This case was send to my clinic to retreatment of #37. There were a broken fragment in the mesial root and PAL on the same root. It looked very easy to manage , just to come and to take it out. The trouble that curvature hasn’t been shown on the Xray. I succeeded to fish it out only in at the second visit, bypassing it completely through the internal isthmus with help of ultrasonic device. Curiously enough but the iron fish was in the lingual and not in the buccal as usual. Total treatment time was 4.5 hours.
1 year year recall showed good healing around the mesial root.