Morphometric Analysis of the Mandibular Canal, Anterior Loop, and Mental Foramen: A Cone-Beam Computed Tomography Evaluation

This study investigated the cone-beam computed tomography (CBCT)-based features of the mandibular canal, mental foramen, anterior loop, and accessory mental foramina with respect to age and sex. A total of 306 CBCT mandibular images were included in this retrospective study to measure the mandibular canal location and extension, the mental foramen position, the presence of the anterior loop, and the accessory mental foramina. The measurements were obtained in sagittal, coronal, and axial views. Descriptive statistics are presented. Sex-related differences, correlations, and comparisons were calculated using SPSS at 5% significance level. The mandibular canal was located more coronal and medial in male patients. The majority of cases had the mental foramen located just apical to the mandibular second premolar with a mean height of 2.94 mm and a mean length of 3.28 mm. Age affected the size of the mental foramen. The mental canal in all cases tended to show a coronal direction. Mesial extension of the anterior loop was found in 66.01% of the images while accessory mental foramina were detected in 2.6%. The complexity of the mandibular canal, mental foramen, anterior loop, and accessory mental foramina among Sudanese patients with respect to age and sex was confirmed.

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Location of the course of the mandibular canal, anterior loop and accessory mental foramen through cone-beam computed tomography

Surgical and Radiologic Anatomy ◽

10.1007/s00276-018-2081-6 ◽

2018 ◽

Vol 40 (12) ◽

pp. 1411-1417 ◽

Cited By ~ 1

Author(s):

Clarissa Lopes Vieira ◽

Suzanni do Amaral Rodrigues Veloso ◽

Fernanda Ferreira Lopes

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Mandibular Canal ◽

Mental Foramen ◽

Cone Beam ◽

Accessory Mental Foramen ◽

Anterior Loop

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Assessment of the anterior loop of the mandibular canal: A study using cone-beam computed tomography

Imaging Science in Dentistry ◽

10.5624/isd.2016.46.2.69 ◽

2016 ◽

Vol 46 (2) ◽

pp. 69 ◽

Cited By ~ 10

Author(s):

Eduarda Helena Leandro do Nascimento ◽

Maria Luiza dos Anjos Pontual ◽

Andréa dos Anjos Pontual ◽

Danyel Elias da Cruz Perez ◽

José Natal Figueiroa ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Mandibular Canal ◽

Cone Beam ◽

Anterior Loop

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Evaluation of the size and location of the mental foramen and anterior loop of the lower alveolar nerve in the Brazilian population using cone beam computed tomography

Research Society and Development ◽

10.33448/rsd-v10i8.17216 ◽

2021 ◽

Vol 10 (8) ◽

pp. e36410817216

Author(s):

Caroline Chepernate Vieira dos Santos ◽

Izabella Sol ◽

Karen Rawen Tonini ◽

Leda Maria Pescinini Salzedas ◽

Fernanda Costa Yogui ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Average Distance ◽

Mental Foramen ◽

Brazilian Population ◽

Cone Beam ◽

Common Location ◽

Anterior Loop ◽

Significant Difference ◽

Average Size

Objective: The aim of this study was to evaluate the size, shape and location of the mental foramen (MF) and anterior loop (AL) in the Brazilian population through the analysis of cone beam computed tomography (CBCT) and panoramic radiography (PR). Method: We analyzed the location, shape and size of the MF, the distance between the upper wall of the MF and the alveolar crest (AC), the size of the AL and the presence of lingual anastomosis. Results: Fifty PR and CBCT exams were analyzed. In relation to the MF, the most common location was between premolars (56%), the most common shape was the oval shape (83%) and the average size in the PR was 3.63 mm and in the CBCT was3.66 mm. The average distance from the MF to the AC in the PR was 17.29 mm and in the CBCT was 11.48 mm. The average AL size was 3 mm, the smallest being 1 mm and the largest being 5 mm. Static analysis was performed to verify the relationship between the distance from the foramen to the AC with the values that were found in the PR and CBCT, which showed a statistically significant difference (p=<0.001) between them. Lingual anastomosis could be seen in 22% of the analyzed hemimandibles. Conclusion: CBCT is a reliable diagnostic test for planning rehabilitation near the MF. The distance between the implant and the foramen must be analyzed individually.

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Frequency of accessory mental foramen and anatomical variability of mental nerve anterior loop in a Peruvian population: A retrospective cone-beam computed tomography study.

