Keywords: radiology, nasal obstruction, facial growth

Abstract: Introduction: Cranium-facial deformities resultants of the oral breathing plows plenty known and large discussed. Chronic nasal obstruction in the childhood takes the oral breathing of suply that, progressively, it takes to several organic alterations, as retro positioning mandibular, narrowing and lengthening of the face. It is essential evaluation and treatment of the nasal obstruction, seeking to liven up possible alterations of the development. Children in orthodontic treatment should receive evaluation Otolaryngolgy as the nasal obstruction. Material and methods: It's took place evaluation of the types more common of facial deformities found in patients with Chronic nasal obstruction, comparing with group controls without nasal alterations. It was evaluated patient of Health Clinic of Otoleryngology with complaint of Chronic nasal obstruction. They were submitted to a protocol with anamnese, otolaryngolgy exam and nasofibroscopy. The found causes of nasal obstruction were adenotonsillar hypertrophy, allergic rinopatie and septal deviate. The patients with Chronic nasal obstruction the lateral teleradiography was submitted for cephalometric analysis of Ricketts, with evaluation computerized for determination of the pattern of facial growth. The group controls it was also submitted to the protocol. Results: Are demonstrated the prevalence of adenotonsillar hypertrophy as cause of nasal obstruction, followed by concha hypertrophy for allergic rinopatie. The found facial patterns showed prevalence of the standard dolico facial (p < 0,05) in patients with nasal obstruction, in the group control there was not difference significant estatistic of this pattern. The study evaluated the found palatal deformity. Prevalence of palato atresic was shown (p<0,05) in the group with obstruction and palato without alterations in the control groups.