Objective: The aim of the present research was to assess and compare the piriform aperture dimensions of subjects with a unilateral cleft lip and palate (UCLP) and those of a control group using cone-beam computed tomography (CBCT).
Design: CBCT data of 40 subjects with a complete UCLP (28 males and 12 females, with a mean age of 17.21 ± 5.75 years) and 40 CBCT images of age- and subjects with no cleft, serving as the control group (28 males, 12 females; mean age, 17.25 ± 5.74 years) were included in the study. The maximal height and width of the piriform aperture as well as nasal bone height were measured and statistically compared between the groups.
Results: There were no significant differences in the age and sex distributions between the groups. The mean piriform aperture height was significantly lower in the UCLP group than in the control group, while the mean piriform aperture width was significantly higher in the UCLP group compared to the control group ( < .01). Furthermore, the mean bony nasal height was found to be significantly lower in the UCLP group than in the control group ( < .01).
Conclusions: According to the present findings, UCLP is associated with changes in the piriform aperture dimensions due to lower height and higher width values. These structural alterations may contribute to the functional and aesthetic nasal challenges in patients with UCLP.
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