Acurácia de três tomógrafos e dois softwares no diagnóstico de defeitos peri-implantares do tipo deiscência: estudo in vitro
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2022-03-04
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Universidade Federal de Goiás
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In evaluating of the peri-implantitis, Cone Beam Computed Tomography (CBCT) has the advantage of estimating the bone site in a three-dimensional manner; however, the production of artifacts represents a negative factor against high-density materials. The objective of this work was to evaluate the accuracy of three CT scanners and two software in the identification and measurement of peri-implant dehiscence defects in vitro. For this, 36 bovine rib models were prepared to receive a Morse taper titanium implant Torq® 13 X 4,0 mm (Conexão, Arujá, São Paulo, Brazil). The ribs were divided into three groups: a group without bone defect as a control (n=12), a group with a dehiscence-like defect from 1.0 mm to 2.5 mm (n=12), and a group with a dehiscence-like defect > 2.5 to 4.15 mm (n=12). Rib blocks were submitted to CBCT using three different devices: Carestream 8100 3D (Carestream Health, Rochester, New York, USA), PreXion 3D (PreXion Inc, San Mateo, California, USA), and Orthopantomogram OP300 (Instrumentarium Kavo Kerr, Tuusula, Finland). These images were imported and processed by two software programs: e-Vol DX (CDT Software, Bauru, São Paulo, Brazil) and InVivo (Anatomage, San Jose, California, USA). Two evaluators experienced in identifying bone defects in tomographic images analyzed the presence/absence of a peri-implantitis dehiscence type defect and independently measured the size of the defect using a linear measurement tool using a five-point scale and measured the defect using a linear measurement tool. ROC curve was created to evaluate the accuracy, and the Friedman test was used to analyze the variables between the e-Vol DX and InVivo software. The results demonstrated a 100% accuracy value for defect detection with PreXion and Carestream and 98% for the OP300 across all defect sizes. The area under the curve presented 100% accuracy for InVivo and 99% for the e-Vol DX. Regarding measurement, the software showed a statistically significant difference, following the mean values: reference standard (2.6111), e-Vol DX (1.8542), and InVivo (1.5347). All equipment and software tested showed good accuracy in detecting dehiscence. In the measurement of defects, the e-Vol DX showed better results than the InVivo, but both software underestimated the real measurements.
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FERREIRA, Mário Serra. Acurácia de três tomógrafos e dois softwares no diagnóstico de defeitos peri-implantares do tipo deiscência: estudo in vitro. 2022. 72 f. Tese (Doutorado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2022.