Combined periodontic-endodontic lesions are localized, circumscribed areas of bacterial infection originating from either dental pulp, periodontal tissues surrounding the involved tooth or teeth or both.

Cause

Combined periodontic-endodontic lesions take the form of abscesses and can originate from either or both of two distinct locations and may be informally subclassified as follows: Neither the prognosis, treatment nor expected treatment outcome depend on the source of the infection. A combined lesion may also be the result of a fractured tooth.

Treatment

Treatment includes conventional endodontic therapy followed by conventional periodontal therapy. If the lesion is deemed too severe for treatment, the involved tooth may require extraction.