The influence of orofacial functions on sagittal growth and development of occlusion

Introduction. Orthodontics experience has shown that dental compensation of some skeletal irregularities is under the positive influence external factors. During sagittal development cranial base and arches, they can be placed in relationship I, II or III dentoalveolar class. Malocclusion may caused by a irregularity. Despite that, normal occlusion achieved compensation. The aim this study was to investigate orofacial functions on maxillary mandibular growth, as well plane. Material method. This consisted 60 male female adolescents (average age 15.9). Types respiration deglutition were clinically determined. Molar relation length arch evaluated from models. On lateral cephalograms following parameters measured: angles SNA, SNB, ANB, I/SpP i/MP. Results showed 78.8% patients with regular 11.1% irregular had developed molar class I. Patients Class I functions, protrusion upper incisors 88.9% (I) 80% (III) high arches 58.8% 70%(III). Conclusion. There between irregularities.