Sexual dimorphism of foramen magnum using Cone Beam Computed Tomography.

Objectives: The aim of this study was to evaluate whether the foramen magnum (FM) dimensions could be used for sex determination using the Cone Beam Computed Tomography (CBCT).

Methods: Two hundred and sixty six CBCT full Field Of View (FOV) scans (111 males and 115 female subjects) of the skull were retrospectively selected and the FM length, width measured on reconstructed axial cross section by two observers using the CS 3D imaging software at a slice thickness of 300 μm and the FM area subsequently calculated using two established formulae by Routal and Teixeira. All data were subjected to descriptive and discriminant functional analysis to validate the expression of sexual dimorphism in the metric parameters of FM.

Visibility of lamina dura and periodontal space on periapical radiographs and its comparison with cone beam computed tomography.

Objectives: To retrospectively evaluate the subjective quality of images of cone beam computed tomography and compare with periapical radiographs (PR) to determine whether lamina dura (LD) and periodontal ligament (PDL) space can be detected and reported.

Study Design: Sixty scans for anterior and posterior teeth with PR were included and scored on four point subjective scale. Scores assessed using Wilcoxon Signed rank test with the level of statistical significance P < 0.