Choi Dong-Jin, Kim Kee-Deog, Jung Bock-Young
Department of Advanced General Dentistry, Yonsei University, College of Dentistry, Seoul, Korea.
J Oral Implantol. 2019 Dec;45(6):474-482. doi: 10.1563/aaid-joi-D-19-00046. Epub 2019 Sep 19.
Cone-beam computerized tomography (CBCT) can show an uncommon mandibular incisive canal that cannot be detected by panoramic radiography, which is used preoperatively to form the initial plan of the size and length of an implant fixture for surgical placement in the mandibular interforaminal area. Determination of the position and anatomical configuration of the mandibular incisive canal is challenging. The purpose of this case report is to discuss anatomical variations in the mandibular incisive canal and the mental canal by reviewing previous studies. Furthermore, we propose that the anterior loop length of the mental canal near the mental foramen, as well as the diameter of the mandibular incisive canal, should be verified by CBCT prior to performing implant surgery in the anterior mandibular area to prevent possible nerve damage.
锥形束计算机断层扫描（CBCT）能够显示全景X线片无法检测到的罕见下颌切牙管，全景X线片术前用于制定在下颌孔间区植入种植体固定装置的大小和长度的初步计划。确定下颌切牙管的位置和解剖结构具有挑战性。本病例报告的目的是通过回顾以往研究来探讨下颌切牙管和颏管的解剖变异。此外，我们建议，在进行下颌前部区域的种植手术前，应通过CBCT来确定颏孔附近颏管的前襻长度以及下颌切牙管的直径，以防止可能的神经损伤。
