EVALUATION OF MAXILLARY TRABECULAR MICROSTRUCTURE BY USING TWO CBCT SYSTEMS AND MICRO-CT

Publication date: Available online 1 December 2018

Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

Author(s): Kıvanc Kulah, Ayse Gulsahi, Kıvanç Kamburoğlu, Ferhat Geneci, Mert Ocak, H. Hamdi Celik, Tuncer Ozen

Abstract

Objective

To assess trabecular microarchitecture of the maxilla by using Cone-beam computed tomography (CBCT) and microcomputed tomography (micro-CT) ex vivo.

Study Design

Seventeen maxillary cadaver specimens were scanned using micro-CT and CBCT devices. Samples were scanned with two CBCT device at different voxel sizes (0.08, 0.125 and 0.160 mm for 3D Accuitomo 170; 0.75 and 0.200 mm for Planmeca Promax 3D Max). Morphometric parameters such as; bone volume ratio (BV/TV), trabecular thickness (Tb.Th), trabecular separation (Tb.Sp), trabecular number (Tb.N), and degree of anisotropy (DA) were assessed using CTAnalyzer software. Bland-Altman Limits of Agreement and Intraclass Correlation Coefficient (ICC) were performed in order to evaluate the agreement between CBCT and micro-CT in consideration to measured morphometric parameters. Statistical significance was set at p<0.05.

Results

BV/TV, Tb.Th, Tb.Sp and DA values were higher for CBCT images when compared to micro-CT images, whereas Tb.N value was lower with CBCT images than micro CT images. BV/TV and DA parameters showed the highest agreement between CBCT and micro-CT devices (ICC=0.421 for BV/TV and ICC=0.439 for DA, p<0.01).

Conclusion

BV/TV and DA parameters measured on CBCT obtained at the smallest voxel size was found to be useful for the assessment of maxillary trabecular microstructure.

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