Endo–perio lesions: A dilemma

Endo–perio lesions are a common finding in dental practice. Progression of an endodontic lesion, if allowed leads to periodontal involvement or vice versa. This is a case series of two cases of the endodontic lesion with periodontal involvement that has been treated by performing root canal treatment followed by flap surgery. The tooth was first endodontically treated that was followed by periodontal treatment. Six months postoperatively, there was a significant gain in clinical attachment level. Radiographically, there was a significant amount of bone fill observed.