Avaliação das vias aeríferas superiores, antes e após expansão rápida da maxila, utilizando Tomografia Computadorizada por Feixe Cônico / Assessment of upper airway before and after rapid maxillary expansion using Cone Beam Computed Tomography

AUTOR(ES)

Annelise Nazareth Cunha Ribeiro

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

03/06/2011

RESUMO

The predominantly oral breathing is constantly cited as an etiological factor for the transverse maxillary deficiency. Rapid Maxillary Expansion is an excellent method for the correction of malocclusion, through the opening of the midpalatal sutures. The literature shows that the benefits of this procedure are beyond the dental benefits, and could have repercussions in the upper airways, due to its close relationship with the maxilla. The cone beam computed tomography has been described as is an accurate method of taking pictures and before the limitations of conventional radiographic methods the aim of this study is to evaluate the immediate morphological changes resulting from the ERM, the nasal cavity and the nasal region and oropharynx, through the CBCT. We evaluated 15 patients with maxillary width deficiency were treated with RME, which hosted the CBCT to the beginning and after the retention period of 3 months. The results show that the nasal cavity presents significant increase in cross their lower third, in the anterior (1.08 mm ± 0.15), medium (1.28 mm ± 0.15) and posterior (0.77 mm ± 0.12). No significant change in volume (p=0.11), median sagittal area (p=0.33) and lower axial area (p=0.29) resulting from the RME in nasopharynx. There is significant change in volume (p = 0.05), median sagittal area (p = 0.01) and lower axial area (p = 0.04) before and immediately after the RME in the oropharynx. After analysis and discussion of results in this study, we concluded that RME is able to increase the transverse width of the nasal cavity, not having the same effect in the nasopharynx, and that the changes found in the oropharynx may be due to the lack of positioning standardization of the head and tongue at the time of image acquisition.

ASSUNTO(S)

cone beam computed tomography expansão rápida da maxila rapid maxillary expansion tomografia computadoriza por feixe cônico upper airway vias aeríferas superiors

Documentos Relacionados

• Efeitos na posição mandibular decorrentes da expansão rápida da maxila, em tomografia computadorizada Cone Beam
• Alterações dimensionais produzidas nas vias aéreas superiores após expansão rápida da maxila : avaliação por tomografia computadorizada cone beam
• Maxillary sinus evaluation through Cone Beam Computed Tomography
• Evaluation of palate area before and after rapid maxillary expansion, using cone-beam computed tomography
• Análise da expansão rápida da maxila por meio da tomografia computadorizada Cone-Beam