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Geometrical parameters of the mandible in 3D CBCT imaging

Ryniewicz Wojciech, Ryniewicz Anna, Bojko Łukasz

Biocybernetics and Biomedical Engineering

2019

Vol. 39, no. 2

301--311

The aim of the study is to report on a method for the measurement and analysis of the accuracy in mapping the shape of the mandible spatially modeled based on cone beam imaging. To achieve this goal, the geometrical determinants of the mandible shape were identified; in addition, the accuracy of their cone beam in computer tomography (CBCT) images was verified. The latter – verification of images – was based on reference measures made by a coordinate measuring machine (CMM). The parameters that were analyzed were: Bonville's triangle, the occlusal plane, and the mandible symmetry in relation to the sagittal plane. Descriptive statistics and distribution of individual variables were determined. The results were analyzed statistically using the U-Mann Whitney test. The geometrical parameters of the mandible determined on the basis of CBCT and CMM imaging do not differ significantly.