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Case report
peer-reviewed

First Report of Tripled Retromolar Foramina



Abstract

The retromolar foramen (RMF) is the bony entrance of the retromolar canal, through which a neurovascular bundle runs. It is essential to locate such anatomic variants in a patient in order to avoid complications in surgery, implant placement, or anesthesia of the area. To our knowledge, there has only been one case report of supernumerary RMF, which reported one bilateral doubled retromolar foramina and one doubled left RMF. We present an extremely rare case in which a right triple RMF was observed on cone beam computed tomography in a cadaver. Diameters of the RMF were 0.8 mm, 1.0 mm and 1.1 mm, respectively. Distances from the distal edge of the third molar were measured as 4.0 mm, 3.6 mm, and 0.5 mm, respectively. RMF was not found on the left side of the mandible.



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Case report
peer-reviewed

First Report of Tripled Retromolar Foramina


Author Information

Puhan He Corresponding Author

Harvard School of Dental Medicine, Harvard University

Joe Iwanaga

Seattle Science Foundation

Mindy K. Truong

Harvard School of Dental Medicine, Harvard University

Nimer Adeeb

Neurosurgery, Louisiana State University for medical sciences, shreveport

R. Shane Tubbs

Neurosurgery, Seattle Science Foundation

Koh-ichi Yamaki

Department of Anatomy, Kurume University School of Medicine


Ethics Statement and Conflict of Interest Disclosures

Human subjects: Consent was obtained by all participants in this study. Informed consent was obtained from patient for this study, and the protocol of the study did not require approval by ethics committees of our institutions. Conflicts of interest: The authors have declared that no conflicts of interest exist.

Acknowledgements

The authors wish to thank all those who donate their bodies and tissues for the advancement of education and research.


Case report
peer-reviewed

First Report of Tripled Retromolar Foramina


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Case report
peer-reviewed

First Report of Tripled Retromolar Foramina

  • Author Information
    Puhan He Corresponding Author

    Harvard School of Dental Medicine, Harvard University

    Joe Iwanaga

    Seattle Science Foundation

    Mindy K. Truong

    Harvard School of Dental Medicine, Harvard University

    Nimer Adeeb

    Neurosurgery, Louisiana State University for medical sciences, shreveport

    R. Shane Tubbs

    Neurosurgery, Seattle Science Foundation

    Koh-ichi Yamaki

    Department of Anatomy, Kurume University School of Medicine


    Ethics Statement and Conflict of Interest Disclosures

    Human subjects: Consent was obtained by all participants in this study. Informed consent was obtained from patient for this study, and the protocol of the study did not require approval by ethics committees of our institutions. Conflicts of interest: The authors have declared that no conflicts of interest exist.

    Acknowledgements

    The authors wish to thank all those who donate their bodies and tissues for the advancement of education and research.


    Article Information

    Published: July 07, 2017

    DOI

    10.7759/cureus.1440

    Cite this article as:

    He P, Iwanaga J, Truong M K, et al. (July 07, 2017) First Report of Tripled Retromolar Foramina. Cureus 9(7): e1440. doi:10.7759/cureus.1440

    Publication history

    Received by Cureus: May 10, 2017
    Peer review began: June 10, 2017
    Peer review concluded: June 14, 2017
    Published: July 07, 2017

    Copyright

    © Copyright 2017
    He et al. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 3.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

    License

    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.

Abstract

The retromolar foramen (RMF) is the bony entrance of the retromolar canal, through which a neurovascular bundle runs. It is essential to locate such anatomic variants in a patient in order to avoid complications in surgery, implant placement, or anesthesia of the area. To our knowledge, there has only been one case report of supernumerary RMF, which reported one bilateral doubled retromolar foramina and one doubled left RMF. We present an extremely rare case in which a right triple RMF was observed on cone beam computed tomography in a cadaver. Diameters of the RMF were 0.8 mm, 1.0 mm and 1.1 mm, respectively. Distances from the distal edge of the third molar were measured as 4.0 mm, 3.6 mm, and 0.5 mm, respectively. RMF was not found on the left side of the mandible.



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Create a free account to continue reading this article.

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Puhan He, Dental Student

Harvard School of Dental Medicine, Harvard University

For correspondence:
puhanhe@gmail.com

Joe Iwanaga, Ph.D., Assistant Professor

Seattle Science Foundation

Mindy K. Truong

Harvard School of Dental Medicine, Harvard University

Nimer Adeeb

Neurosurgery, Louisiana State University for medical sciences, shreveport

R. Shane Tubbs, Ph.D., Professor

Neurosurgery, Seattle Science Foundation

Koh-ichi Yamaki

Department of Anatomy, Kurume University School of Medicine

Puhan He, Dental Student

Harvard School of Dental Medicine, Harvard University

For correspondence:
puhanhe@gmail.com

Joe Iwanaga, Ph.D., Assistant Professor

Seattle Science Foundation

Mindy K. Truong

Harvard School of Dental Medicine, Harvard University

Nimer Adeeb

Neurosurgery, Louisiana State University for medical sciences, shreveport

R. Shane Tubbs, Ph.D., Professor

Neurosurgery, Seattle Science Foundation

Koh-ichi Yamaki

Department of Anatomy, Kurume University School of Medicine