Freitas-E-Silva Alessandra, Mármora Belkiss, Barriviera Maurício, Panzarella Francine Kühl, Raitz Ricardo
Division of Oral Radiology, College of Dentistry, Faculdade São Leopoldo Mandic, Campinas, Brasil Department of Oral Radiology, College of Dentistry, Catholic University, Brasilía, Brasil.
Division of Oral Radiology, College of Dentistry, Faculdade São Leopoldo Mandic, Campinas, Brasil.
J Contemp Dent Pract. 2019 May 1;20(5):552-556.
To evaluate the performance of three cone beam computed tomography (CBCT) machines in detecting vertical root fractures (VRFs) in teeth filled with different sealers.
A total of 80 single-rooted premolars were subjected to instrumentation and restoration with gutta-percha + AH Plus sealer, gutta-percha + sealer 26, gutta-percha + fill canal, and gutta-percha without sealer as the control. Half of the samples were randomly subjected to root fracture and all the teeth were scanned by i-CAT (Imaging Sciences International, Hatfield, USA), PreXion (PreXion Inc., San Mateo, USA), and OrthoPhos XG (Sirona Dental System, Bensheim, Germany). Three examiners analyzed the images for the presence of fractures.
The highest accuracy was obtained with the PreXion device, with Az = 0.85, while the i-CAT device provided higher sensitivity (0.93). The specificity values observed ranged between 0.75 and 0.70. Chi-squared tests ( > 0.05) demonstrated that the sealers did not exert a significant influence on the diagnosis of VRF.
It may be concluded that endodontic sealers do not influence the detection of VRF. The PreXion device was the most accurate, having the highest specificity value.
Radiopaque materials might affect the diagnosis of VRFs because they can simulate fracture lines, leading to false-positive results. Moreover, CBCT machines present different specificities that could exert some influence on that.
评估三台锥形束计算机断层扫描（CBCT）设备在检测充填不同封闭剂的牙齿垂直根折（VRF）方面的性能。
选取80颗单根前磨牙进行根管预备和充填，分别使用牙胶尖+AH Plus封闭剂、牙胶尖+封闭剂26、牙胶尖+根管充填剂，以及不使用封闭剂的牙胶尖作为对照。将一半样本随机进行根折处理，所有牙齿均由i-CAT（美国哈特菲尔德市影像科学国际公司）、PreXion（美国圣马特奥市PreXion公司）和OrthoPhos XG（德国本斯海姆市西诺德牙科系统公司）进行扫描。三名检查者分析图像以确定是否存在根折。
PreXion设备的准确性最高，Az = 0.85，而i-CAT设备的敏感性更高（0.93）。观察到的特异性值在0.75至0.70之间。卡方检验（>0.05）表明封闭剂对VRF的诊断没有显著影响。
可以得出结论，根管封闭剂不会影响VRF的检测。PreXion设备最准确，具有最高的特异性值。
不透射线材料可能会影响VRF的诊断，因为它们可以模拟骨折线，导致假阳性结果。此外，CBCT设备具有不同的特异性，可能会对此产生一些影响。
