The advent of CBCT has contributed significantly to dental imaging. In the field of periodontics, CBCT provides a multiplanar view to assess the alveolar bone in three dimensions. This helps the dentist to make measurements at any location that could significantly improve periodontal diagnosis. Objective- The aim of this systematic review is to evaluate the accuracy of using CBCT in the assessment of alveolar bone level and furcation involvement in periodontal diseases. Materials and Methods- PubMed and Google Scholar databases were searched for literature related to the application of CBCT in periodontal diseases. Keywords used for the search were CBCT, furcation involvement, measurement and their synonyms. Results-Fifteen full-text English language research papers were eligible for the systematic review using the PRISMA guidelines. Conclusion- From the results of the systematic review it can be conclude that cone-beam computed tomography imaging technique offers significantly reliable images of the furcation involvement and height of the alveolar bone.KeywordsCone Beam Computed tomography, furcation defects, alveolar bone loss