Beshtawi Khaled R, Qirresh Emad
Department of Dental Sciences, Faculty of Graduate Studies, Arab American University, Palestine.
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Al Quds University, Palestine.
Radiol Case Rep. 2024 Nov 28;20(2):1082-1086. doi: 10.1016/j.radcr.2024.11.009. eCollection 2025 Feb.
The mental foramen (MF) is an important anatomical landmark in the jaw, where the sensory nerve (mental nerve) and blood vessels emerge. To avoid sensory impairment or paresthesia caused by mental nerve damage, the MF must be accurately identified and localized. The literature describes a variety of anatomical variants of the MF, such as changes in its position, emergence profile or the presence of extra foramina. This case report documents a rare case of nonexistent mental foramina on the left side of the jaw, which was detected incidentally using cone-beam computed tomography (CBCT) prior to implant surgery planning.
颏孔（MF）是颌骨中的一个重要解剖标志，感觉神经（颏神经）和血管由此穿出。为避免因颏神经损伤导致感觉障碍或感觉异常，必须准确识别和定位颏孔。文献中描述了颏孔的多种解剖变异，如位置改变、穿出形态变化或额外孔的存在。本病例报告记录了一例罕见的左侧颌骨颏孔缺失病例，该病例在种植手术规划前通过锥形束计算机断层扫描（CBCT）偶然发现。
