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Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve

Background Trigeminal-facial nerve communications have been recognized for over 100 years. More specifically, the mental nerve (MN) and marginal mandibular branch of the facial nerve (MMb) communication have been studied but the termination of these branches remains unclear. Therefore, we aim to cla...

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Autores principales: Iwanaga, Joe, Kishimoto, Naotaka, Ibaragi, Soichiro, Cardona, Juan J, Chaiyamoon, Arada, Hur, Mi-Sun, Nakamura, Yoshiaki, Kusukawa, Jingo, Tubbs, R. Shane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cureus 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922440/
https://www.ncbi.nlm.nih.gov/pubmed/36788887
http://dx.doi.org/10.7759/cureus.33733
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author Iwanaga, Joe
Kishimoto, Naotaka
Ibaragi, Soichiro
Cardona, Juan J
Chaiyamoon, Arada
Hur, Mi-Sun
Nakamura, Yoshiaki
Kusukawa, Jingo
Tubbs, R. Shane
author_facet Iwanaga, Joe
Kishimoto, Naotaka
Ibaragi, Soichiro
Cardona, Juan J
Chaiyamoon, Arada
Hur, Mi-Sun
Nakamura, Yoshiaki
Kusukawa, Jingo
Tubbs, R. Shane
author_sort Iwanaga, Joe
collection PubMed
description Background Trigeminal-facial nerve communications have been recognized for over 100 years. More specifically, the mental nerve (MN) and marginal mandibular branch of the facial nerve (MMb) communication have been studied but the termination of these branches remains unclear. Therefore, we aim to classify the anatomical communication between the MN and MMb by its course. Methods Sixty sides from thirty adult cadaveric heads were dissected. The communicating branches were dissected and observed anatomically and histologically. Results Communication between the MN and MMb was found on all sides. Based on the course, the communication was classified into two types, superior and anterior. For the superior type, a small branch of the MN and MMb join and travel superiorly to reach the lower lip area. The communication was observed at the level of the mental foramen or above it. For the anterior type, a small branch of the MN and MMb join and travel anteriorly to reach the chin area. The termination was either in the subcutaneous tissue of the chin or in the mentalis. This communication was observed below the mental foramen. Histological observation revealed that these communications contained two or more perineuria. Conclusions Although the function of such neural communications is still unclear, this study helps better understand the anatomical variants of these unions and provides a novel classification system.
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spelling pubmed-99224402023-02-13 Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve Iwanaga, Joe Kishimoto, Naotaka Ibaragi, Soichiro Cardona, Juan J Chaiyamoon, Arada Hur, Mi-Sun Nakamura, Yoshiaki Kusukawa, Jingo Tubbs, R. Shane Cureus Anatomy Background Trigeminal-facial nerve communications have been recognized for over 100 years. More specifically, the mental nerve (MN) and marginal mandibular branch of the facial nerve (MMb) communication have been studied but the termination of these branches remains unclear. Therefore, we aim to classify the anatomical communication between the MN and MMb by its course. Methods Sixty sides from thirty adult cadaveric heads were dissected. The communicating branches were dissected and observed anatomically and histologically. Results Communication between the MN and MMb was found on all sides. Based on the course, the communication was classified into two types, superior and anterior. For the superior type, a small branch of the MN and MMb join and travel superiorly to reach the lower lip area. The communication was observed at the level of the mental foramen or above it. For the anterior type, a small branch of the MN and MMb join and travel anteriorly to reach the chin area. The termination was either in the subcutaneous tissue of the chin or in the mentalis. This communication was observed below the mental foramen. Histological observation revealed that these communications contained two or more perineuria. Conclusions Although the function of such neural communications is still unclear, this study helps better understand the anatomical variants of these unions and provides a novel classification system. Cureus 2023-01-13 /pmc/articles/PMC9922440/ /pubmed/36788887 http://dx.doi.org/10.7759/cureus.33733 Text en Copyright © 2023, Iwanaga et al. https://creativecommons.org/licenses/by/3.0/This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Anatomy
Iwanaga, Joe
Kishimoto, Naotaka
Ibaragi, Soichiro
Cardona, Juan J
Chaiyamoon, Arada
Hur, Mi-Sun
Nakamura, Yoshiaki
Kusukawa, Jingo
Tubbs, R. Shane
Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title_full Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title_fullStr Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title_full_unstemmed Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title_short Anatomical Study of the Communication Between the Mental Nerve and Marginal Mandibular Branch of the Facial Nerve
title_sort anatomical study of the communication between the mental nerve and marginal mandibular branch of the facial nerve
topic Anatomy
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922440/
https://www.ncbi.nlm.nih.gov/pubmed/36788887
http://dx.doi.org/10.7759/cureus.33733
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