Evaluation of upper and lower pharyngeal airway in hypo and hyper divergent Class I, II and III malocclusions in a group of Egyptian patients

摘要: Abstract Introduction Significant relationships between the pharyngeal structures and both dento-facial craniofacial have been reported. Hyper-divergent patients may lead to narrower antero-posterior dimensions of airway. Some authors associated vertical growth pattern with obstruction upper lower airways others mouth breathing Class II malocclusion. So aim this study was assess airway width in different patterns evaluate sexual dimorphism a group Egyptian patients. Patients method A sample 300 had divided into (5) groups (each 60 patients) 1 I, 2 3 division (maxillary prognathism mandibular deficiency), 4 5 III deficiency prognathism). Each three sub (hypo-hyper normal divergent) pattern. subgroup consists 10 male female. The widths were measured compared for all groups. Results differences exist regarding I class 1, prognathism, maxillary deficiency, prognathism. hypo, hyper Conclusions In hyper-divergent than hypo-divergent growth. wider Lower narrowest widest Males females.