MORPHOLOGIC VARIATIONS OF THE INFERIOR ALVEOLAR NERVE CANAL THROUGH THREE-DIMENSIONAL COMPUTED TOMOGRAPHY

Abstract Background The purpose of this study was to investigate the differences in configuration and dimensions of the anterior loop of the inferior alveolar nerve (ALIAN) in patients with and without mandibular asymmetry. Method Preoperative computed tomography images of patients who had undergone orthognathic surgery from January 2016 to December 2018 at a single institution were analyzed. Subjects were classified into two groups as “Asymmetry group” and “Symmetry group”. The distance from the most anterior and most inferior points of the ALIAN (IANant and IANinf) to the vertical and horizontal reference planes were measured (dAnt and dInf). The distance from IANant and IANinf to the mental foramen were also calculated (dAnt_MF and dInf_MF). The length of the mandibular body and symphysis area were measured. All measurements were analyzed using 3D analysis software. Results There were 57 total eligible subjects. In the Asymmetry group, dAnt and dAnt_MF on the non-deviated side were significantly longer than the deviated side (p < 0.001). dInf_MF on the non-deviated side was also significantly longer than the deviated side (p = 0.001). Mandibular body length was significantly longer on the non-deviated side (p < 0.001). There was no significant difference in length in the symphysis area (p = 0.623). In the Symmetry group, there was no difference between the left and right sides for all variables. Conclusion In asymmetric patients, there is a difference tendency in the ALIAN between the deviated and non-deviated sides. In patients with mandibular asymmetry, this should be considered during surgery in the anterior mandible.

Download Full-text

The Course of the Inferior Alveolar Nerve in Craniofacial Microsomia: Virtual Dissection Using Three-Dimensional Computed Tomography Image Analysis

Plastic & Reconstructive Surgery ◽

10.1097/00006534-200204150-00005 ◽

2002 ◽

Vol 109 (5) ◽

pp. 1513-1521 ◽

Cited By ~ 3

Author(s):

Pankaj Tiwari ◽

Douglas H. L. Chin ◽

Court B. Cutting ◽

Michael T. Longaker ◽

Roy Holliday ◽

...

Keyword(s):

Computed Tomography ◽

Image Analysis ◽

Three Dimensional ◽

Inferior Alveolar Nerve ◽

Craniofacial Microsomia ◽

Tomography Image ◽

Virtual Dissection ◽

Computed Tomography Image

Download Full-text

LIPOMA OF THE INFERIOR ALVEOLAR NERVE CANAL : EXCEPTIONAL LOCATION OF INTRAOSSEOUS LIPOMA

10.36106/ijsr/0525648 ◽

2019 ◽

pp. 1-2

Author(s):

Hicham Sabani

Keyword(s):

Computed Tomography ◽

Soft Tissue ◽

Rare Case ◽

Inferior Alveolar Nerve ◽

Soft Tissue Tumors ◽

Cone Beam ◽

Diagnostic Challenge ◽

Intraosseous Lipoma ◽

Histopathologic Analysis ◽

Inferior Alveolar Nerve Canal

Lipomas are the most commonly occurring soft tissue tumors, being intraosseous involvement very rare, and the jaw is its most uncommon bone location. Thus intraosseous mandibular lipomas constitute a real diagnostic challenge due to the unspecic clinical and radiographic features, therefore, only 28 cases have been reported in the literature. Herein we report an extremely rare case of an intraosseous mandibular lipoma that initially developed in Inferior alveolar nerve canal, characterize with dental cone beam computed tomography, and conrmed with histopathologic analysis after surgery. To the best of our knowledge, our case is one of the rst cases of intraosseous mandibular lipomas involving the inferior alveolar nerve canal never been previously reported. Their rarity reinforces the need to document each and every case.

Download Full-text