Volume 10, Issue 1 (3-2025)
J Res Dent Maxillofac Sci 2025, 10(1): 34-39 |
Back to browse issues page
Ethics code: R.IAU.KHUISF.REC.1402.262
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Mosadeghian S, Torkzadeh A, Ranjbarian P, Asaadi R. Position of Second Mesiobuccal Canal Relative to Distobuccal and Palatal Canals of Maxillary Molars in an Iranian Population. J Res Dent Maxillofac Sci 2025; 10 (1) :34-39
URL: http://jrdms.dentaliau.ac.ir/article-1-703-en.html
URL: http://jrdms.dentaliau.ac.ir/article-1-703-en.html
1- Department of Oral and Maxillofacial Radiology, Dental School, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2- Department of Oral and Maxillofacial Radiology, Dental School, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran ,Azadehh.Torkzadeh@Gmail.com
3- Department of Endodontics, Dental School, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2- Department of Oral and Maxillofacial Radiology, Dental School, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran ,
3- Department of Endodontics, Dental School, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
Abstract: (121 Views)
Background and Aim: This study assessed the position of the second mesiobuccal (MB2) canal relative to the distobuccal (DB) and palatal (P) canals of maxillary molars in an Iranian population using cone-beam computed tomography (CBCT).
Materials and Methods: This cross-sectional study evaluated 110 CBCT scans of patients retrieved from a radiology clinic in Isfahan, Iran. The MB1-MB2 inter-orifice distance, and the angle formed between the MB1-MB2 line and the DB-P line were measured on reconstructed axial sections. The angulation of MB2 orifice relative to the DB and P canals was categorized as positive, negative, and parallel. Data were compared by Student t-test, Fisher’s exact test, and Chi-square test (alpha=0.05).
Results: The mean MB1-MB2 inter-orifice distance was not significantly different in first and second molars, in the right and left sides, or in males and females (P>0.05). Negative angulation of MB2 orifice relative to the DB and P canals had the highest frequency (72.7%) followed by positive angulation (23.6%). Angulation of MB2 orifice had no significant correlation with tooth type (first/second molar), laterality, or gender (P>0.05).
Conclusion: The mean MB1-MB2 inter-orifice distance had no significant correlation with tooth type, laterality, or gender. Negative angulation of the MB2 relative to the DB and P canals had the highest frequency, indicating that if a hypothetical line is drawn from the MB1 orifice parallel to the DB-P line, the MB2 orifice would be probably at the distal of this line. Angulation of MB2 orifice had no significant correlation with tooth type, laterality, or gender.
Materials and Methods: This cross-sectional study evaluated 110 CBCT scans of patients retrieved from a radiology clinic in Isfahan, Iran. The MB1-MB2 inter-orifice distance, and the angle formed between the MB1-MB2 line and the DB-P line were measured on reconstructed axial sections. The angulation of MB2 orifice relative to the DB and P canals was categorized as positive, negative, and parallel. Data were compared by Student t-test, Fisher’s exact test, and Chi-square test (alpha=0.05).
Results: The mean MB1-MB2 inter-orifice distance was not significantly different in first and second molars, in the right and left sides, or in males and females (P>0.05). Negative angulation of MB2 orifice relative to the DB and P canals had the highest frequency (72.7%) followed by positive angulation (23.6%). Angulation of MB2 orifice had no significant correlation with tooth type (first/second molar), laterality, or gender (P>0.05).
Conclusion: The mean MB1-MB2 inter-orifice distance had no significant correlation with tooth type, laterality, or gender. Negative angulation of the MB2 relative to the DB and P canals had the highest frequency, indicating that if a hypothetical line is drawn from the MB1 orifice parallel to the DB-P line, the MB2 orifice would be probably at the distal of this line. Angulation of MB2 orifice had no significant correlation with tooth type, laterality, or gender.
Type of Study: Original article |
Subject:
Endodontics
References
1. Gomez F, Brea G, Gomez-Sosa JF. Root canal morphology and variations in mandibular second molars: an in vivo cone-beam computed tomography analysis. BMC Oral Health. 2021 Sep 1;21(1):424. [DOI:10.1186/s12903-021-01787-7] [PMID] []
2. Wolcott J, Ishley D, Kennedy W, Johnson S, Minnich S, Meyers J. A 5 yr clinical investigation of second mesiobuccal canals in endodontically treated and retreated maxillary molars. J Endod. 2005 Apr;31(4):262-4. [DOI:10.1097/01.don.0000140581.38492.8b] [PMID]
3. Martins JNR, Gu Y, Marques D, Francisco H, Caramês J. Differences on the Root and Root Canal Morphologies between Asian and White Ethnic Groups Analyzed by Cone-beam Computed Tomography. J Endod. 2018 Jul;44(7):1096-104. [DOI:10.1016/j.joen.2018.04.001] [PMID]
4. Hartwell G, Appelstein CM, Lyons WW, Guzek ME. The incidence of four canals in maxillary first molars: a clinical determination. J Am Dent Assoc. 2007 Oct;138(10):1344-6. [DOI:10.14219/jada.archive.2007.0050] [PMID]
5. Smadi L, Khraisat A. Detection of a second mesiobuccal canal in the mesiobuccal roots of maxillary first molar teeth. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Mar;103(3):e77-81. [DOI:10.1016/j.tripleo.2006.10.007] [PMID]
6. Betancourt P, Navarro P, Muñoz G, Fuentes R. Prevalence and location of the secondary mesiobuccal canal in 1,100 maxillary molars using cone beam computed tomography. BMC Med Imaging. 2016 Dec 1;16(1):66. [DOI:10.1186/s12880-016-0168-2] [PMID] []
7. Pattanshetti N, Gaidhane M, Al Kandari AM. Root and canal morphology of the mesiobuccal and distal roots of permanent first molars in a Kuwait population--a clinical study. Int Endod J. 2008 Sep;41(9):755-62. [DOI:10.1111/j.1365-2591.2008.01427.x] [PMID]
8. Naseri M, Kharazifard MJ, Hosseinpour S. Canal Configuration of Mesiobuccal Roots in Permanent Maxillary First Molars in Iranian Population: A Systematic Review. J Dent (Tehran). 2016 Nov;13(6):438-47.
