Failure of Endo Tx

Persistant Pathology
1. Intraradicular Infection
  1. Inadequate RCT
  2. IRCT + iatr altered RC morph
  3. Inaccessible Areas
2. Extraradicular Infection
  1. Acute Periapical Cyst 5-6%
  2. Periapical Granuloma 23%
  3. Chronic Apical Periodontitis 54%
3. Pathology
  1. Foreign Body
  2. Missed Canal
  3. Vertical Root Fracture
  4. Coronal Leakage
  5. Resistant Bacteria
Surgical Procedures
1. Apicectomy
2. Incision + Drainage
3. Biopsy
4. Perforation Repair
5. Intentional Replantation
6. Surgical Extrusion
7. Root Resection
8. Tooth Resection
Apicectomy Rationale
1. Removal of
  1. Pathogenic Processes
    1. Cysts, Granu's
    2. Foreign Material
    3. Fractured Apex
  2. Anatomic Variations
    1. Deltas
    2. Accessory canals
    3. Lat Canals
    4. Calcifications
  3. Iatrogenic Errors
    1. Zips
    2. Ledges
    3. Perforation
    4. Blockage
    5. Separatd Intrumnts
Obstacles to Retreatment
1. Sep Instruments
2. Obliteration
3. Ledge
4. Diverging RCS

Resource summary

	Created by tihema.nicol about 11 years ago