Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
권호 표지
DOI QR코드

DOI QR Code

Morphological characteristics of the mesiobuccal root in the presence of a second mesiobuccal canal: a micro-CT study

  • Lucas P. Lopes Rosado (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP)) ;
  • Matheus Lima Oliveira (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP)) ;
  • Karla Rovaris (Department of Pathology and Dentistry Clinic, School of Dentistry, Federal University of Piaui (UFPI)) ;
  • Deborah Queiroz Freitas (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP)) ;
  • Frederico Sampaio Neves (Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas (UNICAMP))
  • Received : 2021.02.02
  • Accepted : 2021.04.01
  • Published : 2022.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

Objectives: This study investigated the internal morphology of mesiobuccal (MB) roots of maxillary molars with a second mesiobuccal (MB2) canal. Materials and Methods: Forty-seven maxillary first or second molars from Brazilians were scanned using micro-computed tomography. The following measurements were obtained from the MB roots: root thickness, root width, and dentin thickness of the buccal aspect of the first mesiobuccal (MB1) canal, between the MB1 and MB2 canals, and the palatal aspect of the MB2 and MB1 canals at 3 mm from the root apex and in the furcation region. For statistical analysis, the Student's t-test and analysis of variance with the post-hoc Tukey test were used (α = 0.05). Results: In maxillary molars with an MB2 canal, MB roots were significantly thicker (p = 0.0014) and narrower (p = 0.0016) than in maxillary molars without an MB2 canal. The dentin thickness of the palatal aspect of the MB1 canal was also significantly greater than that of MB roots without an MB2 canal at 3 mm from the root apex (p = 0.0007) and in the furcation region (p < 0.0001). In the furcation region of maxillary molars with an MB2 canal, the dentin thickness between the MB1 and MB2 canals was significantly smaller than that in the buccal and palatal aspects (p < 0.0001). Conclusions: The internal morphology of MB roots of maxillary molars with an MB2 canal revealed differences in dentin thickness, root diameter, and distance between the canals when compared with maxillary molars without an MB2 canal.

