. Retreatment. Flexipost cemented in palatal canal – ultrasonic removal

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Root Canal “System”

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  1. Root Canal “System” The complexity of the root canal system cannot be underestimated. All portals of exit must be sealed to ensure elimination of periradicular pathology

  2. Retreatment

  3. Retreatment

  4. Retreatment

  5. Retreatment • Flexipost cemented in palatal canal – ultrasonic removal • MB2 orifice not identified previously • contaminants evident in other canals

  6. Retreatment • post removed – all canals identified and negotiated • Class I inlay preparation initiated for NiTi accessibility • heated NaOCl (150o F) and EDTA left to soak in chamber and canal system throughout procedure

  7. Retreatment • canals shaped, cleaned and obturated • gutta-percha seal to orifice interface with chamber floor • bristle brush and ethanol used to remove sealer from chamber • chamber then etched with phosphoric acid in preparation for sealing of the chamber floor and canal orifices

  8. Retreatment • dentinal adhesive (PQ1) used in conjunction with Permaflo to create bonded composite layer over the canal entrances to the root canal system as well as close any furcal canals • further layering of core material can be applied after micro-etching • bonded core depth sufficient to preclude need for post placement

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