下颌切牙根管解剖显微CT研究

摘要

Objective:To investigate the anatomy of mandibular incisors using microcomputed tomography(Micro-CT).Methods:62 extracted mandibular incisors were selected from dental clinic and observed by Micro-CT.The anatomy of the teeth was analyzed. Results:83.9% of mandibular incisors had a single canal,72.6% had no accessory canal.The location of the apical foramen varied considerably.The mean distance from the root apex to the major lateral apical foramen was (0.613 ±0.298)mm.Of the canals the bucco-lingual diameter were greater than the mesio-distal diameters and the root bucco-lingual canal tapers were greater than the me-sio-distal.Conclusion:The morphology data of mandibular incisors were obtained using Micro-CT.%目的：采用高分辨率的显微CT观察离体下颌切牙根管解剖结构。方法：收集62颗离体下颌切牙，使用显微CT扫描及三维重建获取每颗牙的解剖数据。结果：83．9％下颌切牙为单根管，72．6％无侧副根管，根尖孔位于旁侧者占56．5％，侧方根尖孔至解剖根尖的距离为（0．613±0．298）mm，下颌切牙根管颊舌向直径及锥度大于近远中向。结论：利用显微CT获得了下颌切牙根管复杂解剖结构的解剖数据。