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An unusual anatomical variation of the inferior alveolar nerve

Anatomy & Cell Biology 2020년 53권 4호 p.519 ~ 521
Maekawa Shogo, Nagata Mizuki, Matsushita Yuki, Tubbs R. Shane, Iwanaga Joe,
소속 상세정보
 ( Maekawa Shogo ) - University of Michigan School of Dentistry Department of Periodontics and Oral Medicine
 ( Nagata Mizuki ) - University of Michigan School of Dentistry Department of Orthodontics and Pediatric Dentistry
 ( Matsushita Yuki ) - University of Michigan School of Dentistry Department of Orthodontics and Pediatric Dentistry
 ( Tubbs R. Shane ) - Tulane University School of Medicine Department of Neurosurgery
 ( Iwanaga Joe ) - Tulane University School of Medicine Department of Neurosurgery

Abstract


A number of studies have previously shown variations of inferior alveolar, however, only a few reports focused on nearby the foramen ovale. In a formalin fixed cadaver, we identified three minor branches (anterior, middle, and posterior branches) arising from the main trunk of the mandibular nerve adjacent to the foramen ovale, passing lateral to the maxillary artery (MA), and joining the inferior alveolar nerve. The diameter of the branches was 0.68 mm, 1.43 mm, and 0.40 mm, respectively. The branches traveled inside the lateral pterygoid muscle (LPM) or between the LPM and tensor/levator veli palatini. Moreover, all of the branches were superficial to MA. Knowledge of such a variation might be helpful to dentists during, for example, anesthetic blockade and various oral surgeries.

키워드

Cadaver; Clinical anatomy; Inferior alveolar nerve; Lingual nerve; Mandibular nerve

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