@article{article_1966708, title={Root and Canal Morphology of the Mandibular First Premolar in a Kazakh Population: A Cone-Beam Computed Tomography Study}, journal={Akdeniz Diş Hekimliği Dergisi}, volume={5}, pages={144–151}, year={2026}, DOI={10.62268/add.1966708}, url={https://izlik.org/JA22LJ72YC}, author={Tulegenova, Indira and Kopbayeva, Maira}, keywords={C-şekilli kanal, Kazakistan popülasyonu, ; konik ışınlı bilgisayarlı tomografi, kök kanal morfolojisi, mandibular birinci küçük azı dişi}, abstract={Objectives Understanding the root canal morphology of mandibular first premolars (M1Ps) is critical for effective endodontic treatment. This study aimed to evaluate the frequency and morphological variations of M1Ps in a retrospective sample from a Kazakh population using cone-beam computed tomography (CBCT). Material and Methods A total of 600 M1Ps from 300 patients were analyzed using CBCT. Root number, canal configurations according to the Vertucci and Ahmed classifications, C-shaped canal morphology, radicular grooves, taurodontism, bilateral symmetry, and demographic variables were evaluated. Results The majority of M1Ps exhibited a single root (93%), with 2-rooted teeth identified in 7% of cases; no 3-rooted forms were observed. Vertucci’s Type I (1-1) configuration was the most prevalent (72-74%), followed by Type V (1-2) in approximately 20% of cases, while Types II, III, and IV were rare ( <3%). According to Ahmed’s classification, 1MP 1-1 predominated (72-74%), followed by 1MP 1-2 (15-17%) and 2-rooted 2MP B1L1 (6.7%). C-shaped canals were detected in 17-18% of cases at the coronal third, 27-28% in the middle third, and about 20% at the apical level. Taurodontism was not observed. Conclusion M1Ps in the Kazakh population demonstrate considerable anatomical variability. While most exhibit a single root and Vertucci Type I canal configuration, complex forms such as C-shaped canals, radicular grooves, and multi-rooted morphologies occur with notable frequency.}, number={2}