Cone Beam Computed Tomography Imaging of Periodontal Bone Public Deposited

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  • March 20, 2019
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  • Balasundaram, Ashok
    • Affiliation: School of Dentistry, Department of Diagnostic Sciences
Abstract
  • Cone beam computed tomography (CBCT) is a low-dose, low-cost three dimensional imaging modality used for several oral and maxillofacial applications. This project evaluated the accuracy of Cone-Beam CT imaging to assess periodontal alveolar bone. In Phase I, ground truth measurements of periodontal bone were obtained using invitro skull models. 146 sites were selected. Skulls were scanned with a CBCT unit and measurements from CT slices were obtained. In Phase II, the diagnostic performance of the CBCT system was assessed compared to that of a full-mouth radiographic examination (FMX). Measurements were compared to ground truth and Az values were calculated from Receiver Operating Characteristic (ROC) curves. Analysis of Variance and Tukey's post-hoc test were used. The Az-value for CBCT was 0.74 (SE=0.02) and for FMX 0.48 (SE=0.02). The difference was significant (ANOVA: p<0.01). CT images from NewTom Cone-beam CT scanner provided better diagnostic and quantitative information of periodontal bone than full mouth radiographs.
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  • Mol, André
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