By Prof. Walid Nehme, Dr. Jean-Philippe Mallet, Dr. Bérenger Soulages, Dr. Mathilde Michel, Dr. Franck Diemer

Endodontic retreatment is generally considered the first choice option when failure of an initial treatment occurs. The presence of bacteria and their by-products embedded in the failing obturation material and in canal intricacies is often linked to the loss of integrity of the hermetic seal of the initial fillin , leading to the spread of post-treatment disease. It is therefore of utmost importance to remove all the root canal filling material effectively prior to negotiating the canals to their full extent.

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