Evaluation of pharynx in unilateral compete cleft lip and palate with CBCT
Objective To investigate the difference between the three-dimensional structure of pharyngeal cavity in patients with unilateral complete cleft lip and palate(UCLP)and normal people.Methods CBCT of patients with UCLP and normal was analyzed by Mimics.Linear(Dtp、Dtc2、Dtc3、Dsp、Dsc2、Dsc3),planar(Ap、Ac2、Ac3),and volumetric(Vt、Vp、Vp-c2、Vc2-c3)were compared between UCLP and normal.Statistical analyses were performed by using independent-samples t test,with the threshold of significance set at P=0.05.Results A total of 18 patients with unilateral complete cleft lip and palate and 20 normal controls of the same age were included.Dsp,Ap,Vt,Vp and VP-C2 in unilateral complete cleft lip and palate patients were higher than those in normal group(P=0.000,P=0.003,P=0.021,P=0.004,P=0.000).Conclusion CBCT found that pharynx was enlarged in adult patients with UCLP,and the difference was mainly due to the increase of nasopharyngeal area and volume caused by the increase of anterior and posterior diameter of nasopharynx.
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