
Furcal perforation is usually an undesired complication that can occur during preparation of endodontic access cavities or exploring canal orifice of multirooted teeth. Inadequacy of the repair materials has been a contributing factor to the poor outcome of repair procedures. On the basis of several studies carried out and assess the physical and biologic property of Biodentin, it was concluded that this material may be suitable for closing the communication between the pulp chamber and the underlying periodontal tissues. The purpose of this case report was to describe the treatment of a furcal perforation using Biodentin in a mandibular molar. The perforation site was irrigated with saline solution and sealed with Biodentin with internal matrix. The teeth was endodontically treated and coronally restored. After one year, the absence of periradicular radiolucent lesion, pain and swelling along with functional tooth stability indicated a successful outcome of the sealing procedure.