Management of separated rotary endodontic instruments: A case series

Abstract

The improper separation of endodontic instruments within the root canal system can hinder the cleaning and shaping procedures, which can affect the outcome of endodontic treatment. One effective technique for managing broken instruments is the instrument bypass technique, which is a modification of ultrasonic retrieval. This technique offers the advantage of preserving the remaining dentin in the root canal and avoiding the need for surgical intervention. In this paper, we present a case series demonstrating the successful management of accidentally and apically broken instruments in the curved mesiobuccal canal of the left mandibular second molar and in the mesiobuccal canal of the left maxillary second molar, where accessibility is poor.