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KMID : 1237720200530040519
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Anatomy & Cell Biology
2020 Volume.53 No. 4 p.519 ~ p.521
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An unusual anatomical variation of the inferior alveolar nerve
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Maekawa Shogo
Nagata Mizuki
Matsushita Yuki
Tubbs R. Shane
Iwanaga Joe
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Abstract
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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.
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KEYWORD
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Cadaver, Clinical anatomy, Inferior alveolar nerve, Lingual nerve, Mandibular nerve
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