Medical Radiology and Radiation Safety. 2026. Vol. 71. № 1

DOI:10.33266/1024-6177-2026-71-1-73-81

Aqeel Al-Saedi¹, Bahaa Al-Bakhakh², Riad Al-Taee², Ali Ayad Swadi¹

Anatomical Configuration of Mandibular Incisors: 
a Cone Beam Computed Tomography Study

¹ College of Dentistry, University of Basrah, Basrah, Iraq

² College of Dentistry, Al-Maaqal University, Basrah, Iraq

Contact person: Aqeel Al-Saedi, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. , This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Abstract

Purpose: Through the use of cone-beam computed tomography (CBCT) imaging, the objective of this study was to investigate the root canal anatomy of mandibular incisors in a subset of Iraqis. 

Methods: A total of 519 permanent incisors in the jaw were included in the 150 CBCT pictures that were taken into consideration. An examination of statistics was carried out on the reported root canal number as well as the root canal configuration, which was then classified in accordance with the Vertucci technique. A research project was carried out with the purpose of investigating the relationship between gender and age, as well as the frequency of root canal morphology and the number of root canals.

Result: Type I Vertucci configurations were found in the teeth of the study participants at a rate of 54.9 %, followed by type III configurations at a rate of 43.3 %. Types V and VII configurations were found in the least significant proportions, with 1.2 % and 0.6 respectively. With each and every incisor that was checked, there was a single root that was present. Patients who were above the age of 40 had a lower number of teeth that required two root canals.

Conclusion: The most prevalent kind of mandibular incisors found in the Iraqi subpopulation are those that have a single canal and a structure that is classified as kind I canal. On the other hand, there are instances in which there is more than one root canal, and the patterns of the canals are different.

Keywords: cone-beam computed tomography, mandibular incisors, root canal, apical foramen, Irag’s subpopulation

For citation: Aqeel Al-Saedi, Bahaa Al-Bakhakh, Riad Al-Taee, Ali Ayad Swadi. Anatomical Configuration of Mandibular Incisors: a Cone Beam Computed Tomography Study. Medical Radiology and Radiation Safety. 2026;71(1):73–81. DOI:10.33266/1024-6177-2026-71-1-73-81

 

References

1. Bansal R., Hegde S., Astekar M.S. Classification of Root Canal Configurations: A Review and a New Proposal of Nomenclature System for Root Canal Configuration. J Clin Diagnostic Res. 2018;12;5:ZE01-ZE05. Doi: 10.7860/jcdr/2018/35023.11615.

2. Saati S., Shokri A., Foroozandeh M., Poorolajal J., Mosleh N. Root Morphology and Number of Canals in Mandibular Central and Lateral Incisors using Cone Beam Computed Tomography. Braz Dent J. 2018;29;3:239-244. Doi: 10.1590/0103-6440201801925.

3. Boruah L.C., Bhuyan A.C. Morphologic Characteristics of Root Canal of Mandibular Incisors in North-East Indian Population: an in Vitro Study. J Conserv Dent. 2011 Oct;14;4:346-50. Doi: 10.4103/0972-0707.87195. PMID: 22144800; PMCID: PMC3227278.

4. Robertson D., Leeb I.J., McKee M., Brewer E. A Clearing Technique for the Study of Root Canal Systems. J Endod. 1980;6;1:421-424. Doi: 10.1016/S0099-2399(80)80218-4.

5. Vertucci F., Seelig A., Gillis R. Root Canal Morphology of the Human Maxillary Second Premolar. Oral Surgery, Oral Med Oral Pathol. 1974;38;3:456-464. Doi: 10.1016/0030-4220(74)90374-0.

6. Pawar A.M., Pawar M., Kfir A., et al. Root Canal Morphology and Variations in Mandibular Second Molar Teeth of an Indian Population: an in Vivo Cone-Beam Computed Tomography Analysis. Clin Oral Investig. 2017;21;9:2801-2809. Doi: 10.1007/s00784-017-2082-6.

7. Franklin S. Weine, Harry J. Healey, Harold Gerstein L.E. Canal Configuration in the Mesiobuccal Root of the Maxillary First Molar and its Endodontic Significance. Oral Surg Oral Med Oral Pathol. 1969 Sep;28;3:419-25. Doi: 10.1016/0030-4220(69)90237-0.

8. Gomes B.P.F.A., Rodrigues H.H., Tancredo N. The Use of a Modelling Technique to Investigate the Root Canal Morphology of Mandibular Incisors. Int Endod J. 1996;29;1:29-36. Doi: 10.1111/j.1365-2591.1996.tb01356.x.

9. Alaçam T., Görgül G., Ömürlü H. Evaluation of Diagnostic Radiopaque Contrast Materials Used with Calcium Hydroxide. J Endod. 1990;16;8:365-368. Doi: 10.1016/S0099-2399(06)81907-2.

10. Datta P., Zahir S., Kundu G.K., Dutta K. Different Methods of Studying Root Canal Morphology of Human Tooth: A Review. Bangladesh J Dent Res Educ. 2015;5;2:59-63. Doi: 10.3329/bjdre.v5i2.24718.

11. Tachibana H., Matsumoto K. Applicability of X-ray Computerized Tomography in Endodontics. Endod Dent Traumatol. 1990 Feb;6;1:16-20. Doi: 10.1111/j.1600-9657.1990.tb00381.x. PMID: 2390962.

12. Nathani P., Naik S., Singh M.P., Verghese S. Endodontic Applications of Spiral Computed Tomography Abstract: Introduction: History: Technique: Endodontic Applications. 2009;2;1:1-4.

