Indexing
CÁC SỐ TỪ 2011-2023
Tạp chí Y Dược Học
Tóm tắt
Background: Dental treatment of the maxillary first molar is often challenging due to its complex anatomical configuration and the close proximity of its roots to the maxillary sinus.
Objective: This study investigated the root canal morphology and the spatial relationship between the maxillary first molar roots and the maxillary sinus floor using cone-beam computed tomography (CBCT).
Materials and methods: A retrospective cross-sectional study analyzing 459 maxillary first molars from 255 CBCT images across axial, coronal, and sagittal planes was conducted. Parameters assessed included the number of roots and canals, canal configurations according to the Vertucci classification, the spatial relationship between canal orifices, and the distance from the root apices to the maxillary sinus floor.
Results: 100% of maxillary first molars possessed three roots and 56.9% exhibited second mesiobuccal canal. The MB root canal showed significant morphological diversity, with Vertucci Type I (43.1%) being the most prevalent configuration. Regarding spatial orientation, 78.2% of the second mesiobuccal orifices were located mesially relative to the line connecting the first mesiobuccal and palatal orifices. The mean distance between the two mesiobuccal canal orifices was 2.00 ± 0.34 mm, with a statistically significant difference observed between genders. A substantial proportion of roots exhibited Type III (contact) and Type IV (protrusion) sinus-root relationships, particularly in the younger age groups (≤ 20 and 21-30 years). Increased age was significantly associated with a greater distance to the sinus floor and the sinus-root distance was smaller in females compared to males across all roots.
Conclusion: Maxillary first molars demonstrate a high prevalence of a second mesiobuccal canal and an intimate anatomical relationship with the maxillary sinus floor. These findings underscore the necessity of CBCT as an essential diagnostic tool in complex endodontic and oral surgical procedures in the posterior maxilla, crucial for accurate canal localization, precise treatment planning, and minimizing the risk of sinus-related complications.
| Đã xuất bản | 25-08-2026 | |
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| Số tạp chí | Tập 16 Số 04 (2026) | |
| Phân mục | Nghiên cứu | |
| DOI | 10.34071/jmp.2026.4.1061 | |
| Từ khóa | Maxillary first molar, root canal anatomy, maxillary sinus, Cone-beam Computed Tomography. |
công trình này được cấp phép theo Creative Commons Attribution-phi thương mại-NoDerivatives 4.0 License International .
Bản quyền (c) 2026 Tạp chí Y Dược Huế
Almufleh LS. The outcomes of nonsurgical root canal treatment and retreatment assessed by CBCT: A systematic review and meta-analysis. Saudi Dent J. 2025;37:14.
Vertucci FJ. Root canal anatomy of the human permanent teeth. Oral Surg Oral Med Oral Pathol. 1984;58:589-99.
Wolcott J, Ishley D, Kennedy W, Johnson S, Minnich S. Clinical investigation of second mesiobuccal canals in endodontically treated and retreated maxillary molars. J Endod. 2002;28(6):477-9.
Shen Y, Gu Y. Assessment of the presence of a second mesiobuccal canal in maxillary first molars according to the location of the main mesiobuccal canal: a micro-computed tomographic study. Clin Oral Investig. 2021;25(6):1-13.
Alnowailaty Y, Alghamdi F. The prevalence and location of the second mesiobuccal canals in maxillary first and second molars assessed by cone-beam computed tomography. Cureus. 2022;14(5):e24900.
Zhuk R, Taylor S, Johnson JD, Paranjpe A. Locating the MB2 canal in relation to MB1 in Maxillary First Molars using CBCT imaging. Aust Endod J. 2020;46(2):184-90.
Sharan A, Madjar D. Correlation between maxillary sinus floor topography and related root position of posterior teeth using panoramic and cross-sectional computed tomography. J Periodontol. 2006;7(7):1215-21.
Iliescu VI, Nimigean V, Nimigean VR, Georgescu L, Preoteasa CT. Maxillary sinus implications in endodontics and implant dentistry—A literature review. Rom J Oral Rehabil. 2024;16:147–61.
Iliescu VI, Nimigean VR, Preoteasa CT, Georgescu L, Nimigean V. Evaluation of the proximity of the maxillary teeth root apices to the maxillary sinus floor in romanian subjects: A Cone-Beam computed tomography study. Diagnostics (Basel). 2025;15(14):1741.
Pires M, Martins JN, Pereira MR, Vasconcelos I, Costa RP, Duarte I, Ginjeira Z. Diagnostic value of cone beam computed tomography for root canal morphology assessment - a micro-CT based comparison. Clin Oral Investig. 2024;28(3):201.
Yang S, Li C, Shi H, Liu M, Wang X. Cone-beam computed tomography evaluation of root and canal morphology of maxillary molars in a Chinese kazakh population. BMC Oral Health. 2025;25(1):1538.
Sharma M, Gupta S, Bhayya DP, Upadhyay K, Pandya D, Srivastava A, Gupta S. CBCT Analysis of Maxillary First Molar in Indian Population. Int J Clin Pediatr Dent. 2022;15(3):258-62.
Shetty A, Bhat R, Babu B, Hegde NM, Shetty C, Shetty P, et al. Occurrence and morphology of MB2 canals in maxillary first molars in an Indian subpopulation: a cone beam computed tomography study. J Health Allied Sci NU. 2022;12:101–5.
Pawar A, Thakur B, Machado R, Kwak SW, Kim HC. An In-vivo cone-beam computed tomography analysis of root and canal morphology of maxillary first permanent molars in an Indian population. Indian J Dent Res. 2021;32(1):104-9.
Martins JN, Marques D, Silva E, Carames J, Mata A, Versiani MA. Second mesiobuccal root canal in maxillary molars - A systematic review and meta-analysis of prevalence studies using cone beam computed tomography. Arch Oral Biol. 2020;113:104589.
