Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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Anatomical position of the mandibular canal in relation to the buccal cortical bone: relevance to sagittal split osteotomy

  • Lee, Han Eol (Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University) ;
  • Han, Se Jin (Department of Oral and Maxillofacial Surgery, College of Dentistry, Dankook University)
  • Received : 2018.03.14
  • Accepted : 2018.04.30
  • Published : 2018.08.31
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Abstract

Objectives: Classification of the degree of postoperative nerve damage according to contact with the mandibular canal and buccal cortical bone has been studied, but there is a lack of research on the difference in postoperative courses according to contact with buccal cortical bone. In this study, we divided patients into groups according to contact between the mandibular canal and the buccal cortical bone, and we compared the position of the mandibular canal in the second and first molar areas. Materials and Methods: Class III patients who visited the Dankook University Dental Hospital were included in this study. The following measurements were made at the second and first molar positions: (1) length between the outer margin of the mandibular canal and the buccal cortical margin (a); (2) mandibular thickness at the same level (b); (3) Buccolingual $ratio=(a)/(b){\times}100$; and (4) length between the inferior margin of the mandibular canal and the inferior cortical margin. Results: The distances from the canal to the buccal bone and from the canal to the inferior bone and mandibular thickness were significantly larger in Group II than in Group I. The buccolingual ratio of the canal was larger in Group II in the second molar region. Conclusion: If mandibular canal is in contact with the buccal cortical bone, the canal will run closer to the buccal bone and the inferior border of the mandible in the second and first molar regions.

