Evaluation of volumetric changes of the nasal cavity after surgically assisted rapid maxillary expansion

Author(s)

Ariane de Souza Oliveira

• Document type: Master's Dissertation
• Press: Araraquara. 2016-05-18.
• Institution: Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araraquara
• Defense date: 2016-03-24
• Advisor: Valfrido Antonio Pereira Filho; Andréa Gonçalves

Abstract

The objective of this study was to evaluate the volumetric changes of the nasal cavity in patients with transverse maxillary deficiency after surgically assisted rapid maxillary expansion. Cone beam tomographic images of 28 adult patients (17 women and 11 men) were evaluated. They were obtained after three different time periods: immediate preoperative period (T1), postoperative after completion of expansion (T2) and 6 months after expansion (T3). The DICOM images were imported and reconstructed through the On Demand 3D software, which allowed standardized multiplanar reconstruction of the interest region. For each image two examiners manually delimited the nasal air space, using the Image J software. Based on the Cavalieri principle, the summation of all measured areas in each patient/period was used to calculate of the volume in cubic millimeters. The data were analysed by the ANOVA and Tukey tests at 5% significance level. It was concluded that surgically assisted maxillary expansion in adults did not promote volume changes of the nasal cavity. (AU)

• FAPESP's process: 14/10239-3 - Evaluation of volumetric changes of the nasal cavity after surgically assisted rapid maxillary expansion
• Grantee: Ariane de Souza Oliveira
• Support Opportunities: Scholarships in Brazil - Master