Three-Dimensional Analysis of the Condylar Hypoplasia and Facial Asymmetry in Craniofacial Microsomia Using Cone-Beam Computed Tomography

PurposeTo assess the condylar hypoplasia and its correlation with craniofacial deformities in adults unilateral microsomia (CFM).MethodsPretreatment cone-beam computed tomography scans of consecutive (mean age: 20.4 ± 3.0 years; range: 17.3 to 31.4 years) Pruzansky-Kaban type I IIA CFM were reconstructed 3D. Both condyles segmented. Asymmetry ratios (affected side/contralateral side) volume calculated indicate extent hypoplasia. 3D cephalometry was performed quantify maxillomandibular morphology facial asymmetry. The correlations between assessed by using Pearson's or Spearman's coefficients.ResultsThirty-six subjects enrolled, consisting 22 14 IIA. group significantly more hypoplastic height (asymmetry ratio: 40.69 vs 59.95%, P = .006) (18.16 47.84%, < .001) compared group. Type had a smaller SNB value than (72.94° 77.41°, .012), greater asymmetry (P .05). types correlated (r 0.457 ? -0.411, respectively), upper incisor deviation -0.446 0.362), chin -0.477 0.527), occlusal plane cant -0.672 0.631), mandibular -0.557 0.357, .05).ConclusionFor adults, along severe retrusion objectively indicated higher scale classification (type IIA). These quantitative distinctions are expected enhance diagnostic reliability CFM. To (CFM). Pretreatment coefficients. Thirty-six For