Innovations in dental science and the higher patient expectations that appear when the periodontal disease affects the furcation area have led to a more conservative treatment approach to save teeth. Bicuspidization is a surgical procedure performed to separate the mesial and distal roots of molars with its crown portion, where both segments are then retained individually. This separation eliminates the existence of a furcation and facilitates an effective oral hygiene practice. This procedure will maintain the dentition with a hopeless periodontal prognosis. The objective was to describe the conservative management of a grade II furcation-involved molar, with good oral and general conditions, by bicuspidization procedure. The condition of the tooth and its supporting tissue were in accordance with the success factors of bicuspidization. A 59-year old female patient complained about her lower molar. The clinical examination showed the necrotic pulp in tooth 47. The radiographic view showed a radiolucency on the occlusal of teeth, spreading to the furcation area. Bicuspidization was performed to maintain the molar. The roots were separated mesial and distal. Prefabricated fiber post was used, and the crown was restored with porcelain fused to metal (PFM) in two smaller crown portions. This bicuspidization produces a satisfying result, as inflammation was not found, and both the occlusion and gingiva are in normal condition. Bicuspidization may be a suitable alternative to extraction and implant, which should be discussed with patients during the consideration of treatment options. The prognosis of the tooth with bicuspidization depends on the supporting bone, the restoration, and the patient's oral hygiene. This case report presents the successful bicuspidization.