Nguyen DH, Nguyen AN. Assessment of the failure rate of endodontic treatment of patients who come for examination and treatment at the general dental treatment department of the national hospital of ondoto stomatology at Ho Chi Minh city. Vietnam Med J. 2024;540:44-51.
Tran TLA, Ta AT. Evaluating the effectiveness of CBCT in surveying the root canal morphology of the maxillary first and second molars. J 108 Clin Med Pharm. 2020;15(5):1-4.
Truong TMA, Phạm TTH, Đỗ TTH, Phạm NH, Nguyễn TNT. Morphological characteristics of the root canal system of the maxillary first molar on Conebeam CT. Vietnam Med J. 2021;503(2):238-42.
Shahbazian M, Xue D, Hu Y, Cleynenbreugel J, Jacobs R. Spiral computed tomography based maxillary sinus imaging in relation to tooth loss, implant placement and potential grafting procedure. J Oral Maxillofac Res. 2010;1:e7.
Karabucak B, Bunes A, Chehoud C, et al. Prevalence of apical periodontitis in endodontically treated premolars and molars with untreated canal: A cone-beam computed tomography study. J Endod. 2016;42(4):538-41.
Special Committee to Revise the Joint AAE/AAOMR Position Statement on use of CBCT in Endodontics. AAE and AAOMR Joint Position Statement: Use of Cone Beam Computed Tomography in Endodontics 2015 Update. Oral Surg Oral Med Oral Pathol Oral Radiol. 2015;120(4):508 12.
European Society of Endodontology. European Society of Endodontology position statement on the use of CBCT in endodontics. Int Endod J. 2019;52(12):1675-8.
Rahman NA, Halim MS, Khamis MF, Ghani HA. Analysis of root and canal morphology of maxillary first and second molars among Malay ethnic in the Malaysian population with the aid of cone beam computed tomography: A retrospective study. Eur J Gen Dent. 2020;9(2):84-9.
Alavi AM, Opasanon A. Root and canal morphology of Thai maxillary molars. Int Endod J. 2002;35(5):478-85.
Watanabe S, Yabumoto S, Ikeda S, Okiji T. Evaluation of root and root canal morphology in maxillary first molar teeth: A cone-beam computed tomography study using two classification systems in a Japanese population. J Dent Sci. 2025;20(3):1554-61.
Guo J, Vahidnia A, Sedghizadeh P, Enciso R. Evaluation of root and canal morphology of maxillary permanent first molars in a North American population by cone-beam computed tomography. J Endod. 2014;40(5):635-9.
Vu TQH, Chu TM, Pham TL, Vu VD, Nguyen TC. Root morphology and root canal system of the maxillary first molar in a Vietnamese group using CBCT. Vietnam Med J. 2024;541(1):261.
Nguyen MD, Huynh HTH. Anatomical morphology of the mesiobuccal root canal system of the maxillary first molars. Ho Chi Minh Med J. 2016;20(2):76-81.
Faraj BM. The frequency of the second mesiobuccal canal in maxillary first molars among a sample of the Kurdistan Region-Iraq population - A retrospective cone-beam computed tomography evaluation. J Dent Sci. 2021;16(1):91-5.
Normando PHC, Santos JCMD, Akisue E, Paiva HC, Candeiro GTM. Location of the second mesiobuccal canal of maxillary molars in a brazilian subpopulation: analyzing using Cone-beam Computed Tomography. J Contemp Dent Pract. 2022;23(10):979-83.
Zhang Y, Xu H, Wang D, Gu Y, Wang J, Tu S, et al. Assessment of the second mesiobuccal root canal in maxillary first molars: a cone-beam computed tomographic study. J Endod. 2017;43(11):1-7.
Themkumkwun S, Kitisubkanchana J, Waikakul A, Boonsiriseth K. Maxillary molar root protrusion into the maxillary sinus: a comparison of cone beam computed tomography and panoramic findings. Int J Oral Maxillofac Surg. 2019;48(12):1570-6.
Kilic C, Kamburoglu K, Yuksel SP, Ozen T. An assessment of the relationship between the maxillary posterior teeth root tips using dental cone-beam computerized tomography. Eur J Dent. 2010;4:462-7.
Mir HA, Shafiq S, Khan M, Mukhtar S, Asif A, Akhter Q. Relationship of maxillary sinus and maxillary first molar root using Cone Beam Computed Tomography. J Islamabad Med Dental Coll. 2023;12(1):147-52.
Sarilita E, Muhammad RM, Nugraha HG, Murniati N, Yusuf HY, Takeshita Y, Asaumi J. Anatomical relationship between maxillary posterior teeth and the maxillary sinus in an Indonesian population: A CT scan study. BMC Oral Health. 2024;24:1014.
Chan PS, Sung CE, Tsai YWC, Yuh DY, Chen YW, Wung HH, et al. The Relationship between the Roots of Posterior Maxillary Teeth and Adjacent Maxillary Sinus Floor was Associated with Maxillary Sinus Dimension. Diagnostics (Basel). 2021;11(8):1435.
Pei J, Liu J, Chen Y, Liu Y, Liao X, Pan J. Relationship between maxillary posterior molar roots and the maxillary sinus floor: Cone-beam computed tomography analysis of a western Chinese population. J Int Med Res. 2020;48(6):300060520926896.
Oishi S, Ishida Y, Matsumura T, Kita S, Sakaguchi-Kuma T, Imamura T, et al. A cone-beam computed tomographic assessment of the proximity of the maxillary canine and posterior teeth to the maxillary sinus floor: Lessons from 4778 roots. Am J Orthod Dentofacial Orthop. 2020;157(6):792-802.