This observational cross-sectional study aims to investigate the association between skeletal malocclusions and body posture using three-dimensional postural analysis. Patients will undergo cephalometric assessment, temporomandibular disorder evaluation using the Helkimo index, and non-invasive postural evaluation using the Spine 3D system, based on rasterstereography technology. Postural parameters, including thoracic kyphosis, lumbar lordosis, trunk inclination, pelvic asymmetry, and spinal deviations, will be analysed in relation to skeletal malocclusion classes and temporomandibular disorders. The study seeks to improve the understanding of the potential interactions between the stomatognathic system and global body posture and to support a multidisciplinary diagnostic approach in orthodontic patients.