Evaluation of the Pulp Space Morphology of the Mandibular Premolars in a Greek Population by Cone Beam Computed Tomography.

Background/Objectives: This study aims to evaluate the pulp space morphology (PSM) of both first and second mandibular premolars in a sample of a Greek population using cone beam computed tomography (CBCT). Methods: Two hundred and ninety nine CBCTs of a Greek population were assessed to evaluate the PSM using Vertucci's classification. CBCTs were prescribed for non-endodontic reasons. Results: In the aforementioned data set, the most common PSM was Vertucci's 1 (V1) in all subgroups of mandibular premolars. V3 was the second most frequent PMS in the #34 group (10.67%), and it was V5 in the #35 group (3.1%), V3 in the #44 group (14%), and V8 in the #45 group (2.7%), with the rest of the morphologies being sparse. Across the four teeth, there was a statistically significant difference in Vertucci class distribution (p = 0.001). No significant difference was found between genders (p = 0.120); bilateral symmetry analysis showed high concordance for both premolars. Conclusions: Within the limitations of this study, it is concluded that the reported pulp space morphology in the mandibular premolars of a Greek sub-population sample presented as less complicated compared to other similar reports of (sub)-populations of different descent.