Abstract:

Objective: The success of endodontic treatment depends on the possibility to properly identify and assess all root canals in order to prepare, irrigate and finally obturate them.

Aim: The aim of this review article is to describe the main variations in the root canal system of upper first and second molars and to emphasize on the advantages of CBCT, which allows conducting a non-invasive analysis of the morphology of the root canal system.

Methods: A review of related articles, studies and publications is conducted in order to summarize the main morphology types of the root canal system of upper first and second molars.

Results: The internal morphology of maxillary first and second molars is complex. Most variations occur in the mesio-buccal root where the root canal system configuration can vary according to the ethnical differences of the investigated patients.