Effect of Mandibular Setback Surgery on Tongue Length and Height and Its Correlation with Upper Airway Dimensions

2020 ◽  
Author(s):  
N. K. Sahoo ◽  
Shiv Shankar Agarwal ◽  
Sanjeev Datana ◽  
S. K. Bhandari
Keyword(s):  
Upper Airway ◽  
Mandibular Setback ◽  
Mandibular Setback Surgery ◽  
Tongue Length ◽  
Airway Dimensions

Effects of mandibular setback surgery on upper airway dimensions and their influence on obstructive sleep apnoea – A systematic review

2015 ◽  
Vol 43 (2) ◽  
pp. 248-253 ◽  
Author(s):  
Laura Fernández-Ferrer ◽  
José María Montiel-Company ◽  
Teresa Pinho ◽  
José Manuel Almerich-Silla ◽  
Carlos Bellot-Arcís
Keyword(s):  
Systematic Review ◽  
Obstructive Sleep Apnoea ◽  
Upper Airway ◽  
Sleep Apnoea ◽  
Mandibular Setback ◽  
Obstructive Sleep ◽  
Mandibular Setback Surgery ◽  
Airway Dimensions

scholarly journals Review the Impact of Mandibular Setback Surgery for the Correction of Class III Malocclusion on the Upper Airway Space

2021 ◽  
Vol 9 (F) ◽  
pp. 644-649
Author(s):  
Dareen Aljehani
Keyword(s):  
Upper Airway ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Eligibility Criteria ◽  
Pharyngeal Airway ◽  
Mandibular Setback ◽  
Obstructive Sleep ◽  
Mandibular Setback Surgery ◽  
The Impact

AIM: This study aimed to review the scientific evidence related to the effect of mandibular setback surgery for the correction of Class III malocclusion on the changes in volume and anatomical structures’ positions of the upper airway within at least 1 year follow-up. METHODS: An electronic research was conducted on PubMed, Google scholar, and Elsevier up to April 20, 2021, the inclusion criteria were prospective or retrospective studies aiming to compare the changes in upper airway space following isolated mandibular setback through at least 1 year of follow-up. RESULTS: A total of 84 studies were retrieved, only 12 studies met the eligibility criteria. Their methods of measurement were using lateral cephalometry, CT, or Cone-beam computed tomography. Most of them showed narrowing in the Pharyngeal airway space, with some variability within the follow-up periods. Impact on the possibility of obstructive sleep apnea (OSA) was discussed in most of the included studies. CONCLUSION: Narrowing of upper airway volume is associated with isolated mandibular setback surgeries within 1 year of follow-up. However, OSA was not necessarily a consequence. Any predisposing factors for OSA should be considered before isolated mandibular setback surgery.

scholarly journals Airway cephalometric change following mandibular setback surgery: a review article

2021 ◽  
Author(s):  
AmirHossein Mirhashemi ◽  
Rashin Bahrami ◽  
Mahdi Niknami
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Original Position ◽  
Class Iii ◽  
Mandibular Setback ◽  
Obstructive Sleep ◽  
The Common ◽  
Mandibular Setback Surgery ◽  
Airway Dimensions

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. 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 Cochranedatabases 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.

scholarly journals Comparison of Pharyngeal Airway between Mandibular Setback Surgery Patients (Skeletal Class III) and Nonsurgery Patients (Skeletal Classes I and II)

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Jung-Hsuan Cheng ◽  
Chun-Ming Chen ◽  
Ping-Ho Chen ◽  
Szu-Ting Chou ◽  
Chin-Yun Pan ◽  
...  
Keyword(s):  
Hyoid Bone ◽  
Class Ii ◽  
Class I ◽  
Class Iii ◽  
Pharyngeal Wall ◽  
Skeletal Class ◽  
Pharyngeal Airway ◽  
Mandibular Setback ◽  
Mandibular Setback Surgery ◽  
Airway Dimensions

Purpose. We investigated the pharyngeal airway dimensions and their correlations in patients who underwent mandibular setback surgery versus those who did not. Materials and Methods. One hundred and sixty cephalometric radiographs (120 patients) were obtained from patients with three skeletal malocclusion classifications: Class I and Class II in the nonsurgery group and Class III in the surgery group (preoperative and postoperative cephalograms). The following dimensions were measured: nasopharyngeal airway (NOP), uvulopharyngeal airway (UOP), shortest distance from the posterior tongue to the pharyngeal wall (TOP), and distance from the epiglottis to the pharyngeal wall (EOP). Paired t test, one-way analysis of variance, and Pearson correlation coefficients were used for statistical analysis. Results. Preoperatively, UOP and TOP of skeletal Class III patients (15.2 mm and 16.6 mm) were significantly larger than those of skeletal Class II (11.5 mm and 12 mm) and Class II (12.3 mm and 12.9 mm) patients, respectively. No differences were observed in EOP between the three skeletal patterns. The hyoid bone of Class III patients was significantly anterior to that of Class I/II patients. Furthermore, UOP had a moderate negative correlation with soft palate length. Postoperatively, no significant difference (UOP, TOP, EOP, soft palate width, and hyoid bone) was found between the skeletal classes. Conclusion. Preoperatively, UOP and TOP of skeletal Class III patients were significantly wider than those of skeletal Class I/II patients. Pre- and postoperatively, EOP did not exhibit significant differences among the three skeletal classifications. No differences were found in all postoperative pharyngeal airway dimensions between Class III patients and nonsurgery patients (Class I and Class II).

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