Oropharyngeal airway changes after rapid palatal expansion evaluated with cone-beam computed tomography

Zhao, Ying; Nguyen, Manuel; Gohl, Elizabeth; Mah, James; Sameshima, Glenn T.; Enciso, Reyes

doi:10.1016/j.ajodo.2008.08.026

Cited by 123 publications

(115 citation statements)

References 26 publications

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“…Zhao et al, 7 who analyzed the same area with CBCT before and 15 months after RME, found no significant differences in the volume of the oropharynx and nasopharynx. They reported that the hypothesis that there is a change in the upper airways after the procedure is not supported.…”

Section: Discussionmentioning

confidence: 99%

“…Some authors claim that there is no evidence to support the hypothesis that no change of volume occurs in the region of the nasal cavity and oropharynx after RME. [7][8][9] Conversely, other authors believe that RME increases the nasal volume and therefore could increase nasal permeability and establish a pattern of nose breathing. 8 Because cone-beam computed tomography is considered a reliable method of assessing the oral cavity and upper airways, we conducted this study to examine possible changes in the upper airway after RME.…”

Section: Introductionmentioning

confidence: 98%

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Upper airway expansion after rapid maxillary expansion evaluated with cone beam computed tomography

Ribeiro

Paiva

Rino-Neto

et al. 2012

The Angle Orthodontist

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Objective: Cone-beam computed tomography (CBCT) is a reliable method of assessing the oral cavity and upper airways. We conducted this study to examine the changes introduced by rapid maxillary expansion in the nasal cavity, nasopharynx, and oropharynx as seen with images obtained by CBCT. Materials and Methods: We evaluated 15 patients with maxillary width deficiency treated with RME. Patients were subjected to CBCT at the beginning of RME and after the retention period of 4 months. Results: The nasal cavity presented a significant transverse increase in the lower third, in the anterior (1.08 mm 6 0.15), medium (1.28 mm 6 0.15), and posterior regions (0.77 mm 6 0.12). No significant change occurred in the nasopharynx in volume (P 5 .11), median sagittal area (P 5 .33), or lower axial area (P 5 .29) resulting from the RME. A significant change was noted in the oropharynx in volume (P 5 .05), median sagittal area (P 5 .01), and lower axial area (P 5 .04) before and immediately after the RME. Conclusions: RME is able to increase the transverse width of the nasal cavity, but it does not have the same effect in the nasopharynx. Changes noted in the oropharynx may be due to the lack of a standardized position of the head and tongue at the time of image acquisition. (Angle Orthod. 2012;82:458-463.)

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Upper airway expansion after rapid maxillary expansion evaluated with cone beam computed tomography

Ribeiro

Paiva

Rino-Neto

et al. 2012

The Angle Orthodontist

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“…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

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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.)

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“…3,4,17,18,[20][21][22] Our examination shows changes of pharyngeal airway dimensions in a study group compared with the control group, at three levels: the biggest increase of the pharyngeal airway dimension in investigated group was seen at the level of vallecula epiglottis (va-pva; 2.97 mm), at the level of uvula (uv-puv; 2.88 mm), and the level of adenoids (PNS-ad1; 2.52 mm), respectively (Table 1). Furthermore, we found improvement of the nasopharyngeal airway capacity at the investigated sample.…”

Section: -22mentioning

confidence: 99%

“…[7][8][9][10][11][12][13][14] Still, there are some studies concerning changes in the pharyngeal airway and head posture before and after rapid maxillary treatment. [15][16][17][18][19][20][21][22] The aim of this study was to evaluate the effects of RME on the changes in head posture and airway dimension.…”

Section: Introductionmentioning

confidence: 99%

Changes in head posture after rapid maxillary expansion in patients with nasopharyngeal obstruction

Kjurchieva-Chuchkova

Kanurkova

Bajraktarova-Miševska

2017

sejodr

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Introduction: Nasopharyngeal obstruction is an important etiologic factor in the development of an extreme vertical growth facial pattern, and insufficient transversal growth of the maxilla. The treatment outcomes associated with rapid maxillary expansion in the literature are mainly discussed in terms of changes in dentofacial morphology, without special reference to changes in the pharyngeal airway, the position of the mandible, hyoid bone and the tongue.

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Oropharyngeal airway changes after rapid palatal expansion evaluated with cone-beam computed tomography

Cited by 123 publications

References 26 publications

Upper airway expansion after rapid maxillary expansion evaluated with cone beam computed tomography

Upper airway expansion after rapid maxillary expansion evaluated with cone beam computed tomography

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

Changes in head posture after rapid maxillary expansion in patients with nasopharyngeal obstruction

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