A previously root-treated tooth was followed for six years. The lesion initially regressed, but a sinus tract has appeared again. Do you think retreatment is possible?

Question

Doç. Dr. İsmail Davut Çapar · Accepted Answer

If a healed sinus tract recurs, there is probably a problem with the coronal restoration and leakage has reinfected the canals. Once the restoration is corrected, healing may be possible with another root canal retreatment.