RESUMEN
Furcal perforations are significant iatrogenic complications of endodontic treatment and could lead to endodontic failure.Successful treatment depends on the immediate sealing of the perforation and prevention of infection. Several materials usedinitially to repair the perforation were considered inadequate due to their bacterial leakage and lack of biocompatibility to theunderlying tissues. Recently, mineral trioxide aggregate (MTA) has been regarded as an ideal material for perforation repair,retrograde filling, pulp capping, and apexification. Successful management of an iatrogenic furcal perforation using MTA onmandibular first molar is described in this case report. The tooth was endodontically treated and coronally restored with resincomposite. After 6 months, the absence of periradicular radiolucent lesion indicated a successful outcome of sealing the furcalperforation using MTA.