Mandibular canal branches supplying the mandibular third molar observed on cone beam computed tomographic images: Reports of four cases

콘빔형 전단화단층영상에서 관찰되는 하악관 분지 4 증례

  • Lee, Jae-Seo (Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University) ;
  • Yoon, Suk-Ja (Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University) ;
  • Kang, Byung-Cheol (Department of Oral and Maxillofacial Radiology, School of Dentistry, Dental Science Research Institute, Chonnam National University)
  • Published : 2009.12.31

Abstract

Bifid mandibular canal can be an anatomic variation. This condition can lead to complication when performing mandibular anesthesia or during extraction of lower third molar, placement of implants and surgery in the mandible. Four patients underwent preoperative imaging for extraction of third molars using CBCT (CB Mercuray, Hitachi, Japan). The axial images were processed with CBworks program 2.1 (CyberMed Inc., Seoul, Korea). The branches for supplying the lower third molar were identified mainly on cross-sectional and panoramic images of CBCT. Since the location and configuration of mandibular canal variations are important in any mandibular surgical procedures, we report 4 cases of bifid mandibular canal with panoramic and the CBCT images.

Keywords

References

  1. Naitoh M, Hiraiwa Y, Aimiya H, Ariji E. Observation of bifid mandibular canal using cone-beam computerized tomography. Int J Oral Maxillofac Implants 2009; 24 : 155-9.
  2. Claeys V, Wackens G. Bifid mandibular canal: literature review and case report. Dentomaxillofac Radiol 2005; 34 : 55-8. https://doi.org/10.1259/dmfr/23146121
  3. Langlais RP, Broadus R, Glass BJ. Bifid mandibular canals in panoramic radiographs. J Am Dent Assoc 1985; 110 : 923-6.
  4. Rouas P, Nancy J, Bar D. Identification of double mandibular canals: literature review and three case reports with CT scans and cone beam CT. Dentomaxillofac Radiol 2007; 36 : 34-8. https://doi.org/10.1259/dmfr/27374727
  5. Sanchis JM, Penarrocha M, Soler F. Bifid mandibular canal. J Oral Maxillofac Surg 2003; 61 : 422-4. https://doi.org/10.1053/joms.2003.50004
  6. White SC, Pharoah MJ. Oral radiology, principles and interpretation: Mosby Elsevier; 2009.
  7. Nortje CJ, Farman AG, Grotepass FW. Variations in the normal anatomy of the inferior dental (mandibular) canal: a retrospective study of panoramic radiographs from 3612 routine dental patients. Br J Oral Sur 1977; 15 : 55-63. https://doi.org/10.1016/0007-117X(77)90008-7
  8. Klinge B, Petersson A, Maly P. Location of the mandibular canal: comparison of macroscopic findings, conventional radiography, and computed tomography. Int J Oral Maxillofac Implants 1989; 4 : 327-32.
  9. Nkenke E, Radespiel-Troger M, Wiltfang J, Schultze-Mosgau S, Winkler G, Neukam FW. Morbidity of harvesting of retromolar bone grafts: a prospective study. Clin Oral Implants Res 2002; 13 : 514-21. https://doi.org/10.1034/j.1600-0501.2002.130511.x