Zhu Wanyu, Shi Xiaoyu, Yang Jie, Nie Jing
Department of Orthodontics, the First Affiliated Hospital of Xinjiang Medical University, School and Hospital of Stomatology, Xinjiang Medical University. Urumqi 830054, Xinjiang Uygur Autonomous Region, China. E-mail:
Shanghai Kou Qiang Yi Xue. 2025 Apr;34(2):171-176.
The aim of this study was to evaluate the impact of the nasopalatine canal(NPC) shape and its morphometric characteristics on expected teeth movement by assessing the distance to maxillary central incisors (MCIs) according to NPC type.
A total of 200 patients with CBCT imaging data meeting the inclusion criteria were selected. The nasopharyngeal canal in the sagittal plane was classified. The following parameters were obtained: incisor foramen diameter, nasopalatine canal length, anterio-posterior diameter of incisor foramen (A-P IF), anterio-posterior diameter of Stenson foramen (A-P NF), nasopalatine tube 1/2 length diameter(M-L IF), and the distance between NPC and MCIs. The data were analyzed with SPSS 26.0 software package.
Diameter of incisor hole（P=0.045）, A-P IF（P=0.001）, M-L IF（P＜0.001）, A-P NF（P＜0.001） had significant difference. In cylindrical-shaped NPC, a significant correlation was observed for NPC length, while in funnel-shaped NPC, a significant correlation was observed for A-P IF and NPC length. In hourglass-shaped NPC, a significant correlation was observed for A-P IF, A-P NF, and NPC length.
Each NPC shape showed specific impacts on the relationship between NPC diameters at different sections and distances to MCIs.
本研究旨在通过根据鼻腭管（NPC）类型评估到上颌中切牙（MCI）的距离，来评价鼻腭管形状及其形态学特征对预期牙齿移动的影响。
共选择200例符合纳入标准的CBCT影像数据患者。对矢状面的鼻咽管进行分类。获取以下参数：切牙孔直径、鼻腭管长度、切牙孔前后径（A-P IF）、斯滕森孔前后径（A-P NF）、鼻腭管1/2长度直径（M-L IF）以及NPC与MCI之间的距离。使用SPSS 26.0软件包对数据进行分析。
切牙孔直径（P = 0.045）、A-P IF（P = 0.001）、M-L IF（P＜0.001）、A-P NF（P＜0.001）有显著差异。在圆柱形NPC中，观察到NPC长度有显著相关性，而在漏斗形NPC中，观察到A-P IF和NPC长度有显著相关性。在沙漏形NPC中，观察到A-P IF、A-P NF和NPC长度有显著相关性。
每种NPC形状对不同截面的NPC直径与到MCI的距离之间的关系均显示出特定影响。
