A Comparison of Three-Dimensional and Two-Dimensional Cephalometric Evaluations of Children with Cleft Lip and Palate

OBJECTIVES: The aim of this retrospective study was to compare the consistency of orthodontic measurement performed on cephalometric films and 3D CT images of cleft lip and palate (CLP) patients. METHODS: The study was conducted with 2D radiographs and 3D CT images of 9 boys and 6 girls aged 7–12 with CLP. 3D reconstructions were performed using MIMICS software. RESULTS: Frontal analysis found statistical differences for all parameters except occlusal plane tilt (OcP-tilt) and McNamara analysis found statistical differences in 2D and 3D measurements for all parameters except ANS-Me and Co-Gn; Steiner analysis found statistical differences for all parameters except SND, SNB and Max1-SN. Intra-group variability in measurements was also very low for all parameters for both 2D and 3D images. CONCLUSIONS: Study results indicate significant differences between measurements taken from 2D and 3D images in patients with cleft lip and palate.