Bo Chen ,Haijiang Liu ,Min Yi,Mingtao Wu ,Xiaoping Wang,Zhifeng Song,
Instrument Separation Outside the Root Canal: Handling Methods and Difficulties
Dental Oral Biology and Craniofacial Research
2020
2613-4950
http://dx.doi.org/10.31487/j.DOBCR.2020.01.06
https://www.sciencerepository.org/instrument-separation-outside-the-root-canal_DOBCR-2020-1-106 
Abstract: In endodontics, fracturing of the instrument in the root canal can arise as an inevitable problem for the
dentist, especially during the application of the metal-nickel-titanium devices to the root canal. What is
more, the broken parts of the instruments may be beyond the point of the apex, which can produce a range
of symptoms and cause additional physical and mental pain to the patients that must be relieved as fast as
possible. A few cases are available, in which the separated endodontic instruments beyond the apex are
addressed with surgical approaches, indicating that some cases can be resolved by surgical management.
However, it is difficult to achieve the ideal results often due to bleeding, a lack of clinic experience, and an
inability to accurately comprehend soft tissue activities. The best way, then, is to prevent the occurrence
entirely if possible.Keywords: Instrument separation, root canal therapy, periradicular surgery