Alterations of hyoid bone position and pharyngeal depth and their relationship after surgical correction of mandibular prognathism

Athanasiou, Athanasios E.; Toutountzakis, Nick; Mavreas, Dimitrios; Ritzau, M; Wenzel, Ann

doi:10.1016/0889-5406(91)70063-3

Cited by 113 publications

(98 citation statements)

References 13 publications

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“…Previous studies have shown changes in the positions of the tongue and the hyoid bone and consequent narrowing of the PAS after orthognathic surgical procedures in a pattern closely resembling that seen in sleep apnea subjects [9][10][11][12]17,19 . The narrowing of the pharyngeal airway leads to increased velocity of flow and subsequently to a further reduction in intraluminal pressure, further pharyngeal narrowing.…”

Section: Discussionmentioning

confidence: 97%

“…In contrast, mandibular setback surgery is known to cause a narrowing of pharyngeal airway 2,[7][8][9][10][11][12]17,19 . Previous studies have shown changes in the positions of the tongue and the hyoid bone and consequent narrowing of the PAS after orthognathic surgical procedures in a pattern closely resembling that seen in sleep apnea subjects [9][10][11][12]17,19 .…”

Section: Discussionmentioning

confidence: 99%

“…Some studies have also shown changes in the position of the tongue and hyoid bone and consequent narrowing of the pharyngeal airway space 2,[6][7][8][9][10][11][12] . PAS narrowing has been implicated in the development of obstructive sleep apnea [13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

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A comparative CT evaluation of pharyngeal airway changes in class III patients receiving bimaxillary surgery or mandibular setback surgery

Degerliyurt

Ueki

Hashiba

et al. 2008

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, an

116

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Purpose: The purpose of this study was to compare the morphologic changes of the upper airway space in Class III patients underwent mandibuler set back or bimaxillary surgery (maxillary advancement and mandibular setback) by computed tomography at 2 levels: soft palate and base of tongue Materials and Methods:The sample is consisted of 47 patients in 2 groups who had been diagnosed with Class III skeletal deformities and had been treated by mandibular setback or bimaxillary surgery (maxillary advancement and mandibular setback).Anteroposterior, lateral, cross sectional area dimensions of the airway at the level of soft palate and base of tongue was measured pre-and postoperatively on computed tomography images.Results: However, anteroposterior dimensions of the airway decreased in both groups (p<.0001), the reduction was significantly less in cases treated with bimaxillary surgery (p<.05). In mandibular setback surgery group, the cross sectional area of the airway decreased significantly (p<.001) Although, the cross sectional area of the airway decrease in bimaxillary surgery group, the reduction was not statistically significant (p>.05).Conclusions: This study suggested that bimaxillary surgery could prevent narrowing of the upper airway in the correction of Class III deformities rather than mandibular setback surgery .

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

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A comparative CT evaluation of pharyngeal airway changes in class III patients receiving bimaxillary surgery or mandibular setback surgery

Degerliyurt

Ueki

Hashiba

et al. 2008

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, an

116

View full text Add to dashboard Cite

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“…Many studies on mandibular setback surgery for skeletal class III malocclusion have found that the positions of the hyoid bone and the tongue are changed [1]. The position of the hyoid bone after surgery can reflect stretching of the suprahyoid musculature, which plays an important role in maintaining the oropharyngeal airway.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have investigated the effect of orthognathic surgery on the pharyngeal airway space in class III skeletal deformities [2][3][4]. Some studies found that with time and physiologic adaptation of the soft tissues, the airway was restored to its original condition [1,[4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Orthognathic Surgery on the Posterior Airway Space in Patients Affected by Skeletal Class III Malocclusion

Santagata

Tozzi

Lamart

et al. 2014

J. Maxillofac. Oral Surg.

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Introduction Dentofacial deformity refers to deviations from normal facial proportions and dental relationships that are severe enough to be handicapping. These anomalies involve many aspects of patient's life and are sometimes also associated with a reduction of pharyngeal air space. Through orthognathic surgery it is possible to treat dentofacial deformities: this kind of surgery has several effects on skeletal structures and it has changes, as it is demonstrated by many studies, also on the upper airways. The orthognathic surgeries commonly used to correct this deformity are the mandibular setback and the maxillary advancement procedures. This study aims to evaluate the effects of maxillary and mandibular surgery on pharyngeal airway dimensions in skeletal class III malocclusions. Materials and methods This study considers 76 patients, treated between 2007 and 2013 by maxillary advancement (11 patients), maxillary advancement and mandibular setback (39 patients), maxillary advancement, mandibular setback and genioplasty reduction (26 patients). Cranial latero-lateral radiography was used to compare oropharyngeal airway morphologies before and 1 year after surgery. Conclusion The surgeon should consider bimaxillary surgery rather than mandibular setback surgery to correct a class III deformity to prevent the development of obstructive sleep apnea syndrome; in fact, bimaxillary surgery might have less effect on reduction of the pharyngeal airway than mandibular setback surgery only.

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Orthognathic Surgical Considerations for Obstructive Sleep Apnea

Kim

Movahed

2021

Management of Obstructive Sleep Apnea

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Alterations of hyoid bone position and pharyngeal depth and their relationship after surgical correction of mandibular prognathism

Cited by 113 publications

References 13 publications

A comparative CT evaluation of pharyngeal airway changes in class III patients receiving bimaxillary surgery or mandibular setback surgery

A comparative CT evaluation of pharyngeal airway changes in class III patients receiving bimaxillary surgery or mandibular setback surgery

Effect of Orthognathic Surgery on the Posterior Airway Space in Patients Affected by Skeletal Class III Malocclusion

Orthognathic Surgical Considerations for Obstructive Sleep Apnea

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