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2022, Number 6

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Rev ADM 2022; 79 (6)

Study of the morphology of root canals of the first upper premolars in cone beam computed tomography.

Carosi MJ, Antoniuk AV, Benítez LE, Nart LJ, Valle MG, Félix GA, Sanchis SB, Vázquez DJ

Language: Spanish
References: 20
Page: 312-317
PDF size: 263.68 Kb.


ABSTRACT

Objective: to analyze, using cone beam computed tomography (CBCT), the frequency of the type of internal morphology of the root canals according to the Vertucci classification and the number of roots of the first upper premolars. Material and methods: 100 first upper premolars were evaluated with CBCT, which corresponded to 30 female and 20 male patients in the Chair of Diagnostic Imaging of the Faculty of Dentistry, University of Buenos Aires. Variables were studied: number of roots, type of internal morphology, age, sex and side. The tomography of the upper jaw with both first premolars in dental, periodontal and closed apex health, a 100 × 90 mm volumetric acquisition and a voxel size of 150 µm were selected. An axial cut was used, observing the apical, middle and cervical third of pieces 1.4 and 2.4. Each premolar was analyzed with 30 paraxial cuts. The Vertucci classification was used to group the different anatomical variables of the root canals of the first upper premolars which consists of VIII typologies. Results: the most representative type among the top 100 upper premolars within the Vertucci classification was type IV (two separate ducts from the chamber to the apex). The type coincidence between the right (78%; 95% CI: 65 to 87%) and left (70%; 95% CI: 56 to 81%) sides was significant. The distribution according to the number of roots on the right (χ2 = 2.88) and left (χ2 = 0.72) did not present significant heterogeneity. The coincidence of the number of roots between the right and left sides was significant. Conclusion: the most frequent type of internal morphology, the number of roots and their variability according to side, sex, and age were verified; which is of relevant importance to perform a correct instrumentation and obturation of the root canal system.


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