Anterior loop of the mental nerve, mental foramen and incisive nerve emergency: tridimensional assessment and surgical applications

Prados-Frutos, Juan Carlos; Salinas-Goodier, Carmen; Manchón, Ángel; Rojo, Rosa

doi:10.1007/s00276-016-1690-1

Cited by 20 publications

(14 citation statements)

References 29 publications

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“…Measurements made on cross sections do not get an optimal result because two-dimensional slices are subjected to interpretation efficiency of the operators. On the other hand it was argued that, determining the length of the loop through panoramic views from CBCT scans with high thickness is similar to researches using panoramic radiographs (12,(35)(36)(37)(38).…”

Section: Discussionmentioning

confidence: 74%

Assessment of mental loop using cone beam computed tomography in a sample of Egyptians

nadoury

Gaweesh

Anwar

et al. 2021

Alexandria Dental Journal

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INTRODUCTION:Although the inferior alveolar nerve had been described as a single entity that travels through the mandibular canal and leaves it through the mental foramen directly giving rise to mental nerve, presence of mental loop was reported. Improper identification of mental loop led to increasing the incidence of nerve injury during surgical procedures especially implant placement. OBJECTIVE OF THE STUDY:The purpose of this study was to assess mental loop and its length among a sample of Egyptians, using cone beam computed tomography (CBCT). MATERIALS AND METHODS: Two hundred and sixty-seven CBCTs were collected in which one hundred were males and one hundred and sixty-seven were females, then evaluated for the presence of the mental loop. The length of the loop was measured on reconstructed panoramic views of CBCT using on demand software. RESULTS: Mental loop was present in one hundred and nine patients (40% of the patients), 63 females and 46 males. The minimum length observed was 2.27 mm. while the maximum length was 7.18mm and the mean length was 4.36±.96mm. There was no significant difference between males and females. CONCLUSIONS: High prevalence of mental loop was detected in Egyptians. Based on this finding proper identification of mental loop by the method explained in this study prior to surgical planning is essential.

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Section: Discussionmentioning

confidence: 74%

Assessment of mental loop using cone beam computed tomography in a sample of Egyptians

nadoury

Gaweesh

Anwar

et al. 2021

Alexandria Dental Journal

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“…With the intention of improving the biomechanics of the prosthesis, reducing the distance from the distal cantilever, in many cases, the implants are installed close to the mental foramen exit, not taking into account the presence of the AL (Prados-Frutos et al, 2017). Velasco-Torre et al ( 2017) report in their study that 37% of the patients who had implants installed in the intraforaminal region had sensory changes, and 10 to 15% of these changes were permanent, justifying the relevance of studying the anatomical variations of this region (Wismeijer et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

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

Santos

Sol

Tonini

et al. 2021

RSD

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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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“…12-14 In contrast, other studies found a low prevalence of the loop from 7% to 53.7%. 15, 16 The possible reason for this might be different methods of CBCT assessment. Each method has difficulty in determining the most anterior point of the loop; however, transverse oblique method makes the assessment reliable as multiple anatomical structures can be displayed in the same view.…”

Section: Discussionmentioning

confidence: 99%

CBCT evaluation of anterior loop length and mental foramen position in Vietnamese Population (CBCT Evaluation of Anterior Loop Length)

Nguyen¹,

Putra²,

Nguyen³

et al. 2021

J Dentomaxillofac Sci

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Objective:The purpose of this study was to evaluate the prevalence and length of anterior loop, and determine the accurate position of the mental foramen in Vietnamese population. Material and Methods: One hundred and twelve CBCT scans taken within July 2017 until February 2020 were used in this study. All images were evaluated using OsiriX DICOM Viewer. The loop length on both side of the mandible was assessed using oblique transverse method by one examiner based on a standardized procedure. The data collected were analyzed using SPSS ver.26.0. Results:The prevalence of the loop was 92.9% of the sample. The mean of anterior loop length was 1.72 ± 1.00mm. There was no significant difference between genders or sides of the mandible. The most common position of the mental foramen was in line with the axis of the second premolar and below the apices of the premolars. Conclusion: Cautions should be taken when placing implant in proximity to the mental foramen as anterior loop is present in most of the case. Based on this study, it is considered safer to place implant 5mm anterior to the mental foramen for Vietnamese population.

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Anterior loop of the mental nerve, mental foramen and incisive nerve emergency: tridimensional assessment and surgical applications

Cited by 20 publications

References 29 publications

Assessment of mental loop using cone beam computed tomography in a sample of Egyptians

Assessment of mental loop using cone beam computed tomography in a sample of Egyptians

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

CBCT evaluation of anterior loop length and mental foramen position in Vietnamese Population (CBCT Evaluation of Anterior Loop Length)

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