Because mandibularmolars are the first teeth to erupt in the oral cavity, they have a high caries susceptibility index, necessitating careful application of oral hygiene procedures. Anyneglect of maintenance can result in major issu es such as furcation involvement. Bisection/bicuspidizationis the separation of the mesial and distal roots of mandibularmolars, as well as the crown area, and the retention of these segments separately. These teeth can function as standalone mastication units or as abutments in simple fixed bridges.

Keywords : Bicuspidization, Furcation, Mandibular molars and Nabers probe.