Paget's disease of bone is a common condition characterized by increased and disorganized bone turnover which can affect one or several bones throughout the skeleton. These abnormalities disrupt normal bone architecture and lead to various complications such as bone pain, osteoarthritis, pathological fracture, bone deformity, deafness, and nerve compression syndromes. Genetic factors and environmental factors like paramyxovirus infection have been implicated in etiology. This is a case report of a patient who presented with Paget's disease and the periodontal surgical management, after the pretreatment was employed with diagnostic procedures like computed tomography and serum alkaline phosphatase tests.