Does the Pharyngeal Airway Recover After Sagittal Split Ramus Osteotomy for Mandibular Prognathism?

Jeon, Jae Yun; Kim, Tae Sun; Kim, Sang Yoon; Park, Chang Joo; Hwang, Kyung‐Gyun

doi:10.1016/j.joms.2015.05.028

Cited by 8 publications

(17 citation statements)

References 25 publications

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“…All the studies lacked long‐term follow‐up. Partial reversion of the hyoid bone position and partial re‐establishment of airway dimensions twelve months after posterior surgical setback of the mandible has been reported . Whether the same effect exists in orthodontic extraction cases is still unknown.…”

Section: Discussionmentioning

confidence: 99%

Effects of bicuspid extractions and incisor retraction on upper airway of Asian adults and late adolescents: A systematic review

Song

Yap

2019

J of Oral Rehabilitation

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ObjectivesThis systematic review aimed to assess the effects of bicuspid extractions and incisor retraction on airway dimension, hyoid position and breathing of adults and late adolescents.MethodsThe review was conducted according to PRISMA guidelines. Eight databases including PubMed, EMBASE, Web of Science and Scopus were searched to August 2018. Minimum age of participants was 16 years. The intervention was dual‐arch bicuspid extractions with incisor retraction. Outcomes were airway dimension, hyoid position and breathing assessment.ResultsAll nine publications meeting inclusion criteria were from Asia. They were divided into three Asian subregions. All East Asian lateral cephalometric studies reported anteroposterior airway narrowing at the oropharynx and sometimes the hypopharynx. However, the narrowing was small, comparable to measurement errors, and highly variable. Two out of three East Asian computed tomography (CT) studies described reductions in airway dimensions. The single functional breathing study showed increased simulated flow resistance after incisor retraction in East Asians. South Asian studies had mixed findings, with some reporting significant airway narrowing. The single study from West Asia found no significant airway or hyoid changes.ConclusionsAirway response to bicuspid extractions and incisor retraction varied substantially when assessed with cephalometry. CT measurements present larger effect sizes and smaller variations, providing stronger evidence of airway narrowing. Orthodontic extractions for incisor retraction may be more frequently indicated in Asia, and East Asians seem particularly susceptible to airway narrowing and postero‐inferior hyoid movement with incisor retraction. Better designed CT studies are needed for confirmation due to small effect size and large variability.

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Section: Discussionmentioning

confidence: 99%

Effects of bicuspid extractions and incisor retraction on upper airway of Asian adults and late adolescents: A systematic review

Song

Yap

2019

J of Oral Rehabilitation

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“…Postural adaptation probably plays a role here because it has been revealed that the retropharyngeal space increases during cephalic extension and decreases during cephalic flexion 33 .…”

Section: Volumetric Modifications Of the Pharynx After Receding Mandimentioning

confidence: 92%

“…Most teams have measured a significantly decreased pharyngeal space after surgery, others do not find any significant modification in this volume, and some others confirm a difference that diminishes over time 23,33 . Receding mandibles could decrease the volume of the hypopharynx without any linear relation 14 .…”

Section: Volumetric Modifications Of the Pharynx After Receding Mandimentioning

confidence: 99%

“…Maxillary advancement is indeed a known cause of nasopharyngeal and velopharyngeal space expansion 20 . On the other hand, there is less pharyngeal space reduction in bimaxillary surgeries than in cases of mandibular rebound isolated by an equivalent overhang 33 .…”

Section: Volumetric Modifications Of the Pharynx After Receding Mandimentioning

confidence: 99%

“…Nonetheless, all the authors conclude, concerning the correction of class-III disorders, that they prefer to perform a simple bimaxillary surgery rather than an isolated mandibular rebound if it is morphologically and clinically possible 17,41,36 . Bimaxillary surgery gives a better esthetic result, affects the airway volumes less, and allows the practitioner to go beyond the adaptability limits of the cervicofacial tissue according to Jeon 33 . Some studies also hint at an improvement in AHI and rhonchopathy after such a bimaxillary osteotomy 20 but none have determined from which overhang it was better to visualize it.…”

Section: Volumetric Modifications Of the Pharynx After Receding Mandimentioning

confidence: 99%

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Relationship between obstructive sleep apnea and orthognathic surgery

Barère¹,

Sapène²,

Mutel³

et al. 2016

J Dentofacial Anom Orthod

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The obstructive sleep apnea (OSA) syndrome has become an important issue in the field of medicine. It has been a relatively discreet pathology until now, but its prevalence as well as an important cardiovascular risk factor, has made it a major public health issue. Orthognathic surgery has now made its mark in both OSA and orthodontic treatment. It seemed appropriate to link these three areas. Objective: Describe the implications and the mutual relations between OSA and maxillofacial osteotomies, despite the fact that scientific literature is not very consensual, and identify the present principles to adapt our therapeutic proposal and our treatment plan. The orthodontic specificities will also be described in this type of patient. Means: A multidisciplinary, descriptive study after reviewing the literature (meta-analysis and baseline studies), enriched by each specialist's remarks. Apneic and orthognathic pathologies are obviously multidisciplinary and providing an overview on treatment seemed necessary.

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