Comparison of Cone-beam Computed Tomography and Multi-slice Spiral Computed Tomography Bone Density Measurements in the Maxilla and Mandible.
The purpose of this study was to compare cone-beam computer tomography (CBCT) and multi-slice spiral computed tomography (MSCT) bone density measurements in the maxilla and mandible to determine whether any discrepancies between imaging modalities exist.33 sets of CBCT and MSCT scans were evaluated using Simplant software. Density measurements were made in eight regions of interest on each scan and were compared and analyzed.Correlation of density measurements at specific regions of interest between CBCT and MSCT was only fair and ranged from 0.61-0.86. High-density areas, such as the anterior mandible, showed a higher correlation between imaging modalities than low-density regions, such as the posterior maxilla.Care should be taken when relying upon CBCT to determine bone density, especially in low-density regions such as the posterior maxilla.