The variation in the number of roots and canals morphology of permanent mandibular first molar teeth by using cone beam computed tomography imaging in a sample of Erbil city

Authors

  • Hassan Ali Mahmoyd Albarzanji oral and Maxillofacial Department, College of Dentistry, Hawler Medical University
  • Alaa Muhamed Sadiq Muhamed Jamil Oral and Maxillofacial Department, College of Dentistry, Hawler Medical University

DOI:

https://doi.org/10.15218/edj.2020.05

Keywords:

Mandibular first molar teeth, cone beam computed tomography, root, and canal morphology.

Abstract

Background and Objectives: Adequate knowledge about the number of roots, canals, and morphology of lower first molar teeth is a basic requirement of root canal therapy and any surgical treatment in this region, was carried out to investigate root and canal morphology of permanent mandibular first molars in a sample from Erbil population using cone beam computed tomography (CBCT).

Methods: This study  carried out during a period from October 2017 till June 2018. The sample selected from patients visited (college of Dentistry, Denta Plus, Hollywood Smile Design) centers in Erbil city according to specific criteria. One hundred patients have been selected from those patients who referred to obtain CBCT for the lower mandibular region, after obtaining consent from these patients and about 141 mandibular first molar teeth were used in this study. Different measurements were done on the CBCT of each patient by investigating the root numbers, the number of canals and root canal configuration which classified by using Wein’s and Vertucci’s classification. The data were analyzed statistically by Pearson’s Chi-square.

Results: The result indicated that the first molar tooth had two roots one mesial and one distal, while about the numbers of extra roots the result indicated that only the distal root showed five extra roots (3.5%). The data analysis for the number of canals in study sample indicated that the mesial root had two canals in all sample while in distal root showed that 41 mandibular first molars showed two canals which were about 29.1% and 100 mandibular first molars showed one canal which was about 70.9%.

The result indicated that morphology of distal root canal of mandibular first molars according to Wein’s classification, it that 70.9% of the study sample was of type I morphology, both type II and type IV were about 5% of the sample, type III morphology  about 12.8%, and about 6.4% of study sample classified according to Vertucci classification which showed type III morphology while for the morphology of mesial root canal of lower first molar tooth the result indicated that 100% of the samples had type III Wein’s morphology.

Conclusion: The prevalence of extra root was about 3.5% in distal root. Wein’s type I the most prevalent configurations in distal root and type III Wein’s in the mesial root of the first mandibular molars. CBCT analysis of root canal system provides information and details which is very helpful in different treatment modalities.

 

References

1. Scarfe WC, Levin MD, Gane D, Farman AG. Use of cone beam computed tomography in endodontics. Int J Dent 2010; 2009.

2. Tachibana H, Matsumoto K. Applicability of x‐ray computerized tomography in endodontics. Dent Traumatol 1990; 6(1):16-20.

3. Kartal N, Özçelik B, Cimilli H. Root canal morphology of maxillary premolars. J Endod 1998; 24(6):417-9.

4. Meena N, Kowsky RD. Applications of cone beam computed tomography in endodontics: A review. Dentistry. 2014; 04(07):242.

5. Walton RT, M. . Principle and practice of endodontics. Philadelphia: W.B Sounders; 2000.

6. Chen G, Yao H, Tong C. Investigation of the root canal configuration of mandibular first molars in a Taiwan Chinese population. Int Endod Jo 2009; 42(11):10449.

7. De Pablo ÓV, Estevez R, Sánchez MP, Heilborn C, Cohenca N. Root anatomy and canal configuration of the permanent mandibular first molar: a systematic review. J Endod 2010; 36(12):1919-31.

8. Vertucci FJ. Root canal morphology and its relationship to endodontic procedures. Endod Topics 2005; 10(1):3-29.

9. Touré B, Faye B, Kane AW, Lo CM, Niang B, Boucher Y. Analysis of reasons for extraction of endodontically treated teeth: a prospective study. J Endod 2011; 37(11):1512-5.

10. Weine FS. Endodontic therapy: CV Mosby; 2003.

11. Tu M-G, Huang H-L, Hsue S-S, Hsu J-T, Chen S-Y, Jou M-J, et al. Detection of permanent threerooted mandibular first molars by cone-beam computed tomography imaging in Taiwanese individuals. J Endod 2009; 35(4):503-7.

12. Tu M-G, Tsai C-C, Jou M-J, Chen W-L, Chang Y-F, Chen S-Y, et al. Prevalence of three-rooted mandibular first molars among Taiwanese individuals. J Endod 2007; 33(10):1163-6.

13. Schäfer E, Breuer D, Janzen S. The prevalence of three-rooted mandibular permanent first molars in a German population. J Endod 2009; 35(2):202-5.

14. Ballullaya SV, Vemuri S, Kumar PR. Variable permanent mandibular first molar: Review of literature. JCD 2013; 16(2):99.

15. Gulabivala K, Opasanon A, Ng YL, Alavi A. Root and canal morphology of Thai mandibular molars. Int Endod J 2002; 35(1):56-62.

16. Song JS, Choi H-J, Jung I-Y, Jung H-S, Kim S-O. The prevalence and morphologic classification of distolingual roots in the mandibular molars in a Korean population. J Endod 2010; 36(4):653-7.

17. Song JS, Kim S-O, Choi B-J, Choi H-J, Son H-K, Lee J-H. Incidence and relationship of an additional root in the mandibular first permanent molar and primary molars. Oral Surg Oral Med Oral Pathol Oral Radiol Endodontol 2009; 107(1):e56-e60.

18. Sert S, Bayirli GS. Evaluation of the root canal configurations of the mandibular and maxillary permanent teeth by gender in the Turkish population. J Endod 2004; 30(6):391-8.

19. Gu YC LQ, Wang HG, et al. . Root canal morphology of permanent three-rooted mandibular first molars - part I: pulp floor and root canal system. J Endod 2010; 36::990–4.

20. Al‐Qudah A, Awawdeh L. Root and canal morphology of mandibular first and second molar teeth in a Jordanian population. Int Endod J 2009; 42(9):775-84.

21. Gu YC LQ, Wang HG, et al. Root canal morphology of permanent three-rooted mandibular first molars - part I: pulp floor and root canal system. J Endod 2010; 36::990–4.

22. Gu Y, Lu Q, Wang P, Ni L. Root canal morphology of permanent three-rooted mandibular first molars: part II - measurement of root canal curvatures. J Endod 2010; 36(8):1341-6.

23. Çalişkan MK, Pehlivan Y, Sepetçioğlu F, Türkün M, Tuncer SŞ. Root canal morphology of human permanent teeth in a Turkish population. J Endod 1995; 21(4):200-4.

24. Sert S, Aslanalp V, Tanalp J. Investigation of the root canal configurations of mandibular permanent teeth in the Turkish population. Int Endod J 2004; 37(7):494-9.

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Published

2020-06-06

How to Cite

1.
Albarzanji HAM, Muhamed Jamil AMS. The variation in the number of roots and canals morphology of permanent mandibular first molar teeth by using cone beam computed tomography imaging in a sample of Erbil city. EDJ [Internet]. 2020 Jun. 6 [cited 2022 Jun. 26];3(1):33-9. Available from: https://pha.hmu.edu.krd/index.php/journal/article/view/77

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Original Articles