TY - JOUR AU - Alemam, Sara AU - Abuelsadat, Shaimaa AU - Saber, Shehabeldin AU - Elsewify, Tarek PY - 2020/06/04 Y2 - 2024/03/29 TI - Accuracy, sensitivity and specificity of three imaging modalities in detection of separated intracanal instruments JF - Giornale Italiano di Endodonzia JA - G Ital Endodon VL - 34 IS - 1 SE - Original Articles DO - 10.32067/GIE.2020.34.01.03 UR - https://giornaleitalianoendodonzia.it/gie/article/view/118 SP - AB - <p><strong>Aim: </strong>To compare the accuracy, sensitivity and specificity of CBCT imaging and two dimensional periapical radiography in detection of separated intracanal endodontic instruments with and without root canal filling.</p><p><strong>Methodology:&nbsp; </strong>Eighty (n=80) extracted mandibular molars were randomly divided into four groups (n=20); control, fracture/non-filled, non-fracture/ filled, and fracture/filled.&nbsp; Molars were placed in a mandible for imaging.&nbsp; Conventional 2D radiography using D-speed periapical film (SKYDENT, Slovak Republic), semidirect digital radiographs using Soredex Digora Optime system (DIGORAOptime, Soredex, Finland), and cone beam computed tomography using Gendex-GXDP 800 (GENDEX GXDP-800 Kavo, Germany) were acquired.&nbsp; An artifact reduction algorithm was applied.&nbsp; Images were evaluated by three blinded examiners (two endodontists and one radiologist).&nbsp; Qualitative examination for the presence/absence of separated instrument was performed according to a 5-point rank scale (1, definitely absent; 2, probably absent; 3, uncertainty; 4, probably present; and 5, definitely present).&nbsp; Accuracy, sensitivity and specificity were calculated as well as inter-observer reliability. Statistical analysis was performed and significance level was set at 5%.&nbsp;</p><p><strong>Results: </strong>Non-filled groups showed no significant difference between all three tested imaging modalities.&nbsp; Filled groups showed statistically decreased accuracy and sensitivity of CBCT.&nbsp; Good inter-observer agreement was shown.&nbsp;</p><p><strong>Conclusion:&nbsp; </strong>Conventional 2D radiography is a good tool for detection of intracanal separated instruments in filled canals.</p> ER -