Endodontic Retreatment

A tooth is said to have failed RCT when it shows following symptoms even after considerable period of time once the treatment is over

  • Unsalvable peri-apical pathology
  • Pain
  • Swelling
  • Mobility of tooth
  • Sinus formation (Pus discharge from surrounding area in gums)


Possible findings and reasons for above symptoms

  • Missed canals
  • Incomplete obturation
  • Over obturations
  • Perforations
  • Separated instruments in root canals
  • External root resorption
  • Coexistent periodontal- periradicular lesion
  • Developing apical cyst
  • Silver points with peri-apical pathology
  • Accessory canal unfilled
  • Constant trauma

Mode of Retreatment

(A) NON-SURGICAL – DONE BY ORTHOGRADE ROUTE AND IS FOR TREATING

  • Missed canals
  • Poor obturations
  • Peri-apical Pathology
  • Instrument fragmentation
  • Root Perforations
  • Posts removal

(B) MICRO SURGICAL – DONE BY RETROGRADE APPROACH TO MANAGE

  • Calcified Canals
  • Root resorptive defects
  • Root resection
  • Instrument fragmentation
  • Irretrievable posts
  • Non-negotiable ledging
  • Root perforation
  • Symptomatic overfilling