Evaluation of the Possible Relationship between the Curvature and Horizontal Course of the Inferior Alveolar Canal

Article ID: e130223213595 Pages: 7

  • * (Excluding Mailing and Handling)

Abstract

Objectives: The position of the inferior alveolar canal (IAC) and its course in the mandible is crucial to prevent complications in oral surgical procedures. Therefore, the present study aims to predict the course of IAC using landmarks specific to the mandible and to correlate with cone-beam computed tomography images.

Methods: On the included panoramic radiographs (n=529), the closest point of the IAC to the inferior border of the mandible (Q) was determined, and the distances of this point to the mental (Mef) and mandibular foramen (Maf) were measured in millimeters. To determine the buccolingual course of the IAC on CBCT images (n=529), the distances from the center of the canal to the buccal and lingual cortices and between the cortices were measured at the level of the root apices of the first and second premolars and molars. Also, the positions of the Mef to adjacent premolars and molars were classified.

Results: The most common position of mental foramen was Type-3 (37.1%). On the coronal plane, it was also observed that as the Q point approaches the Mef, the IAC is located in the mandible's center at the second premolar level (p=0.008) and moves away from the midline at the level of the first molar (p=0.007).

Conclusion: Based on the results, a correlation was observed between the horizontal course of the IAC and its proximity to the inferior border of the mandible. Therefore, the curvature of the IAC and its proximity to the mental foramen should be considered in oral surgeries.

