Fig. 1

Pre - Op Radiograph & CBCT , showing a lower 1st molar with a separated instrument & a separated instrument and having a prosthetic crown which makes the non surgical retreatment step difficult.

Fig. 2

POST OP , Resection of mesial root with separated instrument & Distal Root with Missed Anatomy.

Clinical Video

Fig. 3

Post Op and 3 YEARS Follow Up CBCT

Bone regeneration at surgical site

Conclusions

The Clinician must have enough knowledge about the root canal anatomy , techniques and to know how to deal with errors if happened as well to know the limitation of surgical and non surgical treatment. 

Bibliography

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