Evaluation of root canal morphology of mandibular premolars in a Saudi population using cone beam computed tomography: A retrospective study

Abstract

ObjectiveTo investigate the root canal morphology of mandibular first and second premolars using Cone-Beam Computed Tomography (CBCT) in a Saudi population.MethodsCBCT images of 707 patients, number of roots and canal configuration were identified and categorized according to Vertucci classification. Bilateral symmetry and association between gender and number of roots, as well as gender and root canal configuration were investigated.ResultsMajority of the patients had one root and type I root canal configuration in mandibular first (96.4%) and second premolar (95.6%). All types of canal configurations were observed except Type VII for the mandibular first premolar, and Types VI and VII for the mandibular second premolar. High degree of bilateral symmetry was seen in both mandibular first and second premolars in terms of the number of roots and canal configuration; 93.8% and 97.8%, respectively. There was an association between gender and number of roots (P = 0.04) and gender and root canal configuration in mandibular first premolar (P = 0.030).ConclusionsSingle-root with type I canal configuration was the most prevalent of mandibular premolars in the Saudi population. However, incidence of more than one root with different canal configurations was detected.

Prevalence and morphology of multiple roots, root canals and C-shaped canals in mandibular premolars from cone-beam computed tomography images in a Thai population

“…On the contrary, the other CBCT studies in Turkish 26 , 27 and Saudi 28 populations reported the variation in root canal morphology in the mandibular first and second premolars were low and not different. The prevalence in other nationalities tended to be different and affected by the genome.…”

“…The variations in root canal morphology especially in the mandibular first premolars is more likely to be found in Asian, European, American, or African 5 , 6 , 17 , 18 , 20 , 22 , 23 , 24 at a higher prevalence than in the Middle East (or nearby) population. 26 , 27 , 28 However, the high prevalence at 17–29% of multiple root canals in the mandibular premolars of Iranian has been reported in a systematic review. 29 The prevalence of multiple root canals and C-shaped root canals in the mandibular first and second premolars from CBCT or micro-CT of other nationalities in the recently observational studies have been collected and presented in Table 3 .…”

“… 24 Spanish CBCT 22% – 4.5% – Low prevalence Alfawaz et al. 28 Saudi CBCT 3.6% – 4.4% – Bulut et al. 26 Turkish CBCT 3.8% – 1.1% – Ok et al.…”

“… 25 In contrast, less variation has been reported in Turkish, 26 , 27 and Saudi. 28 Therefore, this study aims to investigate the prevalence and morphology of multiple roots and root canals in mandibular first and second premolars in a Thai population from CBCT images.…”

Root Canal Morphology of Mandibular Premolars – Cbct Analysis

“…Mandibular premolars may have extra root, not obvious in preoperative radiograph, challenging for shaping, cleaning, and obturation. furthermore, the incidence, location, and morphology of root canal systems may vary in different ethnic or regional populations (Barakat et al, 2018;alfawaz et al, 2019).…”