The retromolar canal (foramen retromolare). Overview and case report

von Arx, Thomas; Bornstein, Michael M; Werder, Peter; Bosshardt, Dieter (2011). The retromolar canal (foramen retromolare). Overview and case report. Schweizerische Monatsschrift für Zahnmedizin, 121(9), pp. 821-34. Bern: Schweizerische Zahnärzte-Gesellschaft

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A 19-year old female patient was referred for removal of her wisdom teeth. The panoramic radiograph showed bilateral retromolar canals in the mandible. Since the retromolar canal is neglected in anatomical textbooks and is rarely documented in scientific publications, the case prompted us to perform further diagnostic examinations with informed consent by the patient. A limited cone beam computed tomography was made and, during the surgical removal of the patient's lower right wisdom tooth, a biopsy of the soft tissue bundle emerging from the retromolar foramen was taken. In accordance with the literature, the histology revealed myelinated nerve fibers, small arteries and venules. The limited data available in the literature about the retromolar canal report that this bony canal may convey an aberrant buccal nerve. In addition, sensory nerve fibers entering the retromolar canal from above and branching to the mandibular molars may evade a block anesthesia at the mandibular foramen. These rare anatomic features may explain why the elements of the retromolar canal account for failures of mandibular block anesthesia or postsurgical sensitivity changes in the supply area of the buccal nerve.

Item Type:

Journal Article (Further Contribution)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Oral Surgery and Stomatology

UniBE Contributor:

von Arx, Thomas; Bornstein, Michael; Werder, Peter and Bosshardt, Dieter

ISSN:

0256-2855

Publisher:

Schweizerische Zahnärzte-Gesellschaft

Language:

German

Submitter:

Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:16

Last Modified:

30 Sep 2019 09:49

PubMed ID:

21987358

BORIS DOI:

10.7892/boris.4440

URI:

https://boris.unibe.ch/id/eprint/4440 (FactScience: 208649)

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