Morphometric Analysis of the Mandibular Canal and Its Anatomical Variants in a Chilean Subpopulation: Cone Beam Computed Tomography Study

Author:

Guzmán Jacob1,Abarca Jaime2ORCID,Navarro Pablo34ORCID,Garay Ivonne5,Arnabat-Domínguez Josep67ORCID,Betancourt Pablo48ORCID

Affiliation:

1. Program of Master in Dental Science, Facultad de Odontología, Universidad de La Frontera, Temuco 4811230, Chile

2. Faculty of Dentistry, Universidad San Sebastián, Sede Patagonia, Puerto Montt 5480000, Chile

3. Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Temuco 4810101, Chile

4. Department of Integral Adultos, Facultad de Odontología, Universidad de La Frontera, Temuco 4780000, Chile

5. Private Practice, Radiologist, Temuco 4780000, Chile

6. Faculty of Medicine and Health Sciences, University of Barcelona, 08907 Barcelona, Spain

7. Idibell Institute, 08908 Barcelona, Spain

8. Endodontic Laboratory, Center for Research in Dental Sciences (CICO), Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile

Abstract

The inferior alveolar nerve (IAN), contained within the mandibular canal (MC), is a structure prone to damage in clinical and surgical procedures on the mandible. This study aimed to analyze the MC morphology and its anatomical variants in a Chilean subpopulation using cone beam computed tomography (CBCT). In total, 342 images from patients with the following parameters were observed: 120 kV, 9 mA, field of view 12 × 9 MC, and voxel size 0.12 mm. The average length of the MC recorded a mean value of 70.493 ± 4.987 mm on the right side and 70.805 ± 5.177 mm on the left side. The location of the mental foramen (MF) was most frequently found between the mandibular first and second premolar. The greatest bone thickness was found at the level of the basilar border of the 2MPM. The root closest to the MC was distal from the mandibular second molar. The lowest thickness was in the lingual area at 1MM. The prevalence of the anterior loop (AL) (61.5%) and the retromolar canal (RC) (17.5%) showed no significant differences between men and women. The results obtained showed that the morphology of the MC in the Chilean subpopulation can vary.

Funder

Research Directorate of Universidad de La Frontera

Publisher

MDPI AG

Reference37 articles.

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