Lesions of Endodontic Periodontal Origin

The advance of the endodontic disease involves inflammatory reaction of the peri-radicular tissues while the periodontal involves marginal periodontium and results in the progressive loss of the supportive tissues. There are multiple routes of communication between the root canal space and marginal periodontium. By these communications the bacteria from the root canal space may contaminate and infect the marginal periodontium and vice versa. While in most cases the manifestation of the periodontal and endodontic diseases is clearly distinct, there are certain clinical scenarios when the signs and symptoms may be confusing, making the final diagnosis complicated and subsequently result in the wrong treatment choice.