ISSN 2528-9659 | E-ISSN 2148-9505
Original Article
Postoperative Positional and Dimensional Changes of Mandibular Canal after Bilateral Sagittal Split Set-Back Osteotomy
1 Private Practice, İstanbul, Turkey  
2 Department of Orthodontics and Dentofacial Orthopedics, Boston University School of Dental Medicine, MA, USA  
3 Department of Orthodontics, Marmara University School of Dentistry, İstanbul, Turkey  
Turk J Orthod 2017; 30: 110-117
DOI: 10.5152/TurkJOrthod.2017.17017
Key Words: Orthognatic surgery, mandibular canal, bilateral sagittal split osteotomy, set-back surgery, cone-beam computed tomography, 3D imaging
Abstract

Objective: This preliminary study was planned to provide information about preoperative mandibular canal (MC) position and the postoperative positional changes of MC and length in three dimensions, with the purpose of providing some assistance in reducing inferior alveolar neurosensory disturbance (IAND).


Methods
: MC was examined on CBCT data using SimPlant Pro Standalone 13.0. MC locations were measured in all dimensions, with respect to mandibular bony borders.


Results
: The results showed that MC is frequently located in the midthird of the ramus anteroposteriorly and superoinferiorly and in the midthird of the corpus superoinferiorly. Postoperatively, ramus width was increased, ramus length was decreased significantly, and MC was repositioned laterally and inferiorly. MC length was decreased on both sides, non-correlated with the set-back amounts.

 


Conclusion
: Preoperative results may be beneficial for the prediction of MC position for surgeons, and postoperative results will be used for the following studies to correlate postoperative positional changes with IAND.
 

 Cite this article as: İşcan D, Motro M, Acar A. Postoperative Positional and Dimensional Changes of Mandibular Canal after Bilateral Sagittal Split Set-Back Osteotomy. Turkish J Orthod 2017; 30: 110-7.

Key Words
Authors
All
Author's Corner
Survey
AVES | Copyright © 2018 Turkish Journal of Orthodontics | Latest Update: 29.08.2018