Akademik Veri Yönetim Sistemi
2017 IADR/AADR/CADR General Session (San Francisco, California), California, Amerika Birleşik Devletleri, 22 - 25 Mart 2017, ss.1-2, (Özet Bildiri)
Radiographic Detection of Implant Related Inferior AlveolarCanal Injuries
Objectives: The aim of this in vitro study is to evaluate the diagnostic accuracies ofPanoramic radiography (PR) and Cone Beam Computed Tomography (CBCT) forsimulated implant related nerve injuries in sheep mandible.
Methods: 50 fresh sheep hemimandibles were used in this study. Standard “trap doorwindows” were created in order to reveal the inferior alveolar canal. In one group, thepilot drill was inserted until there was 1 mm distance left to the superior border of thecanal and other drills with gradually increasing diameters were used to prepare theimplant bed. The other group received no implants but the pilot drill penetrated to themandibular canal. The pilot drill entered 1 mm below the superior border of themandibular canal in the group which had also implants. Implant only depressed thebony canal of the inferior nerve in one group. Control group had no treatment. All of thesamples with attached bone windows were mounted on a custom designedradiographic phantom. They all were exposed to PR and CBCT, respectively. Imageswere analyzed by three observers. Inter- and intra-observer agreements werecalculated with weighted Kappa statistics. Areas under the curve (AUC) values were usedto compare diagnostic accuracy of the radiographs in each model.
Results: AUCs for the simulated groups in which drill insertion without penetrating intothe canal, drill penetration without implant placement and compression to themandibular canal were signifi cantly higher in CBCT (p<0.05 for each) when compared toPR.
Conclusions: Within the limits of this study, it can be suggested that CBCT is moreaccurate than PR in the detection of implant related inferior alveolar canal injuries.