Three-Dimensional Analysis of Root Anatomy and Root Canal Curvature in Mandibular Incisors Using Micro-Computed Tomography with Novel Software

Root canal treatment of mandibular incisor is difficult because of the narrow pulp space and apical curvature. The aim of this study was to measure the anatomical indicators of the mandibular incisors in Koreans using micro-computed tomography (MCT) with novel software (Kappa 2). The MCT-scanned dat...

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Bibliographic Details
Published in:Applied sciences 2020-06, Vol.10 (12), p.4385
Main Authors: Lee, JongKi, Lee, Shin-Hoon, Hong, Jong-Rak, Kum, Kee-Yeon, Oh, Soram, Ghamdi, Adel Saeed Al, Ghamdi, Fawzi Ali Al, Mandorah, Ayman Omar, Jang, Ji-Hyun, Chang, Seok Woo
Format: Article
Language:English
Subjects:
apical curvature
canal width
Computed tomography
Computer programs
CT imaging
Curvature
Dentin
dentin thickness
Dimensional analysis
Endodontics
Incisors
Instrumentation
Mandible
mandibular incisor
Methods
micro-computed tomography
Rank tests
Root canal therapy
Root canals
Roots
Software
Studies
Teeth
Thickness
Three dimensional analysis
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Summary:Root canal treatment of mandibular incisor is difficult because of the narrow pulp space and apical curvature. The aim of this study was to measure the anatomical indicators of the mandibular incisors in Koreans using micro-computed tomography (MCT) with novel software (Kappa 2). The MCT-scanned data from 27 mandibular incisors were reconstructed and analyzed. For each canal, 3-dimensional (3D) surface models were re-sliced at 0.1 mm intervals perpendicular to the central axis of the root canal. Root canal width, dentine thickness, and direction and degree of root canal curvatures were measured automatically on each slice. Measurements were analyzed statistically with Bhapkar test, Friedman test, and Wilcoxon signed rank test. Labial and lingual dentine thicknesses were significantly larger than mesial and distal thicknesses (p < 0.001). The thinnest dentine was mainly located on the mesio-lingual side of the canals in the apical third. The mean narrowest and widest canal width in the apical sixth were 0.22 mm and 0.40 mm, respectively. The canal curvature abruptly increased in the apical 0.5-mm portion. MCT with novel software provided useful anatomical information for root canal instrumentation.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10124385