non-surgical root canal treatment of dens invaginatus 3 in a maxillary lateral incisor

the aim of this case report was to describe the clinical management of an unusual dens invaginatus type 3. a case of dens invaginatus in a maxillary lateral incisor with a periapical lesion is reported. the patient presented with pain and localized swelling. despite the complex anatomy and diagnosis of dens invaginatus, non-surgical root canal treatment was performed successfully. key learning points: - dens invaginatus may be presented in different forms, and the etiology of this phenomenon is not fully understood. - due to abnormal anatomical configuration, dens invaginatus presents technical difficulties in its clinical management. - non-surgical root canal treatment can be performed successfully.