Journal Of Oral Research ◽

10.17126/joralres.2020.037 ◽

2020 ◽

Vol 9 (3) ◽

pp. 202-211

Author(s):

José Heberth Tofiño-Medina ◽

◽

Luis Ernesto Arriola-Guillén ◽

Yalil Augusto Rodríguez-Cárdenas ◽

Aron Aliaga-Del Castillo ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Morphological Characteristics ◽

Mental Foramen ◽

Cone Beam ◽

Anatomical Landmarks ◽

Mental Nerve ◽

Anterior Border ◽

Accessory Mental Foramen ◽

Anterior Loop

Objective: To evaluate the frequency of accessory mental foramen (AMF) and anatomical variants of the mental nerve anterior loop using cone-beam computed tomography (CBCT) in a Peruvian population. Material and methods: This retrospective cross-sectional study evaluated 80 hemi-mandibles from 40 subjects using CBCT. The sample included 38 females and 42 males, with an average age of 25±4.45 years. A 3D multi-planar reconstruction was performed to identify the location and presence of accessory mental foramina, their morphological characteristics (oval or circular), their position with respect to the mental foramen (MF), anterior loop (AL) path and other anatomical landmarks including lengths and angles. Statistical analyses included chi square and t-tests. The significance level was p<0.05. Results: The frequency of AMF was 17% and the average distance AL-MF was 4.76±1.97mm. The measurements of the anterior border of AL and MF to the inferior mandibular border showed significant differences according to the sex (p<0.001 and p=0.009, respectively). Conclusion: The AMF prevalence was approximately 17%. There is no association between the AMF position and its morphology, sex or side evaluated. The distances from the anterior border of the AL and from the inferior border of the MF to the inferior mandibular border were greater in males. These findings should be considered when planning implant or mini-implant placement in this region.

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Cone-beam computed tomography evaluation of bifid mandibular canal in a Turkish population

International Dental Research ◽

10.5577/intdentres.2018.vol8.no2.5 ◽

2018 ◽

Vol 8 (2) ◽

pp. 78-83 ◽

Cited By ~ 2

Author(s):

Nihat Laçin ◽

Emre Aytuğar ◽

İlknur Veli

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Turkish Population ◽

Mandibular Canal ◽

Cone Beam ◽

Chi Square ◽

Bifid Mandibular Canal ◽

Chi Square Test ◽

Male Patients ◽

The Right

Aim: The aim of the study was to examine the prevalence of bifid mandibular canals (BMC) in a Turkish population, using cone-beam computed tomography (CBCT). Methodology: The CBCT images of 350 untreated patients (178 male, 172 female ranging in age between 18 and 65,) were included in this study. The presence or absence of BMC was determined in axial, sagittal, and coronal planes by considering gender and side. For statistical evaluation, a chi‑square test was used to determine any differences in the prevalence of BMC with significance set at 5%. Results: BMCs were observed in 129 out of 700 sides (18.42%) and 97 out of 350 patients (27.71%), of which, 55 were in males and 42 in females. Regardless of gender, the right side was more frequently affected (73%). Male patients showed higher prevalence (15.71%) than the female patients (12%). Conclusion: BMC was observed in 27.71% of examined Turkish subjects and detected more frequently in males and on the right side.

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Relationship between mandibular incisive canal and mental foramen using cone-beam computed tomography in a selected Brazilian Amazon population

RSBO ◽

10.21726/rsbo.v15i1.609 ◽

2018 ◽

Vol 15 (1) ◽

pp. 12-09

Author(s):

Cláudia Gemaque Marinho ◽

Pedro Luiz de Carvalho ◽

Edson Marcos Leal Soares Ramos ◽

Fabricio Mesquita Tuji ◽

Nicolau Conte Neto

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Brazilian Amazon ◽

Mandibular Canal ◽

Mental Foramen ◽

Cone Beam ◽

Median Line ◽

Anatomic Structure ◽

Incisive Canal ◽

The Mean

The mandibular canal is an anatomic structure that extends bilaterally from the mandibular foramen to the mental foramen. Objective: To identify the presence, extension, and length of the mandibular incisive canal with a cone-beam computed tomography, and to determine correlations with the positioning of the mental foramen and mandibular canal in a selected Brazilian Amazon population. Material and methods: The measurements of the incisive canal that ends at the mandible’s lower buccal and lingual border, at its initial and terminal portions, were obtained from 95 odontological examinations using cone-beam computed tomography. These measurements were compared with the measurements of the distance between the mandibular canal ending at the same cortices in 2 distinct regions at the mental foramen region. Pearson’s correlation test was used to establish a relationship between these measurements. Results: The mandibular incisive canal’s bilateral identification mean age was of 44.29 ± 11.04 y and the mean length was 10.38 ± 4.01 mm. Moderate correlations were found between the measurements of the mandibular incisive canal, mental foramen, and mandibular canal. Conclusion: The mandibular incisive canal can reach the region of the median line, and it did not present differences between the genders or for the length and distance of the mandibular incisive canal to the cortices ending at the mandible base.

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