Sisli Selen Nihal, Yılmaz Büşra, Özpolat Zeynep, Gülşahı Kamran
Department of Endodontics, Faculty of Dentistry, Baskent University, Ankara, Turkey.
Department of Dentomaxillofacial Radiology, Baskent University, Ankara, Turkey.
Aust Endod J. 2021 Dec;47(3):401-407. doi: 10.1111/aej.12486. Epub 2021 Feb 6.
This study aimed to compare the three index systems designed for cone-beam computed tomography (CBCT) in terms of intra- and inter-observer agreement. 117 root-filled teeth with or without periapical radiolucency from 77 of already existing CBCT images were chosen randomly. Two observers evaluated the periapical status of the selected teeth and graded the scores twice using CBCT periapical index (CBCTPAI), endodontic radiolucency index (ERI) and complex periapical index (COPI) part of the periapical and endodontic status scale (PESS), respectively. The researchers' self-agreement kappa values ranged from substantial to almost perfect. A moderate inter-observer agreement was present for the COPI and ERI, whereas a fair agreement was present for CBCTPAI. The researchers' ICC for the inter-observer reliability of CBCTPAI, ERI and COPI was 0.75, 0.77 and 0.80, respectively. COPI had the highest self-agreement and inter-observer reliability. ERI showed the highest intra-observer variation, whereas CBCTPAI showed the highest inter-observer variation.
本研究旨在比较为锥束计算机断层扫描（CBCT）设计的三种指标体系在观察者内和观察者间一致性方面的表现。从已有的77张CBCT图像中随机选取了117颗有或无根尖周透射影的根管充填牙。两名观察者分别使用根尖周和牙髓状态量表（PESS）中的CBCT根尖指数（CBCTPAI）、牙髓透射影指数（ERI）和复合根尖指数（COPI）对所选牙齿的根尖周状态进行评估，并进行两次评分。研究者的自我一致性kappa值范围从“实质性”到“几乎完美”。COPI和ERI的观察者间一致性为中等，而CBCTPAI的观察者间一致性为一般。研究者计算的CBCTPAI、ERI和COPI观察者间可靠性的组内相关系数（ICC）分别为0.75、0.77和0.80。COPI的自我一致性和观察者间可靠性最高。ERI的观察者内差异最大，而CBCTPAI的观察者间差异最大。
