Oropharyngeal airway in children with Class III malocclusion evaluated by cone-beam computed tomography

Iwasaki, Tomonori; Hayasaki, Haruaki; Takemoto, Yoshihiko; Kanomi, Ryuzo; Yamasaki, Yuichi

doi:10.1016/j.ajodo.2009.02.017

Cited by 110 publications

(115 citation statements)

References 33 publications

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“…This permits the real evaluation of total volume (TV) and of minimum axial areas, thus contributing to improving the diagnosis. 1,5,7,8,12 In fact, the advent of CBCT has afforded highly reliable tests that, in turn, have led to remarkable developments in dentistry, regarding diagnosis and treatment management. 1,4,19 Nevertheless, despite the high reliability of this exam, a great variety of methodologies have been proposed to analyze these images, mainly of upper airway areas.…”

Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6] Alterations in upper airway breathing, particularly during facial growth, may affect the development of structures and functions of the stomatognathic system. 7 A lateral cephalogram is part of early orthodontic documentation, and its assessment has allowed orthodontists to view upper airway obstructions. [1][2][3] However, measurements in the sagittal plane are not accurate, insofar as this methodology has important limitations, with errors inherent to a two-dimensional representation of complex tridimensional structures.…”

Section: Introductionmentioning

confidence: 99%

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Reliability of a method to conduct upper airway analysis in cone-beam computed tomography

et al. 2013

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The aim of this study was to assess the reliability of a method to measure the following upper airway dimensions: total volume (TV), the nasopharyngeal narrowest areas (NNA), and the oropharyngeal narrowest areas (ONA). The sample consisted of 60 cone-beam computed tomography (CBCT) scans, evaluated by two observers twice, using the Dolphin 3D software (Dolphin Imaging & Management solutions, Chatsworth, California, USA), which afforded image reconstruction, and measurement of the aforementioned dimensions. The data was submitted to reliability tests, by the intraclass correlation coefficient (ICC), and the Bland & Altman agreement tests, with their respective confidence intervals (CI) set at 95%. Excellent intra-and interobserver reliability values were found for all variables assessed (TV, NNA and ONA), with ICC values ranging from 0.88 to 0.99. The data demonstrated an agreement between the two assessments of each observer and between the first evaluations of both observers, thus confirming the reliability of this methodology. The results suggest that this methodology can be used in further studies to investigate upper airway dimensions (TV, NNA, and ONA), thereby contributing to the diagnosis of upper airway obstructions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reliability of a method to conduct upper airway analysis in cone-beam computed tomography

et al. 2013

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“…5,23 Different aspects of craniofacial morphology can affect both upper as well as the lower airway and therefore in this study we have evaluated the pharyngeal airway space at four different levels.…”

Section: Discussionmentioning

confidence: 99%

Correlation between Pharyngeal Airway Space and Craniofacial Morphology - A Cephalometric Study

Kumar¹,

Nandi²

2017

IOSR JDMS

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“…Iwasaki et al 15) built a three-dimensional form of child occlusal throat taken at the opposite cone beam CT and reported that the area is larger in comparison with lower pharyngeal airway in children with Class I malocclusion .…”

Section: Verification Of the Hypothesismentioning

confidence: 99%

“…On the other hand, some reports pointed out that patients with skeletal mandibular protrusion have larger airway than normal pharyngeal airway 15) . From our years of clinical experience, it has been considered that patients with skeletal mandibular protrusion have wider pharyngeal airway than those with normal occlusion.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Morphological Changes in the Pharyngeal Airway Space before and after Sagittal Split Ramus Osteotomy

Uozumi

Yoshikawa²,

Yokoi

et al. 2012

J. Hard Tissue Biology.

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This study investigated the difference in pharyngeal spaces in orthodontic patients with or without setback surgery. The control group consisted of 28 patients who underwent orthodontic treatment alone and a study group consisting of 53 patients that had orthodontic treatment and sagittal split ramus osteotomy. The pharyngeal spaces were compared in both groups using cephalogram before and after treatment. During the initial visit, the middle and lower pharyngeal spaces were significantly larger in the study group than in the control group. However, there were no significant differences in any parameter used to measure the pharyngeal space between the two groups after surgery. The surgery contributed to the reduction in the size of the pharyngeal spaces. The pharyngeal space of patients who need setback surgery may be larger than orthodontic patients who do not need surgery.

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Oropharyngeal airway in children with Class III malocclusion evaluated by cone-beam computed tomography

Cited by 110 publications

References 33 publications

Reliability of a method to conduct upper airway analysis in cone-beam computed tomography

Reliability of a method to conduct upper airway analysis in cone-beam computed tomography

Correlation between Pharyngeal Airway Space and Craniofacial Morphology - A Cephalometric Study

A Comparative Study on the Morphological Changes in the Pharyngeal Airway Space before and after Sagittal Split Ramus Osteotomy

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