Recently many postural diseases have been classified among occlusal-functional alterations, mostly on a clinical basis. However some anatomic and physiologic aspects are still unknown. The purpose of this study was to review the literature and to support the correlations by means of a balance platform on a group of 50 patients (30 males and 20 females, mean age 25.8 years) belonging to every Angle classification of malocclusion. The subjects were asked to stand on the balance platform and perform five different tests. The results showed that subjects with a Class II malocclusion exhibit an anteriorly displaced posture, whereas subjects with a Class III malocclusion exhibit a posteriorly displaced posture.