Kong Nana, Yuan Hua, Miao Fen, Xie Lizhe, Zhu Longbiao, Chen Ning
Institute of Stomatology, Nanjing Medical University & Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China.
Institute of Stomatology, Nanjing Medical University & Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China. Email:
Zhonghua Kou Qiang Yi Xue Za Zhi. 2015 Feb;50(2):69-73.
To investigate the mandibular incisive canal (MIC) with cone-beam computed tomography (CBCT).
Fifty adults were selected and CBCT was taken. The CBCT data were reconstructed to evaluate the visibility, shape, diameter, length of the MIC and its relationship with mandible.
MIC could be identified in 100% (100/100) of CBCT with good clarity in 71% (71/100). The diameters (horizontal diameter versus vertical diameter) of MIC became smaller from origin to end (left origin of MIC was 2.17 mm×2.22 mm, left end was 0.82 mm×0.92 mm; right origin of MIC was 2.14 mm×2.08 mm, right end was 0.87 mm×0.86 mm). The left and right mean length of MIC was 17.84 mm and 17.73 mm respectively. In bucca-lingual direction, MIC was close to buccal cortical border, and in vertical direction, MIC was close to lower margin of mandible. The distance from MIC to apex of root was shortest in canine.
CBCT can identify MIC with high visibility and prominent clarity. In the interforaminal region of mandible, MIC was close to buccal and lower margin of mandible.
采用锥形束计算机断层扫描（CBCT）研究下颌切牙管（MIC）。
选取50名成年人并进行CBCT扫描。对CBCT数据进行重建，以评估MIC的可视性、形态、直径、长度及其与下颌骨的关系。
100%（100/100）的CBCT图像中均可识别出MIC，其中71%（71/100）的图像清晰度良好。MIC的直径（水平直径与垂直直径）从起始端到末端逐渐变小（MIC左侧起始端为2.17 mm×2.22 mm，左侧末端为0.82 mm×0.92 mm；MIC右侧起始端为2.14 mm×2.08 mm，右侧末端为0.87 mm×0.86 mm）。MIC左右两侧的平均长度分别为17.84 mm和17.73 mm。在颊舌方向上，MIC靠近颊侧皮质边界，在垂直方向上，MIC靠近下颌骨下缘。MIC到牙根尖的距离在尖牙处最短。
CBCT能够以高可视性和显著清晰度识别MIC。在下颌骨孔间区域，MIC靠近下颌骨颊侧和下缘。
