External Cervical Invasive Resorption (ECIR) – Full Clinical Case Report

ABSTRACT External cervical invasive resorption (ECIR) represents a challenging clinical condition due to its silent progression and its potential impact on both the pulp and periodontal tissues. This report presents a Class II ECIR lesion affecting a vital mandibular first molar. The patient presented with pain, discomfort, and localized swelling mimicking a sinus tract. Radiographic examination revealed a cervical irregular radiolucency with no communication to the pulp chamber. The tooth was diagnosed with symptomatic irreversible pulpitis. Root canal treatment was performed using the Plex (Orodeka) rotary system. The perforation cavity was cleaned and repaired internally with One-Fil bioceramic putty, followed by 3D obturation using One-Fil bioceramic sealer. A permanent composite restoration was placed in the same visit. The swelling resolved…