Airway cephalometric changes following mandibular setback surgery: A review
Background and Aim: Mandibular setback surgery is one of the common treatments in patients with mandibular prognathism. In this surgery, the mandible is placed backward from its original position, and as a result, the soft tissue, tongue, and hyoid bone are slightly displaced, all of which can af...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Tehran University of Medical Sciences
2021-02-01
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| Series: | Journal of Craniomaxillofacial Research |
| Subjects: | |
| Online Access: | https://jcr.tums.ac.ir/index.php/jcr/article/view/358 |
| Summary: | Background and Aim: Mandibular setback surgery is one of the common treatments in
patients with mandibular prognathism. In this surgery, the mandible is placed backward from its
original position, and as a result, the soft tissue, tongue, and hyoid bone are slightly displaced, all
of which can affect the dimensions of the airway. Given that these changes in the dimensions of
the airway can lead to obstructive sleep apnea, it is important to examine these changes and their
stability. In this regard, cephalometric radiography can be used, which haslowcost and dose in
comparison to 3D radiographs, to examine changes in airway dimensions. The aim of this study
was to evaluate the short-term and long-term changes in airway dimensions following mandibular
steback surgery with the help of cephalometric radiography.
Materials and Methods: The study was conducted by review method. Using the keywords
‘orthognathic surgery,’ ‘mandibular setback,’ ‘Malocclusion angle class III,’ ‘prognathism,’ ‘airway,’
‘posterior airway space,’ ‘PAS,’ ‘pharyngeal space, ‘hypopharynx, a review of articles in PubMed and
Embase databases, Google Scholar, and Cochrane databases was performed. The range of article
searches was from 2000 to 2020.
Conclusion: The results of studies showed that in the first 6 months after surgery, the dimensions
of the airway decrease, but over time, due to the adaptation of the surrounding tissues and
relapse after surgery, there is an improvement in the dimensions of the airway; Also, the study of
index-related breathing disorders during sleep disorders during sleep showed that this surgery does
not necessarily lead to obstructive sleep apnea.
Keywords: Orthognathic surgery; Mandibular setback; Malocclusion angle class III; Prognathism;
Airway; Posterior airway space; PAS; Pharyngeal space; Hypopharynx. |
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| ISSN: | 2345-5489 2345-6213 |