Keywords

References

  1. Karabucak B, Bunes A, Chehoud C, Kohli MR, Setzer F. Prevalence of apical periodontitis in endodontically treated premolars and molars with untreated canal: a cone-beam computed tomography study. J Endod 2016;42:538-541. https://doi.org/10.1016/j.joen.2015.12.026
  2. Nascimento EHL, Gaeta-Araujo H, Andrade MFS, Freitas DQ. Prevalence of technical errors and periapical lesions in a sample of endodontically treated teeth: a CBCT analysis. Clin Oral Investig 2018;22:2495-2503. https://doi.org/10.1007/s00784-018-2344-y
  3. do Carmo WD, Verner FS, Aguiar LM, Visconti MA, Ferreira MD, Lacerda MF, Junqueira RB. Missed canals in endodontically treated maxillary molars of a Brazilian subpopulation: prevalence and association with periapical lesion using cone-beam computed tomography. Clin Oral Investig 2021;25:2317-2323. https://doi.org/10.1007/s00784-020-03554-4
  4. Tomaszewska IM, Jarzebska A, Skinningsrud B, Pekala PA, Wronski S, Iwanaga J. An original micro-CT study and meta-analysis of the internal and external anatomy of maxillary molars-implications for endodontic treatment. Clin Anat 2018;31:838-853. https://doi.org/10.1002/ca.23201
  5. Martins JNR, Alkhawas MAM, Altaki Z, Bellardini G, Berti L, Boveda C, Chaniotis A, Flynn D, Gonzalez JA, Kottoor J, Marques MS, Monroe A, Ounsi HF, Parashos P, Plotino G, Ragnarsson MF, Aguilar RR, Santiago F, Seedat HC, Vargas W, von Zuben M, Zhang Y, Gu Y, Ginjeira A. Worldwide analyses of maxillary first molar second mesiobuccal prevalence: a multicenter cone-beam computed tomographic study. J Endod 2018;44:1641-1649.e1. https://doi.org/10.1016/j.joen.2018.07.027
  6. Das S, Warhadpande MM, Redij SA, Jibhkate NG, Sabir H. Frequency of second mesiobuccal canal in permanent maxillary first molars using the operating microscope and selective dentin removal: a clinical study. Contemp Clin Dent 2015;6:74-78. https://doi.org/10.4103/0976-237X.149296
  7. Estrela C, Holland R, Estrela CR, Alencar AH, Sousa-Neto MD, Pecora JD. Characterization of successful root canal treatment. Braz Dent J 2014;25:3-11. https://doi.org/10.1590/0103-6440201302356
  8. Sipaviciute E, Maneliene R. Pain and flare-up after endodontic treatment procedures. Stomatologija 2014;16:25-30.
  9. Somma F, Leoni D, Plotino G, Grande NM, Plasschaert A. Root canal morphology of the mesiobuccal root of maxillary first molars: a micro-computed tomographic analysis. Int Endod J 2009;42:165-174. https://doi.org/10.1111/j.1365-2591.2008.01472.x
  10. Verma P, Love RM. A Micro CT study of the mesiobuccal root canal morphology of the maxillary first molar tooth. Int Endod J 2011;44:210-217. https://doi.org/10.1111/j.1365-2591.2010.01800.x
  11. Degerness RA, Bowles WR. Dimension, anatomy and morphology of the mesiobuccal root canal system in maxillary molars. J Endod 2010;36:985-989. https://doi.org/10.1016/j.joen.2010.02.017
  12. Kim Y, Chang SW, Lee JK, Chen IP, Kaufman B, Jiang J, Cha BY, Zhu Q, Safavi KE, Kum KY. A micro-computed tomography study of canal configuration of multiple-canalled mesiobuccal root of maxillary first molar. Clin Oral Investig 2013;17:1541-1546. https://doi.org/10.1007/s00784-012-0852-8
  13. Wolf TG, Paque F, Woop AC, Willershausen B, Briseno-Marroquin B. Root canal morphology and configuration of 123 maxillary second molars by means of micro-CT. Int J Oral Sci 2017;9:33-37. https://doi.org/10.1038/ijos.2016.53
  14. Ordinola-Zapata R, Martins JNR, Versiani MA, Bramante CM. Micro-CT analysis of danger zone thickness in the mesiobuccal roots of maxillary first molars. Int Endod J 2019;52:524-529. https://doi.org/10.1111/iej.13025
  15. Harris SP, Bowles WR, Fok A, McClanahan SB. An anatomic investigation of the mandibular first molar using micro-computed tomography. J Endod 2013;39:1374-1378. https://doi.org/10.1016/j.joen.2013.06.034
  16. Hiebert BM, Abramovitch K, Rice D, Torabinejad M. Prevalence of second mesiobuccal canals in maxillary first molars detected using cone-beam computed tomography, direct occlusal access, and coronal plane grinding. J Endod 2017;43:1711-1715. https://doi.org/10.1016/j.joen.2017.05.011
  17. van der Vyver PJ, Paleker F, Vorster M, de Wet FA. Root canal shaping using nickel titanium, M-wire, and Gold wire: a micro-computed tomographic comparative study of one shape, ProTaper Next, and WaveOne gold instruments in maxillary first molars. J Endod 2019;45:62-67. https://doi.org/10.1016/j.joen.2018.09.013
  18. Zhang Y, Liu J, Gu Y, Wang J, Xu H, Zhang G. Analysis of second mesiobuccal root canal instrumentation in maxillary first molars with three nickel-titanium rotary instruments: a micro-computed tomographic study. Odontology 2021;109:496-505. https://doi.org/10.1007/s10266-020-00564-2
  19. Reeh ES, Messer HH, Douglas WH. Reduction in tooth stiffness as a result of endodontic and restorative procedures. J Endod 1989;15:512-516. https://doi.org/10.1016/S0099-2399(89)80191-8