The aim of this study is to perform morphometric analysis of the foramen magnum (FM) and clivus using cone-beam computed tomography (CBCT) and to evaluate their applicability in age and gender estimation. Materials and Methods: CBCT images of 412 individuals (248 females and 164 males) were included in the study. The sagittal dimension (SD) and transverse dimension (TD) and area of the FM were measured. The width and length of clivus were calculated. The data were statistically analyzed with ANOVA, Kruskal-Wallis and t-tests to assess the level of significance for sex and age.
Result:The mean values of SD, TD, area of FM and width and length of clivus were higher in males than in females. Statistically significant differences were found between sexes for all variables (p<0.05). There was no statistically difference between age and FM dimensions (p>0.05). There was a significant relationship and positive correlation between length of clivus and age groups (p=0.009, r=0.351). Concusion: CBCT provides valuable information about the dimensions of the FM and clivus, and can be used reliably for anthropometric analysis and forensic medicine in the field of sexual dimorphism. The length of clivus can also help in determining age groups.