Endodontic Treatment of Premolar Teeth with Different Root Canal Anatomy: Two Case Reports and Literature Review

Thorough knowledge of the anatomy and morphology of the root canal system is necessary for successful endodontic treatment. Lack of information about anatomic variations and their properties in different teeth has been shown as being one of the main causes of endodontic treatment failure. Therefore, in our study, we reported on cases using cone-beam computed tomography for the diagnosis of teeth with different root canal structures and operation microscopes in order to enhance effective treatment.