Maekawa Shogo, Nagata Mizuki, Matsushita Yuki, Tubbs R Shane, Iwanaga Joe
Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.
Biointerfaces Institute, North Campus Research Complex, University of Michigan, Ann Arbor, MI, USA.
Anat Cell Biol. 2020 Dec 31;53(4):519-521. doi: 10.5115/acb.20.145.
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.
此前已有多项研究表明下牙槽存在变异，然而，仅有少数报告关注卵圆孔附近的情况。在一具福尔马林固定的尸体中，我们识别出三条小分支（前支、中支和后支），它们发自紧邻卵圆孔的下颌神经主干，经上颌动脉（MA）外侧走行，然后汇入下牙槽神经。这些分支的直径分别为0.68毫米、1.43毫米和0.40毫米。这些分支走行于翼外肌（LPM）内或LPM与腭帆张肌/腭帆提肌之间。此外，所有分支均位于MA的浅面。了解这种变异可能有助于牙医进行诸如麻醉阻滞和各类口腔手术等操作。
