Comparison of airway space with conventional lateral headfilms and 3-dimensional reconstruction from cone-beam computed tomography

Aboudara, Cameron L; Nielsen, Ib Leth; Huang, John; Maki, Koutaro; Miller, Arthur J.; Hatcher, David

doi:10.1016/j.ajodo.2007.04.043

Cited by 332 publications

(277 citation statements)

References 27 publications

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“…4,5,6 Airway analysis often included cephalograms, 7 and their reliability was found to be adequate. 8 Studies have shown an association between craniofacial morphology and airway dimensions, 9,10 and there is limited knowledge due to the effect of a steep mandibular plane angle on airway size. 11,12,13 Reduction in airway space after mandibular setback surgery in Class III patients was declared to be a causative factor in airway obstruction.…”

Section: Introductionmentioning

confidence: 99%

Effects of reverse headgear on pharyngeal airway in patients with different vertical craniofacial features

et al. 2015

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The aim of this study was to investigate the effects of reverse headgear (RH) on pharyngeal airway morphology in two groups of Class III patients with different vertical craniofacial features in comparison with an untreated Class III group. Seventeen subjects (9 males, 8 females; mean age 11.3 ± 0.98 years) with optimum vertical growth and 17 subjects (10 males, 7 females, mean age 11.5 ± 1.1 years) with a vertical growth pattern treated with a removable intra-oral appliance and a Delaire type facemask were included. An untreated Class III control group of 11 subjects (8 males, 3 females, mean age 9.1 ± 1.1 years) was included to compare the treated groups. The paired t-test for intragroup and one-way ANOVA for intergroup comparisons were performed. The relationships between changes in the craniofacial morphology and airway were assessed by Spearman correlation analysis. The airway dimensions at the adenoid side and soft palate were increased in the treatment groups compared to the control group (p < 0.05). The nasopharyngeal area demonstrated a significant difference in normodivergent and control subjects (p < 0.05). No significant difference was found in the airway morphology due to different vertical features. The effect of RH treatment on the sagittal airway dimensions revealed no significant difference between different vertical craniofacial features in the short term.

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Section: Introductionmentioning

confidence: 99%

Effects of reverse headgear on pharyngeal airway in patients with different vertical craniofacial features

et al. 2015

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“…Because lateral films represent three-dimensional (3D) structures in two dimensions that do not allow the evaluation of those structures' volumes, previous studies were limited. 18 In addition, lateral cephalometric films have severe limitations, such as distortion, low reproducibility due to difficulties in landmark identification, differences in magnification, and the superimposition of bilateral craniofacial structures.…”

Section: Introductionmentioning

confidence: 99%

Comparison of pharyngeal airway volume among different vertical skeletal patterns: A cone-beam computed tomography study

Çelikoğlu

Bayram

Şekerci

et al. 2014

The Angle Orthodontist

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Objective: To test the null hypothesis that there are no significant differences in pharyngeal airway volumes among adult patients with different vertical skeletal patterns and a clinically normal sagittal skeletal pattern using cone-beam computed tomography (CBCT). Material and Methods: The study sample consisted of 100 adult patients (45 men and 55 women; mean age 5 24.0 6 5.3 years) with a normal sagittal skeletal pattern divided into three groups according to the vertical skeletal patterns: high angle (32 patients: 15 women and 17 men), low angle (34 patients: 14 women and 20 men), and normal angle (34 patients: 16 women and 18 men) groups. Nasopharyngeal, oropharyngeal, and total airway volumes of patients in all vertical groups were calculated. Group differences were analyzed using one-way analysis of variance and post hoc Tukey tests. Results: Nasopharyngeal airway volume in the high-angle group (mean 5 6067.9 6 1693.9 mm 3

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“…CBCTs have been shown to be more accurate in measuring airway volume and are not prone to the distortion or position errors that can occur with 2D imaging. [22][23][24] Furthermore, CBCT scans report 3D volumes rather than 2D regions, which might not reflect the true anatomic structure of interest. Our 3D study showed an increase in airway volume, sagittal dimension, and minimum Table 2.…”

Section: Discussionmentioning

confidence: 99%

Effect of Class III bone anchor treatment on airway

Nguyen

Clerck

Wilson

et al. 2014

The Angle Orthodontist

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Objectives: To compare airway volumes and minimum cross-section area changes of Class III patients treated with bone-anchored maxillary protraction (BAMP) versus untreated Class III controls. Materials and Methods: Twenty-eight consecutive skeletal Class III patients between the ages of 10 and 14 years (mean age, 11.9 years) were treated using Class III intermaxillary elastics and bilateral miniplates (two in the infra-zygomatic crests of the maxilla and two in the anterior mandible). The subjects had cone beam computed tomographs (CBCTs) taken before initial loading (T1) and 1 year out (T2). Twenty-eight untreated Class III patients (mean age, 12.4 years) had CBCTs taken and cephalograms generated. The airway volumes and minimum crosssectional area measurements were performed using Dolphin Imaging 11.7 3D software. The superior border of the airway was defined by a plane that passes through the posterior nasal spine and basion, while the inferior border included the base of the epiglottis to the lower border of C3. Results: From T1 to T2, airway volume from BAMP-treated subjects showed a statistically significant increase (1499.64 mm 2015;85:591-596.)

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Comparison of airway space with conventional lateral headfilms and 3-dimensional reconstruction from cone-beam computed tomography

Cited by 332 publications

References 27 publications

Effects of reverse headgear on pharyngeal airway in patients with different vertical craniofacial features

Effects of reverse headgear on pharyngeal airway in patients with different vertical craniofacial features

Comparison of pharyngeal airway volume among different vertical skeletal patterns: A cone-beam computed tomography study

Effect of Class III bone anchor treatment on airway

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