Kamburoğlu Kivanç, Murat Sema, Yüksel Selcen Pehlivan, Cebeci Ali Riza Ilker, Horasan Sinan
Department of Oral Diagnosis and Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Feb;109(2):e74-81. doi: 10.1016/j.tripleo.2009.09.005.
This study aimed to compare 2 cone-beam CT units [NewTom 3G (small FOV), Iluma (ultra/low resolution)] and an intraoral CCD sensor in the detection of vertical root fracture (VRF).
The VRFs were created in 30 teeth, and 30 intact teeth served as control samples. All images were evaluated twice by 4 observers. Kappa coefficients were calculated to assess intra- and interobserver agreement, and t tests were used to compare Az values (alpha = 0.05).
Both intra- and interobserver agreement values were higher for the ultra-resolution Iluma and NewTom 3G images compared with the low-resolution Iluma and intraoral CCD images. Az values for the ultra-resolution Iluma and NewTom 3G images were also higher than for the Iluma low-resolution and intraoral CCD images. No significant differences (P > .05) in diagnostic accuracy were found between the Iluma ultra-resolution and NewTom 3G images, with the exception of the second reading of observer 2 (P = .036), and no significant differences (P > .05) were found between the intraoral digital and low-resolution Iluma images.
Both ultra-resolution Iluma and NewTom 3G images performed better than low-resolution Iluma and intraoral CCD images in the detection of VRF.
本研究旨在比较2台锥形束CT设备[NewTom 3G（小视野）、Iluma（超高/低分辨率）]和1个口腔内电荷耦合器件（CCD）传感器在检测垂直根折（VRF）方面的性能。
在30颗牙齿上制造垂直根折，30颗完整牙齿作为对照样本。所有图像由4名观察者评估两次。计算Kappa系数以评估观察者内和观察者间的一致性，并使用t检验比较Az值（α = 0.05）。
与低分辨率Iluma和口腔内CCD图像相比，超高分辨率Iluma和NewTom 3G图像的观察者内和观察者间一致性值更高。超高分辨率Iluma和NewTom 3G图像的Az值也高于低分辨率Iluma和口腔内CCD图像。除观察者2的第二次读数外（P = 0.036），Iluma超高分辨率和NewTom 3G图像之间在诊断准确性上未发现显著差异（P > 0.05），口腔内数字图像和低分辨率Iluma图像之间也未发现显著差异（P > 0.05）。
在检测垂直根折方面，超高分辨率Iluma和NewTom 3G图像的表现均优于低分辨率Iluma和口腔内CCD图像。