9. Park JW, Lee JK, Ha BH, Choi JH, Perinpanayagam H. Three-dimensional analysis of maxillary first molar mesiobuccal root canal configuration and curvature using micro-computed tomography. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Sep;108(3):437-42. [DOI:10.1016/j.tripleo.2009.01.022] [PMID]
10. Gilles J, Reader A. An SEM investigation of the mesiolingual canal in human maxillary first and second molars. Oral Surg Oral Med Oral Pathol. 1990 Nov;70(5):638-43. [DOI:10.1016/0030-4220(90)90415-O] [PMID]
11. Buhrley LJ, Barrows MJ, BeGole EA, Wenckus CS. Effect of magnification on locating the MB2 canal in maxillary molars. J Endod. 2002 Apr;28(4):324-7. [DOI:10.1097/00004770-200204000-00016] [PMID]
12. Alizade E, Ranjbarian P, Torkzade A, Shariati Najafabadi S S. Prevalence of Technical Errors in a Sample of Endodontically Treated Teeth: a CBCT Analysis. J Res Dent Sci. 2023 Jul 10;20(2):43-50. [DOI:10.61186/jrds.20.2.43]
13. 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]
14. Perrini N, Versiani MA. Historical overview of the studies on root canal anatomy. The root canal anatomy in permanent dentition. 2019:3-15. [DOI:10.1007/978-3-319-73444-6_1]
15. Nattress BR, Martin DM. Predictability of radiographic diagnosis of variations in root canal anatomy in mandibular incisor and premolar teeth. Int Endod J. 1991 Mar;24(2):58-62. [DOI:10.1111/j.1365-2591.1991.tb00808.x] [PMID]
16. Ok E, Altunsoy M, Nur BG, Aglarci OS, Çolak M, Güngör E. A cone-beam computed tomography study of root canal morphology of maxillary and mandibular premolars in a Turkish population. Acta Odontol Scand. 2014 Nov;72(8):701-6. [DOI:10.3109/00016357.2014.898091] [PMID]
17. Lee SJ, Lee EH, Park SH, Cho KM, Kim JW. A cone-beam computed tomography study of the prevalence and location of the second mesiobuccal root canal in maxillary molars. Restor Dent Endod. 2020 Sep 3;45(4):e46. [DOI:10.5395/rde.2020.45.e46] [PMID] []
18. Akbarzadeh N, Aminoshariae A, Khalighinejad N, Palomo JM, Syed A, Kulild JC, Sadeghi G, Mickel A. The Association between the Anatomic Landmarks of the Pulp Chamber Floor and the Prevalence of Middle Mesial Canals in Mandibular First Molars: An In Vivo Analysis. J Endod. 2017 Nov;43(11):1797-801. [DOI:10.1016/j.joen.2017.07.003] [PMID]
19. Cotton TP, Geisler TM, Holden DT, Schwartz SA, Schindler WG. Endodontic applications of cone-beam volumetric tomography. J Endod. 2007 Sep;33(9):1121-32. [DOI:10.1016/j.joen.2007.06.011] [PMID]
20. Tuncer AK, Haznedaroglu F, Sert S. The location and accessibility of the second mesiobuccal canal in maxillary first molar. Eur J Dent. 2010 Jan;4(1):12-6.
21. Huumonen S, Kvist T, Gröndahl K, Molander A. Diagnostic value of computed tomography in re-treatment of root fillings in maxillary molars. Int Endod J. 2006 Oct;39(10):827-33. [DOI:10.1111/j.1365-2591.2006.01157.x] [PMID]
22. Esmaeilian A, Torkzadeh A, Mortaheb A, Zakariaee Juybari A. The Examination of Root Morphology of the Maxillary First and Second Molars Using Cone Beam Computed Tomography. J Isfahan Dent Sch 2021; 17(3): 329-36. [DOI:10.18502/ijds.v17i3.7537]
23. Tonelli SQ, Sousa-Neto MD, Leoni GB, Brito-Júnior M, Pereira RD, Oliveira PAX, Nunes E, Silveira FF. Micro-CT evaluation of maxillary first molars: interorifice distances and internal anatomy of the mesiobuccal root. Braz Oral Res. 2021 Apr 26;35:e060. [DOI:10.1590/1807-3107bor-2021.vol35.0060] [PMID]
24. Vhorkate K, Banga K, Pawar AM, Mir S, Arora S, Wahjuningrum DA, Bhardwaj A, Luke AM. Location angle of second mesio-buccal canal in maxillary molars of an Indian population: an in vivo retrospective CBCT evaluation and proposal of a new classification. PeerJ. 2022 Oct 10;10:e14234. [DOI:10.7717/peerj.14234] [PMID] []
25. Zhang Y, Xu H, Wang D, Gu Y, Wang J, Tu S, Qiu X, Zhang F, Luo Y, Xu S, Bai J, Simone G, Zhang G. Assessment of the Second Mesiobuccal Root Canal in Maxillary First Molars: A Cone-beam Computed Tomographic Study. J Endod. 2017 Dec;43(12):1990-6. [DOI:10.1016/j.joen.2017.06.021] [PMID]
Send email to the article author
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
