Albannay, Bader2022-07-212022-07-212021430.1-2021.03https://repository.mbru.ac.ae/handle/1/1019Background: Failure in mandibular permanent anterior teeth is almost due to missed second canal. Advanced techniques such as using a dental operating microscope and cone-beam computed tomography (CBCT), one important tool is knowing the prevalence of the second canal in mandibular permanent anterior teeth in different populations. There were no studies have been conducted to examine the root canal morphology in mandibular permanent anterior teeth in the Emirati population. Aim: To examine the root and canal morphology of mandibular anterior teeth an determine the prevalence of the second canal in the Emirati population using CBCT. Materials & Methods: A total of 176 CBCT scans were randomly selected and obtained from Health Point Dental Center, Abu Dhabi. These scans were reviewed, and the canal configurations iii were categorized according to Vertucci’s classification. Results: A total of 176 scans were evaluated. All of the examined mandibular central and lateral incisors had one root. Only 1.5% of the examined mandibular canines had two roots. Almost 43.5% and 37.5% of the examined central and lateral incisors had a second canal, respectively. Whereas only 6.5% of the examined canines had two canals. Generally, Type I Vertucci canal configuration was the most common in all examined teeth (70.5%), followed by Type III (28%), type V (1%) while Type II was the least common configuration (0.5%). Regarding age groups, there was a statistically significant difference in the frequencies of left central incisor canal types between the groups (p40 years for the mandibular anterior. Regarding gender, it was highly symmetrical between male and female. In the analysis of bilateral symmetry of the types of Vertucci classification in the mandible anterior teeth, type I Vertucci classification had the highest incidence of bilateral symmetry canines (90%), lateral incisors (66%), and central incisors (48%), followed by Type III canines (10%) lateral incisors (30%) and central incisors (34%), while Type V had the least incidence of symmetry. Conclusions: This study shows a high prevalence of the second canal in mandibular anterior teeth in the Emirati population. More attention should be given to detect the additional canals and the use of CBCT might be recommended as an effective diagnostic tool to identify this canalConclusions: This study shows a high prevalence of the second canal in mandibular anterior teeth in the Emirati population. More attention should be given to detect the additional canals and the use of CBCT might be recommended as an effective diagnostic tool to identify this canal.enEndodonticsThesis