Evaluation of Diagnostic Visibility in CBCT Images with Prosthodontic Crown-Induced Artifacts: Retrospective CBCT
V Amalorpavam1, V D Ponjayanthi2, S Ramesh Raja1
1Department of prosthodontics, Rajas Dental College and Hospital, Tirunelveli, Tamil Nadu, India.
Background:
CBCT is widely used in dental diagnostics, but image artifacts from prosthodontic crowns can reduce diagnostic clarity. This study evaluated the effect of crown materials-metal, PFM, and zirconia-on CBCT visibility.
Materials And Methods:
CBCT scans of patients with different crowns were retrospectively analyzed. Key landmarks such as the periapical area, lamina dura, and bone were assessed using the diagnostic visibility score (DVS, 0-4). Two observers independently evaluated the scans.
Results:
Metal crowns produced the most artifacts, followed by PFM crowns. Zirconia crowns caused minimal distortion, preserving visibility. Differences among groups were statistically significant with high interobserver agreement.
Conclusion:
Zirconia crowns provide better diagnostic visibility in CBCT scans. Crown material selection plays a vital role in image interpretation accuracy.
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