Caughey Jennifer A, Do Quang, Shen Daniel, Ohyama Hiroe, He Puhan, Tubbs R Shane, Iwanaga Joe
Department of Oral and Maxillofacial Surgery, University of Pennsylvania, Philadelphia, PA, USA.
Harvard School of Dental Medicine, Harvard University, Boston, MA, USA.
Anat Cell Biol. 2021 Dec 31;54(4):409-416. doi: 10.5115/acb.21.113.
The incisive branch of the inferior alveolar nerve is a vital anatomical structure within the anterior mandible that has not been thoroughly defined and outlined in reports in the literature until recent years. Advances in radiological imaging, particularly the widespread use of cone-beam computed tomography has allowed for accurate visualization of the mandibular incisive canal (MIC) and its associated incisive branch of the inferior alveolar nerve. Surgical damage to the MIC, which could result in hemorrhage and sensory disturbance, may occur in commonly practiced oral and maxillofacial procedures, such as chin bone harvesting, implant placement, fracture repair and removal of pathologic entities of the anterior mandible. Knowledge of both the presence, dimensions and location of the incisive branch is a vital component to pre and peri-operative planning of oral and maxillofacial surgeries performed within the mandible, particularly within the interforaminal zone. In this article, the terminology, anatomy, imaging, surgical consideration, and pathology of the incisive branch will be discussed.
下牙槽神经切牙支是下颌前部重要的解剖结构，直到近年来才在文献报道中得到充分定义和描述。放射影像学的进展，尤其是锥形束计算机断层扫描的广泛应用，使得下颌切牙管（MIC）及其相关的下牙槽神经切牙支能够被精确可视化。在常见的口腔颌面外科手术中，如下颌骨取骨、种植体植入、骨折修复以及下颌前部病变实体切除等，可能会发生对MIC的手术损伤，这可能导致出血和感觉障碍。了解切牙支的存在、尺寸和位置是下颌骨内，特别是孔间区进行口腔颌面外科手术术前和术中规划的重要组成部分。在本文中，将讨论切牙支的术语、解剖、影像学、手术考量及病理学。
