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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, STUDY DESIGN, RESULTS. Meshes: Cone-Beam Computed Tomography, Dental Caries, Dental Materials, Denture Design, Denture, Partial, Fixed, Diagnosis, Differential, Humans, In Vitro Techniques.
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Is it possible to diagnose caries under fixed partial dentures with cone beam computed tomography? Context: The goal of this study was to determine the possibility of detecting/diagnosing caries under fixed partial dentures using cone beam computed tomography. A range of teeth with grade 3 to 6 caries, according to International Caries Detection and Assessment System criteria, were selected. All teeth were prepared, and three different specimens- zirconia full-ceramic, lithium disilicate full-ceramic, and metal-supported ceramic crowns-were built for each tooth. Each specimen underwent scanning by cone beam computed tomography. Opacity values were recorded and evaluated using two-way analysis of variance. The Tukey test was performed for material and slice differences, and the t test for mean gray value differences, between caries and noncaries regions of each material. Significant differences were detected with respect to horizontal location (anterior/posterior), restoration type (crown/bridge), material (zirconia/lithium disilicate/metal), and situation (caries/noncaries) (P<.001). Mean gray values of caries and noncaries regions were found to differ for each material. There were no significant differences with respect to vertical position.
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Cone beam computed tomography can be used as a posttreatment diagnostic technique for detecting caries under high-atomic-number fixed plate dentures. By combining high resolution and accuracy, cone beam computed tomography could provide the means for diagnosing caries without removing fixed plate dentures.