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Article

The Use of Relative Voxel Grey Values in CBCT to Evaluate Radiological Bone Density in the Mandible

1Department of Dental Prosthetic, Medical University of Lodz, Poland


International Journal of Dental Sciences and Research. 2018, Vol. 6 No. 3, 66-73
DOI: 10.12691/ijdsr-6-3-3
Copyright © 2018 Science and Education Publishing

Cite this paper:
Krzysztof Andruch, Monika Cecotka. The Use of Relative Voxel Grey Values in CBCT to Evaluate Radiological Bone Density in the Mandible. International Journal of Dental Sciences and Research. 2018; 6(3):66-73. doi: 10.12691/ijdsr-6-3-3.

Correspondence to: Monika  Cecotka, Department of Dental Prosthetic, Medical University of Lodz, Poland. Email: andruchk@wp.pl, m.cecotka@wp.pl

Abstract

Quality of CBCT images allows for detailed analysis of bone but tissue mineral density can be evaluated with some limitations. The purpose of this study was to investigate the clinical possibility to measure the mandible relative radiological bone density for cortical and trabecular tissue. The CBCT scans were taken with the use of PaxReve3D machine and analyzed by Ez3DPlus software. A modified scale was applied and the ratio of radiological density to measured highest value (HV) was calculated. The relative grey values (GV) of alveolar bone in mandible were measured. Basal cortical reference values (BCRV) of bone density were applied and compared with HVs. Statistically significant very strong positive correlation was observed between relative and rescaled GV for all available data r = 0.901; p < 0.0001. Pearson’s correlation coefficient between BCRVs and HVs was found as positive and strong r = 0.640 with R2 = 0.409. With the limitations of the study the use of relative grey scale values to evaluate radiological density of mandible is promising and easy to apply method.

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