Acurácia de três tomógrafos e um programa de redução de artefatos (e-Vol DX) na detecção de fraturas radiculares verticais
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2019-12-10
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Universidade Federal de Goiás
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Objective: To test the accuracy of three Cone Beam Computed Tomography (CBCT) devices and a CBCT imaging software with artifact reduction filters (e-Vol DX) in the diagnosis of vertical root fractures (VRF) in teeth without filling material, teeth with filling material and teeth with intracanal metallic post. Methods: 45 extracted human monoradicular premolars were divided into three groups according to the clinical condition concerning the root canal filling: 15 without filling material (WF), 15 with gutta-percha (GP) and 15 with intracanal metallic post (MP). The teeth were scanned on three different CT scanners (Kodak 9000® 3D, Orthopantomograph® 300 OP300 and PreXion 3D®) using the maximum resolution available in each device. Every tooth in the sample was artificially fractured and re-scanned under the same pattern. Two examiners evaluated the images using the InVivo (Anatomage) software and the e-Vol DX (CDT) software. The images were evaluated regarding the presence or absence of fracture using a five-point scale. In order to assess the method error, 30% of the images were re-evaluated after a minimum intermission of 15 days from the first evaluation. The intra and inter examiner concordances were obtained using the Kappa coefficient. Diagnostic tests determined the sensitivity, specificity and accuracy of the images of each CT scanner using both software. Results: The PreXion 3D® CT scanner was the most accurate in all evaluated groups (InVivo: 0.96; e-Vol DX: 0.92). In the WF and MP groups, the PreXion 3D® and OP300 CT scanners demonstrated equivalent accuracy when evaluated in InVivo software (WF: p = 0.2090; MP: p = 0.0950). There was no statistical difference between images analyzed with e-Vol DX (p = 0.8880). Conclusions: The PreXion 3D® CT scanner presents the best accuracy compared to the other CT scanners in both software. For the WF group, there is no difference between the PreXion 3D® and OP300 CT scanners regardless of the software used to evaluate the images. The Kodak 9000® 3D CT scanner presents lower accuracy in the tested groups. The e-Vol DX software does not contribute to a greater accuracy in the diagnosis of VRF.
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CAETANO, Aline de Paula Ferreira. Acurácia de três tomógrafos e um programa de redução de artefatos (e-Vol DX) na detecção de fraturas radiculares verticais. 2019. 59 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2019.