Graphical Abstract

[1]
Săndulescu M, Trăistaru M, Niţescu M, Sirbu I. A morphological study of the mandibular canal in partially edentulous patients. Ther Pharmacol Clin Toxicol 2010; 14(1): 45-52.
[2]
Ozturk A, Potluri A, Vieira AR. Position and course of the mandibular canal in skulls. Oral Surg Oral Med Oral Pathol Oral Radiol 2012; 113(4): 453-8.
[http://dx.doi.org/10.1016/j.tripleo.2011.03.038] [PMID: 22676925]
[3]
Liu T, Xia B, Gu Z. Inferior alveolar canal course: a radiographic study. Clin Oral Implants Res 2009; 20(11): 1212-8.
[http://dx.doi.org/10.1111/j.1600-0501.2009.01736.x] [PMID: 19719735]
[4]
Robinson PP. Observations on the recovery of sensation following inferior alveolar nerve injuries. Br J Oral Maxillofac Surg 1988; 26(3): 177-89.
[http://dx.doi.org/10.1016/0266-4356(88)90161-1] [PMID: 3165015]
[5]
Amorim MM, Borini CB, Lopes SLPC, Haiter-Neto F, Caria PHF. Morphological description of mandibular canal in panoramic radiographs of brazilian subjects: Association between anatomic characteristic and clinical procedures. Int J Morphol 2009; 27(4): 27.
[http://dx.doi.org/10.4067/S0717-95022009000400044]
[6]
Abdallah Edrees MF, Moustafa Attia A, Abd Elsattar MF, Fahmy Gobran HG, Ismail Ahmed A. Course and topographic relationships of mandibular canal: A cone beam computed tomography study. Int J Dent Oral Sci 2017; 4: 444-9.
[7]
Lascala CA, Panella J, Marques MM. Analysis of the accuracy of linear measurements obtained by cone beam computed tomography (CBCT-NewTom). Dentomaxillofac Radiol 2004; 33(5): 291-4.
[http://dx.doi.org/10.1259/dmfr/25500850] [PMID: 15585804]
[8]
Berco M, Rigali PH Jr, Miner RM, DeLuca S, Anderson NK, Will LA. Accuracy and reliability of linear cephalometric measurements from cone-beam computed tomography scans of a dry human skull. Am J Orthod Dentofacial Orthop 2009; 136(1): 17.e1-9.
[http://dx.doi.org/10.1016/j.ajodo.2008.08.021] [PMID: 19577142]
[9]
Al-Salehi SK, Horner K. Impact of cone beam computed tomography (CBCT) on diagnostic thinking in endodontics of posterior teeth: A before- after study. J Dent 2016; 53: 57-63.
[http://dx.doi.org/10.1016/j.jdent.2016.07.012] [PMID: 27461179]
[10]
Pohlenz P, Blessmann M, Blake F, Heinrich S, Schmelzle R, Heiland M. Clinical indications and perspectives for intraoperative cone-beam computed tomography in oral and maxillofacial surgery. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007; 103(3): 412-7.
[http://dx.doi.org/10.1016/j.tripleo.2006.05.008] [PMID: 17321455]
[11]
Ali SP, Gupta J. Cone beam computed tomography in oral implants. Natl J Maxillofac Surg 2013; 4(1): 2-6.
[http://dx.doi.org/10.4103/0975-5950.117811] [PMID: 24163545]
[12]
Koong B. Cone beam imaging: Is this the ultimate imaging modality? Clin Oral Implants Res 2010; 21(11): 1201-8.
[http://dx.doi.org/10.1111/j.1600-0501.2010.01996.x] [PMID: 21039890]
[13]
Han YS, Lee H, Seo BM. Fate of mandibular canals displaced by enlarged cystic lesions: Does the inferior alveolar neurovascular bundle relocate to its original position? Br J Oral Maxillofac Surg 2018; 56(4): 292-8.
[http://dx.doi.org/10.1016/j.bjoms.2018.02.013] [PMID: 29559271]
[14]
Cartes G, Garay I, Deana NF, Navarro P, Alves N. Mandibular canal course and the position of the mental foramen by panoramic X-ray in Chilean individuals. Biomed Res Int 2018; 2018
[15]
Sheth K, Banga KS, Pawar AM, Gutmann JL, Kim HC. Shape and anatomical relationship of the mental foramen to the mandibular premolars in an Indian sub-population: A retrospective CBCT analysis. Restor Dent Endod 2022; 47(1): e1.
[http://dx.doi.org/10.5395/rde.2022.47.e1] [PMID: 35284321]
[16]
Faul F, Erdfelder E, Lang AG, Buchner A. G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behav Res Methods 2007; 39(2): 175-91.
[http://dx.doi.org/10.3758/BF03193146] [PMID: 17695343]
[17]
Landis JR, Koch GG. An application of hierarchical kappa-type statistics in the assessment of majority agreement among multiple observers. Biometrics 1977; 33(2): 363-74.
[http://dx.doi.org/10.2307/2529786] [PMID: 884196]
[18]
Escoda-Francoli J, Canalda-Sahli C, Soler A, Figueiredo R, Gay-Escoda C. Inferior alveolar nerve damage because of overextended endodontic material: A problem of sealer cement biocompatibility? J Endod 2007; 33(12): 1484-9.
[http://dx.doi.org/10.1016/j.joen.2007.09.003] [PMID: 18037065]
[19]
Pogrel MA. Damage to the inferior alveolar nerve as the result of root canal therapy. J Am Dent Assoc 2007; 138(1): 65-9.
[http://dx.doi.org/10.14219/jada.archive.2007.0022] [PMID: 17197403]
[20]
Kwon KH, Sim KB, Lee JM. Evaluation of the course of the inferior alveolar canal in the mandibular ramus using cone beam computed tomography. J Korean Assoc Oral Maxillofac Surg 2012; 38(4): 231-9.
[http://dx.doi.org/10.5125/jkaoms.2012.38.4.231]
[21]
Mirbeigi S, Safaee A, Ezoddini F, Khojastepour L, Navab-Azam A. Buccolingual course of the inferior alveolar canal in different mental foramen locations: A cone beam computed tomography study of an Iranian population. Int J Appl Basic Med Res 2016; 6(4): 262-6.
[http://dx.doi.org/10.4103/2229-516X.192589] [PMID: 27857894]
[22]
Pyun JH, Lim YJ, Kim MJ, Ahn SJ, Kim J. Position of the mental foramen on panoramic radiographs and its relation to the horizontal course of the mandibular canal: A computed tomographic analysis. Clin Oral Implants Res 2013; 24(8): 890-5.
[http://dx.doi.org/10.1111/j.1600-0501.2011.02400.x] [PMID: 22220715]
[23]
Worthington P. Injury to the inferior alveolar nerve during implant placement: A formula for protection of the patient and clinician. Int J Oral Maxillofac Implants 2004; 19(5): 731-4.
[PMID: 15508990]