Receiver operating characteristic (ROC) curves were generated to assess the ability for predicting crack depth in the differential diagnosis using pre-CBCT and contrast-enhanced CBCT. Bland–Altman plot and the intraclass correlation coefficient (ICC) were used to analyze the consistency of the crack depths between the pre-CBCT and contrast-enhanced CBCT, as well as the ICC between the contrast-enhanced CBCT and micro-CT. According to the K-means clusters, crack depths measured by micro-CT were changed into categorical variables. The sensitivities of pre-CBCT and contrast-enhanced CBCT for the diagnosis of cracked teeth were calculated. Contrast-enhanced CBCT was then performed by infiltrating the crack with ioversol under vacuum conditions. Pre-experimental CBCT (pre-CBCT), and micro-computed tomography (micro-CT) were first performed for all cracked teeth (n = 31). We developed an in vitro artificial simulation model of cracked teeth. ![]() The aim of this study was to develop a new technique based on contrast-enhanced cone beam computed tomography (CBCT) to improve the accuracy of crack depth evaluation in vitro. However, techniques to reliably determine the extension depths of cracks in teeth before treatment are lacking. ![]() Cracked teeth may cause various clinical symptoms depending on the extension depth of the crack and the subsequent bacterial infections.
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