Root Canal Systems in Mandibular First Premolars with C-shaped Root Configurations. Part I: Microcomputed Tomography Mapping of the Radicular Groove and Associated Root Canal Cross-sections

冠状面 根管 沟槽(工程) 顶点(几何体) 牙科 解剖 材料科学 生物 医学 冶金
作者
Bing Fan,Jun Yang,James L. Gutmann,Mingwen Fan
出处
期刊:Journal of Endodontics [Elsevier BV]
卷期号:34 (11): 1337-1341 被引量:138
标识
DOI:10.1016/j.joen.2008.08.006
摘要

The purpose of this study was to investigate the morphology of the radicular grooves and root canal cross-sections in mandibular first premolars that exhibit a C-shaped root. Eighty-six mandibular first premolars with C-shaped roots were scanned from the coronal to anatomical apex using μCT80. The location, length, and depth of the radicular grooves were measured. The cross-sectional morphology of root canal systems was evaluated at 11 levels. Results were subject to the Kruskal-Wallis test. Of the 86 C-shaped roots, a total of 93 radicular grooves were noted. Most of the grooves (78.5%) were located on the mesiolingual surface of the root. The C-shaped canal could vary considerably in shape at different levels, and the incidence of two canals at the middle and apical was 21% and 80%, respectively. This study shows that radicular grooves may present relevant morphologic variations in the root canal system when the C-shaped root is present.
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