Tayman M Ayşe, Kamburoğlu Kıvanç, Öztürk Ebru, Küçük Özlem
Department of Periodontology, Faculty of Dentistry, Ankara Yıldırım Beyazıt University, Ankara, Turkey.
Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey.
Aust Endod J. 2020 Dec;46(3):365-373. doi: 10.1111/aej.12416. Epub 2020 Jul 12.
Our aim was to measure PDL space width using periapical radiography, CBCT and micro-CT. Dry human mandibular bones (n = 36) consisting of 59 molar and 36 premolar teeth were used. Four image sets were obtained as follows: (i) photostimulable phosphor plate (PSP), periapical radiography, (ii) CBCT 0.075 mm voxel size, (iii) CBCT 0.2 mm voxel size and (iv) micro-CT 0.06 mm voxel size. Micro-CT images were considered as the gold standard. Four observers measured the PDL space widths twice. Intra- and interclass correlation coefficients (ICC) were calculated. Spearman's rho correlation was assessed. PDL space widths ranged between 0.16 and 0.28 mm. There was good reliability within and between observers (P < 0.01). There was no significant relationship between micro-CT and periapical imaging. (P > 0.05). Best observer performance was obtained from CBCT 0.075 mm voxel size images followed by CBCT 0.2 mm voxel size images.
我们的目的是使用根尖片、锥形束计算机断层扫描（CBCT）和显微计算机断层扫描（micro-CT）测量牙周膜间隙宽度。使用了包含59颗磨牙和36颗前磨牙的干燥人下颌骨（n = 36）。获得了四组图像，如下所示：（i）光激励荧光板（PSP）根尖片，（ii）体素尺寸为0.075 mm的CBCT，（iii）体素尺寸为0.2 mm的CBCT，以及（iv）体素尺寸为0.06 mm的micro-CT。将micro-CT图像视为金标准。四名观察者对牙周膜间隙宽度进行了两次测量。计算了组内和组间相关系数（ICC）。评估了斯皮尔曼等级相关。牙周膜间隙宽度在0.16至0.28 mm之间。观察者内部和观察者之间具有良好的可靠性（P < 0.01）。micro-CT与根尖片成像之间无显著关系（P > 0.05）。从体素尺寸为0.075 mm的CBCT图像获得最佳观察者表现，其次是体素尺寸为0.2 mm的CBCT图像。
