Analysis of Root Canal Anatomy of Mandibular Permanent Incisors in Saudi Subpopulation: A Cone-Beam Computed Tomography (CBCT) Study

Abstract

This study aimed to evaluate the root canal anatomy of central and lateral mandibular incisors in a Saudi population using cone-beam computed tomography (CBCT). Overall, 1370 CBCT images of central (687) and lateral (683) mandibular incisors of Saudi patients who attended the Dental College at King Saud University in Riyadh were examined. The number of roots and canals, canal configuration types, symmetry between bilateral incisors, and the effect of gender and age were determined. For data analysis, the chi-square test was applied, and the p value was set at ≤0.05. Only one tooth had two roots, and 41% of mandibular incisors had two canals. The most common canal configuration type observed was type I (58.83%), followed by type III (28.24%). Type V was more common in men (8.31%) than women (3.9%). Bilateral symmetries were higher in the mandibular central incisors regarding the root and canal numbers and the canal configuration types (100, 100, and 97.92%, respectively) than in the lateral incisors (99.69, 98.16, and 97.24%, respectively). The 21–40 age group showed a higher proportion of teeth with more complicated root canal anatomy than the other age groups. More than one canal in mandibular incisors is a common finding in the Saudi subpopulation, with the type III canal configuration as the most common type.

Radiographic assessment of root canal morphology of mandibular central incisors using new classification system: A cross-sectional study

“…Meanwhile, Al-Fouzan et al, [ 23 ] utilizing staining and clearing techniques, observed that about one-third of the Riyadh population had 2 canals in their mandibular incisors. Mohamed et al [ 24 ] reported that a single root with 2 root canals was the most common root canal configuration in the mandibular incisors of a Saudi subpopulation in the Qassim region.…”

“…Some examples are improving the nickel-titanium (NiTi) rotary and reciprocating the instrument, using ultrasonic equipment for effective disinfection, and using different obturation techniques, such as continuous wave and hydraulic obturation (single cone with hydraulic silicate cements). [ 24 , 25 ]…”

“…Some examples are improving the nickel-titanium (NiTi) rotary and reciprocating the instrument, using ultrasonic equipment for effective disinfection, and using different obturation techniques, such as continuous wave and hydraulic obturation (single cone with hydraulic silicate cements). [24,25] As for the root canal anatomy, an oval-shaped root canal will make adequate shaping and cleaning complex because the instrument will not be able to touch the recesses and fins on the lingual and buccal aspects of the canal. This irregular morphology, which does not match the round instrumentation system, may leave bacteria inside the root canal, and the level of bacteria in the root canal will determine whether the periradicular inflammation will be sustained.…”

Anatomia e kanalit të rrënjës së incizivëve mandibularë në popullatën e Kosovës – studim in vitro

“…Po ashtu, grupet e dhëmbëve mund të kenë variacione anatomike me incidencë të ndryshme. Shumica e incizivëve mandibularë kanë një rrënjë të vetme me një kanal [6], mirëpo konfigurimi i kanalit të rrënjës në incizivët mandibularë mund të jetë i komplikuar me praninë e variacioneve anatomike, si kanali i dytë i rrënjës, kanali lateral i rrënjës dhe delta apikale [7]. Studimet kanë treguar se prevalenca e dy kanaleve në incizivët mandibularë sillet prej 11-70% [8][9][10][11].…”