LAUSR

BACKGROUND The morphology of crista galli varies from one individual to another and its structure may be pneumatized or compact bone. This study purposed to investigate the morphometry of the crista galli (CG) on cone-beam computed tomography (CBCT) scans and to apply morphological classification based on the characteristics of the CG morphometry and to analysis the association of morphological and morphometric features with sex. MATERIALS AND METHODS The width, length, and height of the CG were calculated on the CBCT scans of 400 patients (233 females, 167 males). The CG was categorised into three morphological types and the presence of the CG pneumatisation and the Keros classification were examined. RESULTS The average length of the CG was 12.93 ± 2.12 mm, the average width of CG was 4.79 ± 1.54 mm, and the average height of CG was 16.21 ± 2.73. There was no statistical difference between sex and both height and length values. The mean CG width of female was found to be statistically significant higher than male. No statistically significant difference was determined between the morphological types of CG and sex. For width only, the area under the receiver-operating characteristic curve was found to be significantly higher than 0.5 and the cutoff value for the width parameter was determined as 4 mm. CONCLUSIONS The morphologic and morphometric features of CG, present of pneumatisation and relation the anatomy of olfactory region with CG can be analyzed in detail using CBCT. The mean CG width of female was found significantly higher than male. However, further studies with different populations and modality are needed to evaluate the relationship between morphologic and morphometric features of CG and sex.