Three-dimensional evaluation of upper airway following rapid maxillary expansion: A CBCT study

El, Hakan; Palomo, Juan Martín

doi:10.2319/012313-71.1

Cited by 118 publications

(154 citation statements)

References 29 publications

Supporting

Mentioning

128

Contrasting

Unclassified

Order By: Relevance

“…However, this finding probably seems to be affected by maxillary expansion. 13,29 Vertical growth pattern and maxillary growth deficiency observed in these patients might be possible reasons for the decreased airway volume. Since statistically significant differences were observed for oropharyngeal airway volume (P 5 .032) regarding 3D measurements, multiple linear regression analysis was performed to create a model using the SNB, ANB, SN-GoGn, Co-A, Co-Gn, PAS, and minAx as predictor variables (R 2 5 .704).…”

Section: Discussionmentioning

confidence: 99%

Assessment of pharyngeal airway volume in adolescent patients affected by bilateral cleft lip and palate using cone beam computed tomography

Çelikoğlu

Uçar

Şekerci

et al. 2014

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To test the null hypothesis that there were no significant differences for pharyngeal airway volumes between the adolescent patients affected by bilateral cleft lip and palate (BCLP) and well-matched controls using cone beam computed tomography. Materials and Methods: The study sample consisted of 16 patients (11 female and 5 male; mean [SD] age 14.1 [2.1] years) affected by BCLP and 16 patients (10 female and 6 male; mean [SD] age 13.4 [2.0] years) as age-and sex-matched control group. Craniofacial measurements and pharyngeal airway dimension, area, and volume measurements of patients in both groups were calculated and statistically examined using Student's t-test and multiple linear regression analyses. Results: Statistically significant differences were found between the BCLP and control groups for SNB (P , .05), SN-GoGn (P , .05), Co-A (P , .05), PAS (P , .01), minAx (P , .01), and oropharyngeal airway volume (P , .05). The most predictive variables for oropharyngeal airway volume were found as PAS (r 5 .655 and P 5 .000) and minAx (r 5 .787 and P 5 .000). Conclusions: The null hypothesis was rejected. Oropharyngeal (P , .05) and total (P . .05) airway volumes were found to be less in the BCLP group, and thus the treatment choice in these patients should have positive effects on the pharyngeal airway. (Angle Orthod. 2014;84:995-1001.)

show abstract

Section: Discussionmentioning

confidence: 99%

Assessment of pharyngeal airway volume in adolescent patients affected by bilateral cleft lip and palate using cone beam computed tomography

Çelikoğlu

Uçar

Şekerci

et al. 2014

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…While the effect of expansion was not accounted for in the present study, it may not have a significant influence. Several studies have used CBCT scans to evaluate airway changes following palatal expansion, finding no statistically significant effect on OA volume, [30][31][32][33][34] although significant effects have been demonstrated in the nasopharyngeal airway. 35 Lastly, CBCT scans were obtained in the current study with subjects in a seated position.…”

Section: Discussionmentioning

confidence: 99%

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Rizk¹,

Kulbersh

Al-Qawasmi

2015

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To evaluate the effects of functional appliance treatment on the oropharyngeal airway volume, airway dimensions, and anteroposterior hyoid bone position of growing Class II patients. Materials and Methods: Twenty Class II white patients (mean age, 11.7 6 1.75 years) treated with the MARA followed by fixed appliances were matched to an untreated control sample by cervical vertebrae maturation stage at pretreatment (T1) and posttreatment (T2) time points. Cone beam computed tomography scans were taken at T1 and T2. Dolphin3D imaging software was used to determine oropharyngeal airway volume, dimensions, and anteroposterior hyoid bone position. Results: Multivariate ANOVA was used to evaluate changes between T1 and T2. Oropharyngeal airway volume, airway dimensions, and A-P position of the hyoid bone increased significantly with functional appliance treatment. SNA and ANB decreased significantly in the experimental group (P # .05). Changes in SNB and Sn-GoGn failed to reach statistical significance. Conclusions: Functional appliance therapy increases oropharyngeal airway volume, airway dimensions, and anteroposterior hyoid bone position in growing patients. (Angle Orthod. 2016;86:955-961.)

show abstract

“…17 Recently, studies have performed three-dimensional analyses of upper airways in healthy children or included healthy children as a control [18][19][20][21][22][23][24][25][26][27] (Table 1). However, there was a lack of airway delineation according to anatomical boundaries in children, [18][19][20][24][25][26][27] and/or easily mobile soft-tissue landmarks were used. 21,22 Furthermore, anterior or posterior anatomical margins were generally not described (Table 1).…”

Section: Introductionmentioning

confidence: 99%

Proposal of new upper airway margins in children assessed by CBCT

Anandarajah¹,

Abdalla²,

Dudhia³

et al. 2015

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objectives: Recently, studies have performed three-dimensional analyses of upper airways in children. However, there was a lack of airway delineation according to anatomical boundaries and/or easily mobile soft-tissue landmarks were used. The aim of the present study was to define new upper airway margins in children on CBCT according to anatomical bony landmarks and to validate the method. Methods: 25 scans were randomly selected from a larger database containing CBCT scans of children prior to orthodontic treatment (14 girls and 11 boys; mean age, 10.9 ± 2.5 years). Scans were evaluated by two observers. Specific head positioning and virtual orientation protocols were adopted and greyscale thresholding was established for each patient. Volume and minimum cross-sectional area of the oropharynx were calculated. Intra-and interobserver reliability were assessed by reassessment of the CBCTs 2 weeks later. Results: The new airway margins were defined superiorly by a line passing through the palatal plane (anterior nasal spine to posterior nasal spine) extending to the posterior wall of the pharynx, inferiorly by a line passing from the anterosuperior edge of C4 to menton, anteriorly by a line passing from the soft palate to menton, posteriorly and laterally by the respective pharyngeal walls. Method error for airway volume and minimal cross-sectional area was #2.00%, and intra-and interobserver reliability ranged from 0.99 to 1.00. Conclusions: The proposed protocol utilizes easily identifiable bony landmarks to delineate the upper airway on cone beam scans of children and was found to be reliable and reproducible.

show abstract

Three-dimensional evaluation of upper airway following rapid maxillary expansion: A CBCT study

Abstract: Objectives: To evaluate, by using cone beam computed tomography,

Cited by 118 publications

References 29 publications

Assessment of pharyngeal airway volume in adolescent patients affected by bilateral cleft lip and palate using cone beam computed tomography

Assessment of pharyngeal airway volume in adolescent patients affected by bilateral cleft lip and palate using cone beam computed tomography

Changes in the oropharyngeal airway of Class II patients treated with the mandibular anterior repositioning appliance

Proposal of new upper airway margins in children assessed by CBCT

Contact Info

Product

Resources

About