13. Nimeshkumar P., Ekta M. A Review on Cone Beam Computed Tomography in Dentistry. Int J Oral Craniofacial Sci. November 2021:003-007. Doi: 10.17352/2455-4634.000050.

14. Macleod I., Heath N. Cone-Beam Computed Tomography (CBCT) in Dental Practice. Dent Update. 2008;35;9:594-8. Doi: 10.12968/denu.2008.35.9.590.

15. Khanna A.B. Applications of Cone Beam Computed Tomography in Endodontics. Evidence-Based Endod. 2020;5;1:16-25. Doi: 10.1186/s41121-020-00020-4.

16. Vertucci F.J. Root Canal Anatomy of the Human Permanent Teeth. Oral Surgery, Oral Med, Oral Pathol. 1984 Nov;58;5:589-99. Doi: 10.1016/0030-4220(84)90085-9.

17. Almohaimede A., Alqahtani A., Alhatlani N., Alsaloom N. Analysis of Root Canal Anatomy of Mandibular Permanent Incisors in Saudi Subpopulation: a Cone-Beam Computed Tomography (CBCT) Study. 2022 May 19;2022:3278943. Doi: 10.1155/2022/3278943.

18. Ghabbani H.M., Marghalani A.A., Alabiri H.R. Assessment of Root Canal Morphology of Mandibular Incisors Using Cone-Beam Computed Tomography among Residents of Al-Madinah Al-Munawara Region, Saudi Arabia. Eur J Gen Dent. 2020;9;1:40-44. Doi: 10.4103/ejgd.ejgd_141_19.

19. Al-Saedi A., Al-Bakhakh B., AL-Taee R.G. Using Cone-Beam Computed Tomography to Determine the Prevalence of the Second Mesiobuccal Canal in Maxillary First Molar Teeth in a Sample of an Iraqi Population. Clin Cosmet Investig Dent. 2020;12:505-514. Doi: 10.2147/CCIDE.S281159.

20. Martins J.N.R, Nole C., Ounsi H.F., et al. Worldwide Assessment of the Mandibular First Molar Second Distal Root and Root Canal: a Cross-sectional Study with Meta-Analysis. J Endod. 2022;48;2:223-233. Doi: 10.1016/j.joen.2021.11.009.

21. Al-Fouzan K.S., Al-Fouzan M., AlManee A., Jan J., Al- Rejaie M. Incidence of Two Canals in Extracted Mandibular Incisors Teeth of Saudi Arabian Samples. Saudi Endodontic Journal. 2012;2;2:65–69. 

22. Mashayekhi M. Anatomical Analysis of Permanent Man-Dibular Incisors in a Saudi Arabian Population: an in Vivo Cone-Beam Computed Tomography Study in Vivo Cone-Beam Computed Tomography Study. Nigerian Journal of Clinical Practice. 2019 Nov;22;11:1611-1616. Doi: 10.4103/njcp.njcp_291_19.

23. Martins J.N.R., Ensinas P., Chan F., et al. Worldwide Prevalence of the Lingual Canal in Mandibular Incisors: a Multicenter Cross-Sectional Study with Meta-Analysis. J Endod. 2023;49;7:819-835. Doi: 10.1016/j.joen.2023.05.012.

24. Mustafa M., Karobari M.I., Al-Maqtari A.A.A., et al. Investigating Root and Canal Morphology of Anterior and Premolar Teeth Using CBCT with a Novel Coding Classification System in Saudi Subpopulation. Sci Rep. 2025;15;1:1-20. Doi: 10.1038/s41598-025-86277-4.

25. Goran A.M. (EDJ) FHR-EDJ, Undefined 2020. Canal Configurations of Mandibular Anterior Teeth in Erbil City by CBCT. HmuEduKrd. 2020;3;1:10-12.

26. Mahmood Talabani R. Assessment of Root Canal Morphology of Mandibular Permanent Anterior Teeth in an Iraqi Subpopulation by Cone-Beam Computed Tomography. J Dent Sci. 2021 Oct;16;4:1182-1190. Doi: 10.1016/j.jds.2021.02.010. Epub 2021 Apr 1. PMID: 34484586; PMCID: PMC8403811.

27. Alkahtany M., Almadhi K., Madwas A. Root Canal Morphology of Mandibular Anterior Teeth Using Cone Beam Computerized Tomography in Saudi Sub-Population. International Journal of Dentistry and Oral. 2020;6:1–6. 

28. Kazemipoor M., Hajighasemi A., Hakimian R. Gender Difference and Root Canal Morphology in Mandibular Premolars: A Cone-Beam Computed Tomography Study in an Iranian Population. Contemp Clin Dent. 2015;6;3. Doi: 10.4103/0976-237X.161902.

29. Karobari M.I., Noorani T.Y., Halim M.S., Ahmed H.M.A. Root and Canal Morphology of the Anterior Permanent Dentition in Malaysian Population Using Two Classification Systems: a CBCT Clinical Study. Aust Endod J. 2021;47;2:202-216. Doi: 10.1111/aej.12454.

 

 

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Conflict of interest. The authors declare no conflict of interest.

Financing. The study had no sponsorship.

Contribution. Aqeel Al-Saedi: Management of the project, resources, software, conceptualization, data curation, investigation, methodology, writing (original draft and review/editing), and project management. Bahaa Al-Bakhakh: Ideas generation, data curation, research, methodology, project management, writing (both the first draft and subsequent revisions), and editing and review. Riad Al-Taee: Ideas, information gathering, analysis, methodology, management of projects, and materials;  Both the «original draft» and «review and editing» stages of writing.

Article received: 20.11.2025. Accepted for publication: 25.12.2025.