The progress of inflammatory periodontal disease ultimately results in attachment loss sufficient enough to affect the bifurcation or trifurcation of multirooted teeth. The presence of furcation–involved teeth in a periodontal patient influences the treatment plan. The selection of procedures that can be used for the treatment of periodontal disease in multi–rooted teeth can first be made only after the presence and depth of furcation lesions are assessed. Hemisection refers to removal or separation of roots with its accompanying crown portion of multi–rooted teeth, most likely mandibular molars. Hemisection of the affected tooth helps preserve the tooth structure, alveolar bone and promote cost savings over other treatment options. This case series describes a simple procedure for hemisection in mandibular molar by vertical cut method and its subsequent restoration.