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| Pre-operative x-ray |
Previous root canal treatment. It appears that there are spaces in the root canal system that have not been negotiated or cleaned, especially the distal root.
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| Post-operative x-ray |
Note: 3 files in distal root
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| Photo: 5 canal orifices |
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| Post-operative x-ray |
All canals were cleaned and filled to the radiographic apex.
Comments:
Though teeth may have multiple canal systems and some of the canals may meet apically, a dirty canal will inevitably cause periapical symptoms as contamination may occur from the unclean canal. A canal obturated with gutta percha will not stop contamination from a neighboring canal that joins it.
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