Anat Cell Biol
Published online August 20, 2020
Copyright © Korean Association of ANATOMISTS.
1Harvard School of Dental Medicine, Harvard University, Boston, MA, 2Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston MA, 3Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, 4Department of Anatomical Sciences, St. George’s University, St. George’s, Grenada, 5Department of Structural & Cellular Biology, Tulane University School of Medicine, New Orleans, LA, 6Department of Neurosurgery and Ochsner Neuroscience Institute, Ochsner Health System, New Orleans, LA, USA, 7Dental and Oral Medical Center, Kurume University School of Medicine, Kurume, Fukuoka, 8Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan
Correspondence to:Joe Iwanaga
Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA 70112, USA
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.
There are many reported anatomical variations of the mandibular canal. Consequently, there is great variation in the retromolar area, such as the quantity, size, and location of the retromolar foramen (RMF), the bony entrance of the retromolar canal (RMC). These variations allow for different accessory innervations to the mandibular molars and their adjacent buccal tissue because the RMC contains neurovascular bundles. Consideration of these anatomical variations is crucial for avoiding complications in anesthesia, implant placement, and surgery. However, the rarer canal types are often only imaged by computed tomography (CT) or cone beam computed tomography (CBCT). We present a rare case with bilateral RMF and a unilateral trifid mandibular canal in a cadaver.
Keywords: Mandible, Oral surgery, Anatomy, Anatomic variation, Cadaver