Abstract: Dens invaginatus is a developmental malformation in dental morphology. The complex anatomy of affected teeth can make diagnosis and endodontic management challenging. The diagnosis, treatment and prognosis of dens invaginatus has made progress with the application of threedimensional imaging techniques such as cone beam CT combined with digital software in endodontics. Advanced treatment options such as dental operation microscope, ultrasonic technology and biomaterials bring hope for maintaining pulp vitality and teeth that could not be saved before. Treatment depends on the clinical symptoms, pulp infection, complexity of invagination, development of apical and periapical tissue destruction. The aim of this article is to review the etiology, prevalence, classification, diagnosis and management of teeth affected by dens invaginatus. Emphasis will be placed on its classification and treatment.

Key words: dens invaginatus, classification, treatment, conebeam computed tomography