system from the periradicular tissues. A microsurgical technique is used to carry out apicoectomy, which improves post-operative healing.

An apicoectomy can be carried out when a previous root canal treatment fails, and re-root canal treatment is not possible. This may be as a result of anatomical features, such as root dilaceration, which can compromise the completion of cleaning and obturating the root canal system. Procedural errors, including ledges or perforations, may also be indications for an