Prevalence of Apical Periodontitis in a Public Dental Service in Northern Brazil

Apical periodontitis (AP) is characterized by a peri-root inflammatory process presented the host's immune response, from infections that affect root canal system. The objective of this study was to verify prevalence apical lesions in digital periapical radiographs performed public dental care service northern region Brazil. To end, 3967 on patients seen 2019 were analyzed and classified using Ørstavik index (PAI). A total 7172 teeth analyzed. Four hundred twenty-one these had already received endodontic treatment with filling. AP without equivalent 14.6%. In TE, 33.5%. overall prevalence, when at least one tooth an individual periodontitis, 49.9%. found lower than reported worldwide but still considered high specific population indicates need for directing policies improve condition.