Analysis of external anatomy of maxillary first molar evaluated by cone beam computed tomography

Introduction: The success in endodontic treatment is obtained afterthorough cleaning followed by filling the whole length of root canals.Thus, knowledge on variations in the systems of root canals is veryimportant for cleanness of the root canals. Objective: Evaluate thefrequency of two palatal roots in the maxillary first molar as well as the capacity of cone beam computed tomography in diagnosed of thisvariation. Material and methods: Fifty maxillary first molars wereevaluated in 37 patients using cone beam computed tomography.Results: It was found only one tooth (2%) with two palatal roots with 4 roots and 5 canals. Conclusion: The frequency of two palatal roots is low, however it must be considered. Cone beam computed tomographyshowed effective in diagnosed of morphology of root canals and veryuseful in Endodontics.