Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review

The marginal mandibular branch of the facial nerve (MMB) has a significant variation in relation to the lower border of the mandible (LBM). That is why it is important to know its topographical description to prevent damage in submandibular surgical procedures. The objective of this study was to det...

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Autores principales:	Aravena,Pedro Christian, Santibáñez,Rodrigo, Rubilar,Pablo, Espinoza,Christian, Pérez-Rojas,Francisco
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2014
Materias:	Anatomy and histology Facial Nerve Facial Nerve Injuries Surgery Oral Head and Neck Neoplasms Review Literature as Topic
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100052
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spelling	oai:scielo:S0717-950220140001000522015-11-13Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic ReviewAravena,Pedro ChristianSantibáñez,RodrigoRubilar,PabloEspinoza,ChristianPérez-Rojas,Francisco Anatomy and histology Facial Nerve Facial Nerve Injuries Surgery Oral Head and Neck Neoplasms Review Literature as Topic The marginal mandibular branch of the facial nerve (MMB) has a significant variation in relation to the lower border of the mandible (LBM). That is why it is important to know its topographical description to prevent damage in submandibular surgical procedures. The objective of this study was to determine the distance between the MMB and LBM based on descriptive studies carried out on human corpses and surgical patients. A systematic review of literature in MEDLINE, "Science Citation Index Expanded" of Web of Science (ISI) databases and manual search was performed. The articles with number of samples greater than or equal to 10 facial samples and recording of measurements between the MMB and the LBM or Gonion were selected. From the selected articles, the authors registered year of publication, country of origin, number of samples, sample type (fresh, embalmed body/fixed cadavers or surgical patient), distribution percentage of the MMB in relation to LBM, average and maximum distance between MMB and LBM or Gonion. The results were presented in tables with descriptive statistic. Seventeen articles describing measurements of the distance between MMB and the lower border of the mandible carried out in cadavers and patients were selected. In these articles a total of 1,408 samples were dissected. The maximum distance observed was 4.01 cm (mean±SD 1.64±0.92 cm, Min= 0.69; Max= 4.01). Several reports suggest that an incision 2 cm below the lower border of the mandible would be enough to avoid damage of the MMB. However, according to the maximal distances registered, such an incision might involve risk for the MMB. For this reason, we propose that the MMB of facial nerve should be at least 4 cm below the lower border of the mandible.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.32 n.1 20142014-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100052en10.4067/S0717-95022014000100052
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Anatomy and histology Facial Nerve Facial Nerve Injuries Surgery Oral Head and Neck Neoplasms Review Literature as Topic
spellingShingle	Anatomy and histology Facial Nerve Facial Nerve Injuries Surgery Oral Head and Neck Neoplasms Review Literature as Topic Aravena,Pedro Christian Santibáñez,Rodrigo Rubilar,Pablo Espinoza,Christian Pérez-Rojas,Francisco Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
description	The marginal mandibular branch of the facial nerve (MMB) has a significant variation in relation to the lower border of the mandible (LBM). That is why it is important to know its topographical description to prevent damage in submandibular surgical procedures. The objective of this study was to determine the distance between the MMB and LBM based on descriptive studies carried out on human corpses and surgical patients. A systematic review of literature in MEDLINE, "Science Citation Index Expanded" of Web of Science (ISI) databases and manual search was performed. The articles with number of samples greater than or equal to 10 facial samples and recording of measurements between the MMB and the LBM or Gonion were selected. From the selected articles, the authors registered year of publication, country of origin, number of samples, sample type (fresh, embalmed body/fixed cadavers or surgical patient), distribution percentage of the MMB in relation to LBM, average and maximum distance between MMB and LBM or Gonion. The results were presented in tables with descriptive statistic. Seventeen articles describing measurements of the distance between MMB and the lower border of the mandible carried out in cadavers and patients were selected. In these articles a total of 1,408 samples were dissected. The maximum distance observed was 4.01 cm (mean±SD 1.64±0.92 cm, Min= 0.69; Max= 4.01). Several reports suggest that an incision 2 cm below the lower border of the mandible would be enough to avoid damage of the MMB. However, according to the maximal distances registered, such an incision might involve risk for the MMB. For this reason, we propose that the MMB of facial nerve should be at least 4 cm below the lower border of the mandible.
author	Aravena,Pedro Christian Santibáñez,Rodrigo Rubilar,Pablo Espinoza,Christian Pérez-Rojas,Francisco
author_facet	Aravena,Pedro Christian Santibáñez,Rodrigo Rubilar,Pablo Espinoza,Christian Pérez-Rojas,Francisco
author_sort	Aravena,Pedro Christian
title	Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
title_short	Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
title_full	Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
title_fullStr	Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
title_full_unstemmed	Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review
title_sort	anatomic study of the distance between the lower margin of the mandible and the marginal mandibular branch of the facial nerve: a systematic review
publisher	Sociedad Chilena de Anatomía
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100052
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Anatomic Study of the Distance Between the Lower Margin of the Mandible and the Marginal Mandibular Branch of the Facial Nerve: A Systematic Review

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