Micro-Computed Tomography Assessment of Apical Accessory Canal Morphologies
Micro-Computed Tomography Assessment of Apical Accessory Canal Morphologies
复制标题
心尖副管形态的微计算机断层扫描评估
DOI：
10.1016/j.joen.2016.02.006
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发表时间：
2016-05-01
影响因子：
4.2
通讯作者：
Sun, Qing
中科院分区：
文献类型：
--
作者：
Xu, Ting;Tay, Franklin R.;Sun, Qing
简介：应用微型CT技术，采用中心线拟合算法，研究了副根管的形态学特征。方法：93个3毫米长的根尖段与通畅的AC进行扫描的微型计算机断层扫描在2.5 μ m的扫描分辨率。在自动分割后，重建的侧管的中心线，和AC的直径，长度，形状和波动进行了分析沿着中心线。结果如下：在178个未阻塞的前房中，中位直径为67.0 μ m，平均长度为786.6 μ m，主要形状为椭圆形，波形为曲折而不是直的。结论：AC之间的直径、长度、形状和起伏可能不同，特别是从牙髓间隙到外根表面，这可能使AC的清创术复杂化。
Introduction: The morphologic features of accessory canals (ACs) were investigated by using micro computed tomography technique with a centerline fitting algorithm. Methods: Ninety-three 3-mm-long apical root segments with unobstructed ACs were scanned by micro computed tomography at 2.5-mu m scanning resolution. After automatic segmentation, a centerline of the reconstructed lateral canal was developed, and the diameter, length, shape, and undulation of ACs were analyzed along the centerline. Results: Of 178 unobstructed ACs identified, the median diameter was 67.0 mu m, the average length was 786.6 mu m, the predominant shape was oval, and the undulation was tortuous rather than straight. Conclusions: The diameter, length, shape, and undulation may vary among ACs in particular from the pulpal space to the external root surface, which may complicate the debridement of the ACs.