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References

  1. Kawashima Y, Sakai O, Shosho D, Kaneda T, Gohel A. Proximity of the mandibular canal to teeth and cortical bone. J Endod 2016;42:221-4. https://doi.org/10.1016/j.joen.2015.11.009
  2. Sato I, Ueno R, Kawai T, Yosue T. Rare courses of the mandibular canal in the molar regions of the human mandible: a cadaveric study. Okajimas Folia Anat Jpn 2005;82:95-101. https://doi.org/10.2535/ofaj.82.95
  3. Yamada T, Ishihama K, Yasuda K, Hasumi-Nakayama Y, Ito K, Yamaoka M, et al. Inferior alveolar nerve canal and branches detected with dental cone beam computed tomography in lower third molar region. J Oral Maxillofac Surg 2011;69:1278-82. https://doi.org/10.1016/j.joms.2010.07.010
  4. Xu GZ, Yang C, Fan XD, Yu CQ, Cai XY, Wang Y, et al. Anatomic relationship between impacted third mandibular molar and the mandibular canal as the risk factor of inferior alveolar nerve injury. Br J Oral Maxillofac Surg 2013;51:e215-9. https://doi.org/10.1016/j.bjoms.2013.01.011
  5. Yu IH, Wong YK. Evaluation of mandibular anatomy related to sagittal split ramus osteotomy using 3-dimensional computed tomography scan images. Int J Oral Maxillofac Surg 2008;37:521-8. https://doi.org/10.1016/j.ijom.2008.03.003
  6. Westermark A, Bystedt H, von Konow L. Inferior alveolar nerve function after mandibular osteotomies. Br J Oral Maxillofac Surg 1998;36:425-8. https://doi.org/10.1016/S0266-4356(98)90457-0
  7. Westermark A, Bystedt H, von Konow L. Inferior alveolar nerve function after sagittal split osteotomy of the mandible: correlation with degree of intraoperative nerve encounter and other variables in 496 operations. Br J Oral Maxillofac Surg 1998;36:429-33. https://doi.org/10.1016/S0266-4356(98)90458-2
  8. Yoshida T, Nagamine T, Kobayashi T, Michimi N, Nakajima T, Sasakura H, et al. Impairment of the inferior alveolar nerve after sagittal split osteotomy. J Craniomaxillofac Surg 1989;17:271-7. https://doi.org/10.1016/S1010-5182(89)80095-2
  9. Lee CH, Lee BS, Choi BJ, Lee JW, Ohe JY, Yoo HY, et al. Recovery of inferior alveolar nerve injury after bilateral sagittal split ramus osteotomy (BSSRO): a retrospective study. Maxillofac Plast Reconstr Surg 2016;38:25. https://doi.org/10.1186/s40902-016-0068-y
  10. Wittwer G, Adeyemo WL, Beinemann J, Juergens P. Evaluation of risk of injury to the inferior alveolar nerve with classical sagittal split osteotomy technique and proposed alternative surgical techniques using computer-assisted surgery. Int J Oral Maxillofac Surg 2012;41:79-86. https://doi.org/10.1016/j.ijom.2011.08.001
  11. Panula K, Finne K, Oikarinen K. Neurosensory deficits after bilateral sagittal split ramus osteotomy of the mandible--influence of soft tissue handling medial to the ascending ramus. Int J Oral Maxillofac Surg 2004;33:543-8. https://doi.org/10.1016/j.ijom.2003.11.005
  12. Plooij JM, Naphausen MT, Maal TJ, Xi T, Rangel FA, Swennnen G, et al. 3D evaluation of the lingual fracture line after a bilateral sagittal split osteotomy of the mandible. Int J Oral Maxillofac Surg 2009;38:1244-9. https://doi.org/10.1016/j.ijom.2009.07.013
  13. Muto T, Takahashi M, Akizuki K. Evaluation of the mandibular ramus fracture line after sagittal split ramus osteotomy using 3-dimensional computed tomography. J Oral Maxillofac Surg 2012;70:648-52. https://doi.org/10.1016/j.joms.2012.07.048
  14. Rich J, Golden BA, Phillips C. Systematic review of preoperative mandibular canal position as it relates to postoperative neurosensory disturbance following the sagittal split ramus osteotomy. Int J Oral Maxillofac Surg 2014;43:1076-81. https://doi.org/10.1016/j.ijom.2014.03.020
  15. Tsuji Y, Muto T, Kawakami J, Takeda S. Computed tomographic analysis of the position and course of the mandibular canal: relevance to the sagittal split ramus osteotomy. Int J Oral Maxillofac Surg 2005;34:243-6. https://doi.org/10.1016/j.ijom.2004.06.001
  16. Yamamoto R, Nakamura A, Ohno K, Michi KI. Relationship of the mandibular canal to the lateral cortex of the mandibular ramus as a factor in the development of neurosensory disturbance after bilateral sagittal split osteotomy. J Oral Maxillofac Surg 2002;60:490-5. https://doi.org/10.1053/joms.2002.31843
  17. Fridrich KL, Holton TJ, Pansegrau KJ, Buckley MJ. Neurosensory recovery following the mandibular bilateral sagittal split osteotomy. J Oral Maxillofac Surg 1995;53:1300-6; discussion 1306-7. https://doi.org/10.1016/0278-2391(95)90588-X
  18. Kim HJ, Lee HY, Chung IH, Cha IH, Yi CK. Mandibular anatomy related to sagittal split ramus osteotomy in Koreans. Yonsei Med J 1997;38:19-25. https://doi.org/10.3349/ymj.1997.38.1.19
  19. Martone CH, Ben-Josef AM, Wolf SM, Mintz SM. Dimorphic study of surgical anatomic landmarks of the lateral ramus of the mandible. Oral Surg Oral Med Oral Pathol 1993;75:436-8. https://doi.org/10.1016/0030-4220(93)90166-2
  20. Pogrel MA, Schmidt BL, Ammar A. The presence of the antilingula and its relationship to the true lingula. Br J Oral Maxillofac Surg 1995;33:235-8. https://doi.org/10.1016/0266-4356(95)90007-1
  21. Park HS, Lee JH. A comparative study on the location of the mandibular foramen in CBCT of normal occlusion and skeletal class II and III malocclusion. Maxillofac Plast Reconstr Surg 2015;37:25. https://doi.org/10.1186/s40902-015-0024-2
  22. Zhou C, Jeon TH, Jun SH, Kwon JJ. Evaluation of mandibular lingula and foramen location using 3-dimensional mandible models reconstructed by cone-beam computed tomography. Maxillofac Plast Reconstr Surg 2017;39:30. https://doi.org/10.1186/s40902-017-0128-y
  23. Nasel CJ, Pretterklieber M, Gahleitner A, Czerny C, Breitenseher M, Imhof H. Osteometry of the mandible performed using dental MR imaging. AJNR Am J Neuroradiol 1999;20:1221-7.
  24. Levine MH, Goddard AL, Dodson TB. Inferior alveolar nerve canal position: a clinical and radiographic study. J Oral Maxillofac Surg 2007;65:470-4. https://doi.org/10.1016/j.joms.2006.05.056
  25. Promma L, Sakulsak N, Putiwat P, Amarttayakong P, Iamsaard S, Trakulsuk H, et al. Cortical bone thickness of the mandibular canal and implications for bilateral sagittal split osteotomy: a cadaveric study. Int J Oral Maxillofac Surg 2017;46:572-7. https://doi.org/10.1016/j.ijom.2016.12.008
  26. Nagadia R, Tay AB, Chan LL, Chan ES. The spatial location of the mandibular canal in Chinese: a CT study. Int J Oral Maxillofac Surg 2011;40:1401-5. https://doi.org/10.1016/j.ijom.2011.07.904
  27. Yoshioka I, Tanaka T, Khanal A, Habu M, Kito S, Kodama M, et al. Relationship between inferior alveolar nerve canal position at mandibular second molar in patients with prognathism and possible occurrence of neurosensory disturbance after sagittal split ramus osteotomy. J Oral Maxillofac Surg 2010;68:3022-7. https://doi.org/10.1016/j.joms.2009.09.046
  28. Huang CY, Liao YF. Anatomical position of the mandibular canal in relation to the buccal cortical bone in Chinese patients with different dentofacial relationships. J Formos Med Assoc 2016;115:981-90. https://doi.org/10.1016/j.jfma.2015.10.004
  29. Yoshioka I, Tanaka T, Habu M, Oda M, Kodama M, Kito S, et al. Effect of bone quality and position of the inferior alveolar nerve canal in continuous, long-term, neurosensory disturbance after sagittal split ramus osteotomy. J Craniomaxillofac Surg 2012;40:e178-83. https://doi.org/10.1016/j.jcms.2011.09.003

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