TY - JOUR
T1 - Micro-Computed Tomography Assessment of Apical Accessory Canal Morphologies
AU - Xu, Ting
AU - Tay, Franklin R.
AU - Gutmann, James L.
AU - Fan, Bing
AU - Fan, Wei
AU - Huang, Zhuo
AU - Sun, Qing
N1 - Funding Information:
This study was supported by the National Natural Science Foundation of China (grant nos. 81271130 and 81470732 ).
Funding Information:
This study was supported by the gs1 http://dx.doi.org/10.13039/501100001809 National Natural Science Foundation of China gs1 81271130 and gs1 81470732.
Publisher Copyright:
© 2016 American Association of Endodontists.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - 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-μm 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 μm, the average length was 786.6 μm, 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.
AB - 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-μm 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 μm, the average length was 786.6 μm, 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.
KW - Accessory canals
KW - micro-CT
KW - morphology
KW - root apices
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U2 - 10.1016/j.joen.2016.02.006
DO - 10.1016/j.joen.2016.02.006
M3 - Article
C2 - 26975416
AN - SCOPUS:84960145461
SN - 0099-2399
VL - 42
SP - 798
EP - 802
JO - Journal of endodontics
JF - Journal of endodontics
IS - 5
ER -