Effect of dental restorations materials on the voxel density value of CBCT | ||
| Ain Shams Dental Journal | ||
| Volume 38, Issue 2, June 2025, Pages 718-727 PDF (1.35 M) | ||
| Document Type: Original articles | ||
| DOI: 10.21608/asdj.2025.358072.1836 | ||
| Authors | ||
| Doha Mohamed Hilal* 1; Walaa Hussein Abu El-Ela2; mostafa saad el din saad3 | ||
| 1oral and maxillofacial radiology, dentistry, Ain shams University, Cairo, Egypt | ||
| 2Oral and Maxillofacial Radiology, Faculty of Dentistry, Ain shams university, Cairo, Egypt. | ||
| 3oral radiology department faculty of dentistry Ain shams university | ||
| Abstract | ||
| Aim: To assess the effect of various dental restorations positioned outside the field of view (FOV) on voxel Density Value (VDV) in CBCT scans, specifically examining variations of VDV in low- and high-dose imaging protocols. Materials and methods: An ex-vivo study was conducted using dentate human skull and mandible with missing lower right second premolar. A layer of pink baseplate wax was applied to simulate soft tissues. Different restorations (implants, porcelain-fused-to-metal (PFM) bridges, and zirconium bridges) were placed sequentially in three distinct locations outside the FOV. Standardized CBCT scans for lower right premolar region were acquired using both low-dose (90 kV, 3.2 mA) and high-dose (90 kV, 6.3 mA) protocols in absence and presence of different restorations in the three locations outside of FOV, both protocols were applied. Standardized CBCT scans of all specimens were taken using a GENDEX GDXP-700 (KAVO, Biberach, Germany). Two calibrated and blinded oral radiologists measured VDV, comparing high-dose and low-dose images without (gold standard group) and with (test group) restorations outside the FOV. Results: Significant differences in VDV were observed between control and experimental groups, particularly at the apex of the region of interest, with varying effects based on the restoration type and imaging dose. High-dose imaging generally showed more pronounced differences compared to low-dose imaging (p< .001). Among all restorations, titanium implants provided the most significant difference, ensuring affected outcomes and overall efficacy in dental practice. Conclusion: Different restorations outside the FOV significantly impact VDV in CBCT imaging with both high and low dose protocols. | ||
| Keywords | ||
| Artifacts; Low-dose; High-dose | ||
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