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Anat Cell Biol

Published online July 30, 2020


Copyright © Korean Association of ANATOMISTS.

An anatomical study on locations of the mandibular foramen and the accessory mandibular foramen in the mandible and their clinical implication in a Thai population

Siriwat Thunyacharoen1 , Solos Lymkhanakhom1 , Pranpriya Chantakhat1 , Supakorn Suwanin1 , Supanat Sawanprom1 , Anak Iamaroon2 , Apirum Janhom2 , Pasuk Mahakkanukrauh3,4

1Faculty of Medicine, Chiang Mai University, Chiang Mai, 2Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 3Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, 4Excellence in Osteology Research and Training Center (ORTC), Chiang Mai University, Chiang Mai, Thailand

Correspondence to:Pasuk Mahakkanukrauh
Department of Anatomy & Excellence in Osteology Research and Training Center (ORTC), Chiang Mai University, Chiang Mai 50200, Thailand
E-mail: pasuk034@gmail.com

Received: April 3, 2020; Revised: May 21, 2020; Accepted: May 24, 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mandibular foramen (MF) is a structure that inferior alveolar nerve and artery pass through itself which is found on the mandible. The objective of this research aims to locate MF among the Thai population including other MF characteristics. The sampling is conducted in the Thai population of the total number of 220 samples from the Forensic Osteology Research Center, Faculty of Medicine, Chiang Mai University. The MF anteroposterior and superoinferior localizations are similar in both sex which at Q3 of right anteroposterior, Q2 of left anteroposterior and Q2 of left and right superoinferior axis. Otherwise, the prevalence of accessory MF has in 68 samples which are 30.89%. The prevalence of unilateral single accessory MF is 20.45%, bilateral single accessory MF is 6.36%, unilateral double accessory MF is 2.27% and bilateral double accessory MF is 0.45%. This present research results that the Thai population has a difference in MF location while comparing to other populations. Moreover, Thai MF and accessory MF location and localization will be helpful to clinical implications.

Keywords: Mandibular foramen, Inferior alveolar nerve block

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