RESUMEN
Furcation involvement remains a complex challenge to the dentist. The treatment option in most of the cases being extraction of tooth. As dentistry aims to maintain the dentition in a healthy and functional state, many procedures and treatment options are now available. Bisection or bicuspidization is the separation of mesial and distal roots of mandibular molars along with their coronal portion, where both segments are then retained individually. The recent trend to preserve the natural dentition to its fullest and the increased patient inclination towards this trend has forced the field of endodontic to seriously reevaluate the long dormant techniques of tooth preservation. The results are often predictable if the procedures performed are proper. In this paper a case is presented in which bicuspidization was done because the tooth was grossly carious along with furcation involvement. The tooth was resected from the furcation area so that they can be utilized as an individual tooth