Assessment of Root Canal Morphology of Mandibular Central Incisors using New Classification System- A Clinicoradiographic Study

Abstract

Aim: To analyse the root configuration of mandibular incisors and determine the symmetry of contralateral incisors among Saudi Arabian subpopulations using Cone beam CT.

Material and methods:  A retrospective evaluation of 700 patients and 1260 fully developed permanent mandibular central incisors were assessed. The number of the root canal and internal anatomy was categorized following HMA Ahmed et al criteria. CBCT images were independently evaluated by two trained dentists and an endodontist. Data were assessed by chi-squared test and one-way analysis of variance test.

Results: All mandibular central incisors included in the study were single-rooted. According to Ahmed et al’s classification system, the most common classification was ¹ManA¹ by 82.6% (Vertucci Type I) followed by ¹ManA^1-2-1 by 13% (Vertucci Type III). The second canals were recorded more frequently in males than in female patients. The root canal configuration between contralateral incisors was largely symmetrical. 

Conclusion: Mandibular incisors in the examined Saudi Arabian population were predominantly had a single canal. Nevertheless, a substantial number of patients presented with complex root morphology. Hence, CBCT can be utilized as a potential supplementary tool during root canal treatment.