Results
Intra-observer consistency: Repeated CT measurements indicated no significant intra-observer difference for the first observer (p > 0,05). Overall intra-observer consistency was rated at 88.4% between the two evaluations and measurements. All measurements were found to be highly reproducible for both observers and no significant difference obtained from two measurements of the observers (p > 0,05). Thus, the mean values of all measurements were included in the statistical analysis.
Differences between the two groups for variables are presented in Table 1, and differences between left and right maxillary sinuses, separately for the two groups are presented in Table 2. Statistically significant results were obtained between groups for ethmoid and maxillary sinus volumes (left and right). Ethmoid and maxillary sinus volumes (left and right) were smaller in the Le Fort group. No statistically significant differences were present for sphenoid sinus volume of two groups. Left and right maxillary sinus volumes did not vary in the total study group. The presence of Onodi cells did not vary between groups.