Soft tissue airway dimensions and craniocervical posture in subjects with different growth patterns

Ansar, Juhi; Maheshwari, Sandhya; Verma, Sanjeev; Singh, Raj Kumar; Agarwal, Deepak; Bhattacharya, Preeti

doi:10.2319/042314-299.1

Cited by 21 publications

(20 citation statements)

References 21 publications

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“…No significant differences of these measurements were found in both mandibular deviated group and control group. Similarly, MM 45 , FMA 46 and SN-MP 47 showing the vertical skeletal pattern, were no significant differences between mandibular deviated group and control group. According to vertical measurements, no subject with severe mandibular hypodivergency or hyperdivergency was included in the sample, because this aspect can influence airway dimensions, as described by Joseph et al .…”

Section: Discussionmentioning

confidence: 75%

Upper airway asymmetry in skeletal Class III malocclusions with mandibular deviation

Zheng

Wang

et al. 2017

Sci Rep

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The purpose of this study was to investigate the relationship between bilateral differences of upper airway and mandibular morphologic patterns in subjects with skeletal Class III mandibular deviation. 47 skeletal Class III (ANB < 0°) adult patients with and without mandibular deviation were divided into 2 groups. Bilateral differences of minimum cross-sectional area, mean cross-sectional area, volume of subdivisions (nasopharynx, palatopharynx, glossopharynx, hypopharynx) were assessed paired t test. Stepwise linear regression analysis and Pearson correlation coefficients were computed between a significant pair of upper airway variables and a pair of mandibular deviation variables to examine the quantitative relationship between the upper airway asymmetry and mandibular deviation. The mean cross-sectional area and the volume of palatopharynx on the deviated side in mandibular deviated group was significantly smaller than non-deviated side. The asymmetry index of the palatopharyngeal volume showed significant correlations with CRA asymmetry (r = 0.49) and Ramus asymmetry (r = 0.54). However, in the glossopharyngeal and hypopharyngeal segment, the mandibular deviated group showed significant asymmetry, characterized by larger mean cross-sectional area and volume in deviated side. The asymmetry index of the glossopharyngeal volume and hypopharyngeal volume showed significant correlations with CRA asymmetry (r = 0.42), Me-s (r = 0.72) and Me-s (r = 0.67) respectively.

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Section: Discussionmentioning

confidence: 75%

Upper airway asymmetry in skeletal Class III malocclusions with mandibular deviation

Zheng

Wang

et al. 2017

Sci Rep

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“…Controversy still exists concerning the accuracy of the lateral cephalograms since they depict a two‐dimensional view of a three‐dimensional structure . However, we chose this method instead of cone‐beam computed tomography scans for ethical reasons and because the potential benefits of diagnosis and treatment planning do not outweigh the potential risks of an increased radiation dose …”

Section: Discussionmentioning

confidence: 99%

“…Cephalometric analysis of the PAS was highly correlated with measurements using a three‐dimensional computed tomography with considerably high accuracy in predictability, and also offers considerable advantages, including low cost, convenience, minimal exposure to radiation and the ability to simultaneously analyse head position, craniofacial morphology and pharyngeal airway …”

Section: Discussionmentioning

confidence: 99%

Short‐term pharyngeal airway space changes after mandibular advancement surgery in Class II patients—a two‐dimensional retrospective study

Vale

Rodrigues

Francisco

et al. 2019

Orthod Craniofacial Res

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Structured Abstract Introduction Planning successful treatment for the correction of anatomic abnormalities of the upper airways, by surgical advancement of the mandible, depends on extensive knowledge of the pharyngeal airway space (PAS). However, there is limited scientific evidence about changes in PAS after mandibular advancement surgery. Aim To evaluate the immediate changes in superior posterior airway space (SPAS) in Class II patients, after mandibular advancement surgery. Materials and Methods A cephalometric evaluation of 37 patients with skeletal Class II deformity was performed at 2 distinct time intervals: Pre‐operative (T0) and immediate post‐operative (T1), using Dolphin Image & Management Solutions, version 11.9, according to the method of Arnett/Gunson FAB Surgery. The differences due to the surgical intervention were assessed with Student's t test, and a Principal Component Analysis was used to evaluate the relationship between mandibular advancement and SPAS variables. Anticlockwise and clockwise rotation groups were also evaluated with Mann‐Whitney tests. The statistical analysis was conducted in SPSS and R assuming a 0.05 level of significance. Results As an effect of mandibular advancement, an anteroposterior statistically significant increase in SPAS (P < 0.001) was perceived at all points measured. Conclusion Our findings indicate that mandibular advancement surgery is a viable option to achieve widening of the SPAS in patients with Class II skeletal morphology.

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“…In fact, both anterior and posterior facial heights appear to be positively correlated with all the volumetric measurements of the airway, with the exception of the middle pharyngeal third [19].…”

Section: Mini Reviewmentioning

confidence: 92%

Long Face Syndrome: A Literature Review

Bansal¹,

Sharma²,

Kumar³

et al. 2015

JDHODT

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Long face morphology is a relatively common presentation among orthodontic patients. Despite being described extensively in the orthodontic literature, the long face morphology still remains unclear. The term "long face syndrome" depicts only the vertical component of the three dimensional problem which exists in these patients. Most studies to date concentrate on only the open bite variant of this multifaceted problem. The aim of this article is to comprehensively review the literature and present the varied clinical manifestations, etiology and available treatment modalities of the "Long Face Syndrome".

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Soft tissue airway dimensions and craniocervical posture in subjects with different growth patterns

Abstract: Smaller nasopharyngeal and oropharyngeal airways were seen in connection with a large craniocervical and a large mandibular inclination. We therefore suggest that the vertical skeletal pattern may be one of the factors that contribute to nasopharyngeal and oropharyngeal obstruction.

Cited by 21 publications

References 21 publications

Upper airway asymmetry in skeletal Class III malocclusions with mandibular deviation

Upper airway asymmetry in skeletal Class III malocclusions with mandibular deviation

Short‐term pharyngeal airway space changes after mandibular advancement surgery in Class II patients—a two‐dimensional retrospective study

Long Face Syndrome: A Literature Review

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