Salvaging of a true endo-perio lesion

The pathways for the spread of bacteria between pulpal and periodontal tissues have been discussed with controversy. treatment and prognosis of endodontic-periodontal diseases vary and depend on the cause and the correct diagnosis of each specific condition. one treatment modality in such cases involves separation of two roots in the furcation area with selected removal of one root. this decision is based on the extent and pattern of bony loss,root trunk and root length,ability to eliminate the osseous defect,and endodontic and restorative considerations. this article is an attempt to provide a rational approach to the endo-perio question in order to treat these lesions with predictable success.