Department of Operative Dentistry and Endodontics, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy at Ho Chi Minh City, 652 Nguyen Trai Street, Ward 11, District 5, Ho Chi Minh City, Vietnam.
BMC Oral Health. 2021 May 18;21(1):271. doi: 10.1186/s12903-021-01625-w.
The objective of this study is to investigate the accuracy of the 3D Endo software, cone-beam computed tomography (CBCT) software, and the electronic apex locator (EAL) in endodontic length determination.
302 root canals in 111 human extracted molars were chosen. Access cavity was performed, and root canal lengths were measured with a digital caliper for actual length (AL) and EAL for electronic length. Teeth were then scanned using CBCT device at voxel size of 0.10 mm. It measured root canal lengths using the CBCT (Romexis Viewer), 3D Endo for proposed length (3D-PL) and correct length (3D-CL). Mean differences between the four methods with the AL were calculated and compared. Fisher's exact test, paired t-test, Bland-Altman plot were used to test the differences among the experimental modalities in working length determination at the significance of 0.05.
The accuracy in the range of ± 0.5 mm of the EAL ProPex II was highest among the experimental modalities, however this method disagreed with the actual length.
The correct working length after adjustment from the semi-automatically length by the 3D Endo software and Romexis Viewer measurements agreed with the AL.
本研究旨在探讨 3D Endo 软件、锥形束 CT（CBCT）软件和电子根尖定位仪（EAL）在根管长度测量中的准确性。
选择 111 个人类磨牙的 302 个根管。制备开髓口，使用数字卡尺测量实际长度（AL）和 EAL 的电子长度。然后使用 CBCT 设备以 0.10 毫米的体素大小扫描牙齿。使用 CBCT（Romexis Viewer）、3D Endo 提出的长度（3D-PL）和正确长度（3D-CL）测量根管长度。计算并比较这四种方法与 AL 的平均差异。Fisher 确切检验、配对 t 检验、Bland-Altman 图用于检验工作长度测量中各实验方法之间的差异，显著性水平为 0.05。
在 EAL ProPex II 的 ±0.5 毫米范围内，其准确性在实验方法中最高，但该方法与实际长度不符。
3D Endo 软件和 Romexis Viewer 测量的半自动长度调整后的正确工作长度与 AL 相符。
