Root perforations following endodontics: a case for surgical management.

Despite technological advancements in dental instrumentation and techniques, endodontic mishaps remain commonplace. Perforations during access preparation, canal instrumentation, root filling, or preparation of post space are not unusual and instruments may fracture during filing or reaming or when attempting to bypass fractured instruments in the root canal. Many of these complications are hard to avoid due to extreme variations in root canal anatomy, root shapes, curvatures, and canal calcification. Procedural errors impede proper endodontic therapy and increase the risk of treatment failure; as a result, the prognosis is compromised, especially in nonvital teeth or teeth with periradicular lesions. Perforations may lead to short-term or long-term complications (that is, infection, periapical cyst, or granuloma formation); in addition, restorative material may be extruded through the perforation. Clinicians often have difficulty diagnosing and treating root perforations, particularly in posterior teeth (specifically in the area of the mandibular bifurcation); however, such complications do not mean that the tooth must be extracted. This article discusses treatment of perforations near the bifurcation of a mandibular first molar and an apical perforation in a premolar. Both teeth were salvaged via surgery without the use of additional biomaterials.