Considerações sobre a remoção de instrumentos fraturados no interior de canais radiculares

Abstract

Fracture of endodontic instruments inside root canals, usually caused by incorrect use, fatigue, and poor flexibility is a complication that may lead to the treatment failure. The permanence of the fragment inside the canal may not normally lead to any problems, which will depend on factors such as fracture location, presence of periapical lesion and pulp status. The removal of these fragments is still questionable, as is the most suitable technique for resolving cases. Thus, the present work aimed to carry out a literature review about the techniques and devices used to remove fractured instruments inside root canals, as well as to discuss the factors that lead to the occurrence of this complication. According to the researched literature, several methods are proposed for removing them from the root canal, highlighting the ultrasonic device, the use of a hypodermic needle with cyanoacrylate, the “Masserann kit” and the use of files of smaller caliber. It was concluded that it is necessary for the dentist to combine technical and scientific knowledge to solve each case, once despite the various techniques and devices available, there is still no standard protocol for the removal of these fragments. Therefore, the best way to ensure success is to prevent instrument fracture.