使用锥形束计算机断层扫描对智利和比利时亚人群下颌前磨牙的根管和根形态的研究：一项横断面研究。
Root and canal morphology of mandibular premolars using cone-beam computed tomography in a Chilean and Belgian subpopulation: a cross-sectional study.
机构信息
Department of Endodontics, Universidad de los Andes, Facultad de Odontología. Mons, Álvaro del Portillo 12.455, 7620001, Las Condes, Santiago, Chile.
Department of Imaging and Pathology, University of Leuven, UZ Herestraat 49, Box 7003, 3000, Louvain, Belgium.
出版信息
Oral Radiol. 2018 May;34(2):143-150. doi: 10.1007/s11282-017-0297-5. Epub 2017 Jul 3.
OBJECTIVE
To describe mandibular premolar root and canal morphology and its variability in Chilean and Belgian samples using cone-beam computed tomography.
METHODS
A cross-sectional and descriptive study was conducted. A total of 402 mandibular premolars were examined using cone-beam computed tomography images of Chilean and Belgian patients. Premolars that met the inclusion criteria were studied in relation to the number of roots, number of canals, root canal configuration, presence of C-shaped configuration, tooth length, and root length.
RESULTS
The mandibular first premolar frequently presented with one root (94% Chilean; 100% Belgian), as did the mandibular second premolar (99% Chilean; 98% Belgian). One canal was present in 69% of Chilean, and 83% of Belgian mandibular first premolars, and in 95% of Chilean and 91% of Belgian second premolars. A type I root canal configuration was found in 69% of Chilean and 83% of Belgian first premolars and in 95% of Chilean and 92% of Belgian second premolars.
CONCLUSIONS
The anatomical parameters analyzed in the Chilean and Belgian samples are similar. However, it should be noted that there are anatomical variations in mandibular premolars.
目的
使用锥形束计算机断层扫描（CBCT）描述智利和比利时样本中下颌前磨牙的牙根和根管形态及其变异性。
方法
进行了一项横断面和描述性研究。共检查了来自智利和比利时患者的 402 个下颌前磨牙的 CBCT 图像。对符合纳入标准的前磨牙，研究其牙根数量、根管数量、根管形态、C 型形态的存在、牙长和根长。
结果
下颌第一前磨牙常为单根（智利 94%；比利时 100%），下颌第二前磨牙也是如此（智利 99%；比利时 98%）。智利 69%的下颌第一前磨牙和 83%的比利时第一前磨牙以及智利 95%和比利时 91%的第二前磨牙有 1 个根管。智利 69%和比利时 83%的第一前磨牙以及智利 95%和比利时 92%的第二前磨牙为 I 型根管形态。
结论
在智利和比利时样本中分析的解剖参数相似。然而，应该注意的是，下颌前磨牙存在解剖变异。
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