The asymmetric face is common so that increased interest in it . there are different ways to assess the asymmetry. Computed tomography is an accurate way that enable the examiner for reading the face at three planes ,and present three-dimensional information on the cranial mandibular Complex whereas (3D) analysis is essential for making a precise diagnosis of craniofacial morphology . Aim : This research aims to study the asymmetric at the facial patterns malocclusion (class I. Class III) using CT .