What does “Endodontic retreatment” mean?
Endodontic retreatment involves removing the existing filling material and treating the root canals again when infection or a lesion persists or recurs in a previously root canal-treated tooth. The cause and conditions affecting whether the tooth can be preserved are assessed first.
Original spelling: 근관 재치료
Why might treatment be needed again?
Possible factors include a canal missed during the first treatment, complex anatomy, leakage around a restoration, or new decay. Causes that retreatment alone may not resolve, such as a fracture, also need to be distinguished.
What is repeated during retreatment?
The inside of the tooth is accessed, the existing root canal filling is removed, and missed canals or infected areas are examined. After cleaning and shaping, the canals are filled again, and a coronal restoration helps reduce recontamination and fracture.
How does it differ from surgery?
Endodontic retreatment usually accesses the canals through the top of the tooth. Apical surgery approaches the root tip through the gum; the cause and feasibility of access guide the choice.
Frequently Asked Questions
Does every existing crown need to be removed?
A crown or post may need to be removed depending on access and the condition of the restoration. Whether an existing prosthesis can be reused is assessed separately.
Can retreatment prevent extraction?
It may provide an opportunity to preserve the tooth, but a vertical root fracture or severe tissue loss can limit this option. Discuss the outlook based on the cause and remaining support.
Questions about endodontic retreatment
Learn what the term means and how it relates to your dental condition.
- Sufficient understanding
Why has the tooth not healed?
Explanation and evidenceImaging is compared with the existing treatment and restoration to identify causes that can be addressed again.
American Association of Endodontists · Endodontic Retreatment - A choice suited to your condition
Is the final restoration planned after retreatment?
Explanation and evidenceBoth treatment inside the canals and sealing and protection of the top of the tooth are needed.
American Association of Endodontists · Endodontic Surgery
